private byte[] GetIndexHash()
{
if (this.shouldHashIndex)
{
using (Stream fileStream = new FileStream(this.indexLockPath, FileMode.Open, FileAccess.Read, FileShare.Write))
using (HashingStream hasher = new HashingStream(fileStream))
{
hasher.CopyTo(Stream.Null);
return(hasher.Hash);
}
}
return(new byte[20]);
}
public virtual string WriteLooseObject(Stream responseStream, string sha, bool overwriteExistingObject, byte[] bufToCopyWith)
{
try
{
LooseObjectToWrite toWrite = this.GetLooseObjectDestination(sha);
if (this.checkData)
{
try
{
using (Stream fileStream = this.OpenTempLooseObjectStream(toWrite.TempFile))
using (SideChannelStream sideChannel = new SideChannelStream(from: responseStream, to: fileStream))
using (InflaterInputStream inflate = new InflaterInputStream(sideChannel))
using (HashingStream hashing = new HashingStream(inflate))
using (NoOpStream devNull = new NoOpStream())
{
hashing.CopyTo(devNull);
string actualSha = SHA1Util.HexStringFromBytes(hashing.Hash);
if (!sha.Equals(actualSha, StringComparison.OrdinalIgnoreCase))
{
string message = $"Requested object with hash {sha} but received object with hash {actualSha}.";
message += $"\nFind the incorrect data at '{toWrite.TempFile}'";
this.Tracer.RelatedError(message);
throw new SecurityException(message);
}
}
}
catch (SharpZipBaseException)
{
string message = $"Requested object with hash {sha} but received data that failed decompression.";
message += $"\nFind the incorrect data at '{toWrite.TempFile}'";
this.Tracer.RelatedError(message);
throw new RetryableException(message);
}
}
else
{
using (Stream fileStream = this.OpenTempLooseObjectStream(toWrite.TempFile))
{
StreamUtil.CopyToWithBuffer(responseStream, fileStream, bufToCopyWith);
fileStream.Flush();
}
}
this.FinalizeTempFile(sha, toWrite, overwriteExistingObject);
return(toWrite.ActualFile);
}
catch (IOException e)
{
throw new RetryableException("IOException while writing loose object. See inner exception for details.", e);
}
catch (UnauthorizedAccessException e)
{
throw new RetryableException("UnauthorizedAccessException while writing loose object. See inner exception for details.", e);
}
catch (Win32Exception e)
{
throw new RetryableException("Win32Exception while writing loose object. See inner exception for details.", e);
}
}
