static int CommandSha256([NotNull] Sha256Options sha256Options, [NotNull] ISnapFilesystem snapFilesystem, [NotNull] ISnapCryptoProvider snapCryptoProvider, [NotNull] ILog logger)
{
if (sha256Options == null)
{
throw new ArgumentNullException(nameof(sha256Options));
}
if (snapFilesystem == null)
{
throw new ArgumentNullException(nameof(snapFilesystem));
}
if (snapCryptoProvider == null)
{
throw new ArgumentNullException(nameof(snapCryptoProvider));
}
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
if (sha256Options.Filename == null || !snapFilesystem.FileExists(sha256Options.Filename))
{
logger.Error($"File not found: {sha256Options.Filename}");
return(1);
}
try
{
using var fileStream = new FileStream(sha256Options.Filename, FileMode.Open, FileAccess.Read);
logger.Info(snapCryptoProvider.Sha256(fileStream));
return(0);
}
catch (Exception e)
{
logger.ErrorException($"Error computing SHA256-checksum for filename: {sha256Options.Filename}", e);
return(1);
}
}
public void TestSha256_Empty_StringBuilder()
{
Assert.Equal(SnapConstants.Sha256EmptyFileChecksum, _snapCryptoProvider.Sha256(new StringBuilder(), Encoding.UTF8));
}