private bool MatchesPart(YEncHeader header)
{
if (header.Part.HasValue)
{
return(Part.HasValue && header.Part.Value == Part.Value);
}
return(!Part.HasValue);
}
public void Validate(YEncHeader header, MemoryBlockStream decodedPartStream)
{
if (!MatchesPart(header))
{
throw new YEncException($"Part mismatch. Expected {header.Part}, but got {Part}.");
}
if (Size != decodedPartStream.Length)
{
throw new YEncException($"Size mismatch. Expected {Size}, but got {decodedPartStream.Length}.");
}
var crc32 = Crc33 ?? PartCrc32;
if (crc32.HasValue)
{
var calculatedCrc32 = Crc32.CalculateChecksum(decodedPartStream.ToArray());
if (calculatedCrc32 != crc32.Value)
{
throw new YEncException($"Checksum mismatch. Expected {crc32.Value}, but got {calculatedCrc32}.");
}
}
}