public bool TryGetValue(string key, out StringValues value)
{
if (_headers.TryGetValue(key, out value))
{
return(true);
}
ReadableBuffer buffer;
if (_headerSlices.TryGetValue(key, out buffer))
{
value = buffer.GetAsciiString();
_headers[key] = value;
return(true);
}
return(false);
}
public bool TryGetValue(string key, out StringValues value)
{
return(_headers.TryGetValue(key, out value));
}
public void UpdateValidity(IList <FileFragment> list, int index)
{
if (index < 0) //error
{
return;
}
else if (index == 0) //header
{
HeaderDictionary.TryGetValue(File.ReadAllBytes(list[index].Path), out HeaderType);
list[index].Validity = (HeaderType != NetworkGraphicTypes.Other) ? Validity.Valid : Validity.HardInvalid;
list[index].Description = $"File type = {HeaderType} Network Graphics";
return;
}
else //everything else
{
int chunkNumber = ((index - 1) / 4) + 1;
switch (((index - 1) % 4) + 1) //Switch based on chunk type
{
case (1): //length
string lengthPath = list[index].Path;
long lengthLength = new FileInfo(lengthPath).Length;
if (lengthLength != 4)
{
list[index].Validity = (lengthLength < 4) ? Validity.HardInvalid : Validity.Unknown;
list[index].Description = $"Chunk {chunkNumber} Length = <unkown>";
}
else if (lengthLength == 4)
{
int lengthData = BinaryFileInterpreter.ReadFileAs <int>(lengthPath, true);
list[index].Validity =
(lengthData == new FileInfo(list[index + 2].Path).Length)
? Validity.Valid : Validity.HardInvalid;
list[index].Description = $"Chunk {chunkNumber} Length = {lengthData}";
}
break;
case (2): //type
byte[] typeData = File.ReadAllBytes(list[index].Path);
list[index].Validity =
IsValidChunkType(typeData)
? Validity.Valid
: Validity.HardInvalid;
list[index].Description = $"Chunk {chunkNumber} Type = {Encoding.ASCII.GetString(typeData)}"; //HACK
goto case (4);
case (3): //data
string dataPath = list[index].Path;
long dataLength = new FileInfo(dataPath).Length;
if (dataLength > int.MaxValue)
{
list[index].Validity = Validity.HardInvalid;
}
else
{
int lengthData = BinaryFileInterpreter.ReadFileAs <int>(list[index - 2].Path, true);
if (FixLength && dataLength != lengthData)
{
File.WriteAllBytes(list[index - 2].Path, ((int)dataLength).GetBytes(true));
list[index - 2].Description = $"Chunk {chunkNumber} Length = {dataLength}";
list[index - 2].Validity = Validity.Valid;
}
list[index].Validity = (FixLength || dataLength == lengthData) ? Validity.Valid : Validity.HardInvalid;
}
list[index].Description = $"Chunk {chunkNumber} Data length = {dataLength}";
goto case (4);
case (4): //crc
//int chunkStart = (((index - 1) / 4) * 4) + 1;
int chunkStart = ((chunkNumber - 1) * 4) + 1; //Using this since this case is goto'd a few times
byte[] correctCRC = CalculateCRCOf(
File.ReadAllBytes(list[chunkStart + 1].Path)
.Concat(File.ReadAllBytes(list[chunkStart + 2].Path))
.ToArray());
byte[] currentCRC = File.ReadAllBytes(list[chunkStart + 3].Path);
if (!correctCRC.SequenceEqual(currentCRC))
{
if (FixCRC)
{
File.WriteAllBytes(list[chunkStart + 3].Path, correctCRC);
}
list[chunkStart + 3].Validity = (FixCRC)
? Validity.Valid
: Validity.HardInvalid;
}
else
{
list[chunkStart + 3].Validity = Validity.Valid;
}
list[chunkStart + 3].Description = $"Chunk {chunkNumber} CRC (Big Endian) = {currentCRC.ConvertTo<uint>(true)}";
break;
}
return;
}
}
