private void UnpackRegularFile(Pack1Meta.FileEntry file, Action <double> onProgress, CancellationToken cancellationToken, string destinationDirPath = null)
{
string destPath = Path.Combine(destinationDirPath == null ? _destinationDirPath : destinationDirPath, file.Name + _suffix);
DebugLogger.LogFormat("Unpacking regular file {0} to {1}", file, destPath);
if (file.Size == null)
{
throw new NullReferenceException("File size cannot be null for regular file.");
}
if (file.Offset == null)
{
throw new NullReferenceException("File offset cannot be null for regular file.");
}
Files.CreateParents(destPath);
var rijn = new RijndaelManaged
{
Mode = CipherMode.CBC,
Padding = PaddingMode.None,
KeySize = 256
};
var aesAlg = new AesCryptoServiceProvider
{
IV = _iv,
Key = _key
};
ICryptoTransform decryptor = aesAlg.CreateDecryptor(
aesAlg.Key,
aesAlg.IV);
DecompressorCreator decompressorCreator = ResolveDecompressor(_metaData);
using (var fs = new FileStream(_packagePath, FileMode.Open))
{
fs.Seek(file.Offset.Value - _range.Start, SeekOrigin.Begin);
using (var limitedStream = new BufferedStream(new LimitedStream(fs, file.Size.Value), 2 * 1024 * 1024))
{
//using (var bufferedLimitedStream = new ThreadBufferedStream(limitedStream, 8 * 1024 * 1024))
{
using (var target = new FileStream(destPath, FileMode.Create))
{
ExtractFileFromStream(limitedStream, target, file.Size.Value, decryptor, decompressorCreator, onProgress, cancellationToken);
}
}
if (Platform.IsPosix())
{
Chmod.SetMode(file.Mode.Substring(3), destPath);
}
}
}
DebugLogger.Log("File " + file.Name + " unpacked successfully!");
}
private void ExtractFileFromStream(
Stream sourceStream,
Stream targetStream,
long fileSize,
ICryptoTransform decryptor,
DecompressorCreator createDecompressor,
Action <double> onProgress,
CancellationToken cancellationToken)
{
using (var cryptoStream = new CryptoStream(sourceStream, decryptor, CryptoStreamMode.Read))
{
using (var bufferedCryptoStream = new BufferedStream(new ThreadBufferedStream(cryptoStream, 2 * 1024 * 1024), 2 * 1024 * 1024))
{
//using (var wrapperStream = new GZipReadWrapperStream(bufferedCryptoStream))
{
using (Stream decompressionStream = createDecompressor(bufferedCryptoStream))
{
using (var bufferedDecompressionStream = new ThreadBufferedStream(decompressionStream, 4 * 1024 * 1024))
{
try
{
const int bufferSize = 2 * 1024 * 1024;
var buffer = new byte[bufferSize];
int count;
while ((count = bufferedDecompressionStream.Read(buffer, 0, buffer.Length)) > 0)
{
cancellationToken.ThrowIfCancellationRequested();
targetStream.Write(buffer, 0, count);
long bytesProcessed = sourceStream.Position;
onProgress(bytesProcessed / (double)fileSize);
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception e)
{
DebugLogger.LogException(e);
PatcherLogManager logManager = PatcherLogManager.Instance;
PatcherLogSentryRegistry sentryRegistry = logManager.SentryRegistry;
RavenClient ravenClient = sentryRegistry.RavenClient;
var sentryEvent = new SentryEvent(e);
PatcherLogSentryRegistry.AddDataToSentryEvent(sentryEvent,
logManager.Storage.Guid.ToString());
ravenClient.Capture(sentryEvent);
throw;
}
}
}
}
}
}
}
