public static ToffeeInternalPacketReadResult Read(ToffeeParticipant receiver, byte[] packet)
{
try
{
// Iterate through the packet
ToffeePacketIterator iterator = new ToffeePacketIterator(receiver, packet);
// Get the header, data, and CRC
InternalPacketHeader header = iterator.ReadStruct <InternalPacketHeader>();
byte[] packetData = iterator.ReadBytes(header.Length);
uint sentCrc = iterator.ReadUInt32();
// Is the CRC correct?
uint calculatedCrc = CRC.CalculateCRC32(packetData);
if (sentCrc != calculatedCrc)
{
return(new ToffeeInternalPacketReadResult(false, new InternalPacketHeader(), null));
}
// Is this packet compressed?
if (header.Compressed)
{
packetData = CompressionService.Decompress(packetData);
}
// Return the read result
return(new ToffeeInternalPacketReadResult(true, header, packetData));
}
catch
{
return(new ToffeeInternalPacketReadResult(false, new InternalPacketHeader(), null));
}
}
static void Main(string[] args)
{
DecompressFileApp app = new DecompressFileApp();
Logger logger = app.Logger;
ExitCode exitCode = ExitCode.None;
try
{
logger.Info("Application started.");
CultureInfo.CurrentCulture = CultureInfo.CreateSpecificCulture("en-GB");
Options options = new Options();
Parser.Default.ParseArgumentsStrict(args, options, CommandLineOptions.ArgumentParsingFailed);
using (ICompressionService zipFileService = new CompressionService())
{
zipFileService.Decompress(options.InputFileName, options.OutputPath);
exitCode = ExitCode.Success;
}
}
catch (Exception ex)
{
exitCode = new ExceptionHandlingService(ex).GetExitCode();
}
finally
{
logger.Info(CultureInfo.InvariantCulture, "Application exited with code: {0}", (int)exitCode);
Environment.Exit((int)exitCode);
}
}
public void CompressAndDecompressToSameResultTest(byte[] data)
{
var compressionService = new CompressionService();
var compressedData = compressionService.Compress(data);
var decompressedData = compressionService.Decompress(compressedData);
Assert.True(data.SequenceEqual(decompressedData));
}
public static ToffeeClientPacketReadResult Read(ToffeeParticipant receiver, byte[] packet)
{
try
{
// Is this packet encrypted?
bool encrypted = packet[0] == 0x01;
if (encrypted)
{
// Is this client setup to use encryption?
if (receiver.UseEncryption)
{
packet = receiver.Encryption.Decrypt(packet.Skip(1).ToArray());
}
}
else
{
packet = packet.Skip(1).ToArray();
}
// Iterate through the packet
ToffeePacketIterator iterator = new ToffeePacketIterator(receiver, packet);
// Get the header, data, and CRC
ClientPacketHeader header = iterator.ReadStruct <ClientPacketHeader>();
byte[] packetData = iterator.ReadBytes(header.Length);
uint sentCrc = iterator.ReadUInt32();
// Is the CRC correct?
uint calculatedCrc = CRC.CalculateCRC32(packetData);
if (sentCrc != calculatedCrc)
{
return(new ToffeeClientPacketReadResult(false, encrypted, new ClientPacketHeader(), null));
}
// Is this packet compressed?
if (header.Compressed)
{
packetData = CompressionService.Decompress(packetData);
}
// Return the read result
return(new ToffeeClientPacketReadResult(true, encrypted, header, packetData));
}
catch
{
return(new ToffeeClientPacketReadResult(false, false, new ClientPacketHeader(), null));
}
}
public async Task <byte[]> LoadFileAsync(string name)
{
_connection.Open();
var fileContent = await _connection.ExecuteScalarAsync <byte[]>(
"SELECT Content " +
"FROM FileInfo " +
"WHERE Name = @Name",
param : new { Name = name });
_connection.Close();
var decompressedFileContent = _compressionService.Decompress(fileContent);
return(decompressedFileContent);
}