public static EncryptedStream Create(Stream originalStream, string sharedSecret, string salt)
{
var instance = new EncryptedStream();
TaskHelper.WaitSafeSync(() => instance.InitAsync(originalStream, sharedSecret, salt));
return(instance);
}
public async static Task <EncryptedStream> CreateAsync(Stream originalStream, string sharedSecret, string salt)
{
var instance = new EncryptedStream();
await instance.InitAsync(originalStream, sharedSecret, salt)
.IgnoreContext();
return(instance);
}
/// <summary>
/// Save a file from various sources to the remote storage
/// </summary>
/// <param name="command">Options for the saving the file</param>
/// <returns>name of file as stored in the remote storage</returns>
public async Task <string> SaveAsync(StorageCommand command)
{
var sourceProvider = command.SourceProvider;
Stream sourceStream = null;
try
{
sourceStream = await sourceProvider.GetStreamAsync().IgnoreContext();
if (String.IsNullOrEmpty(command.FileName))
{
command.FileName = String.Format("{0}{1}", Guid.NewGuid().ToShortGuid(), command.Extension);
}
else
{
if (!String.IsNullOrEmpty(command.Extension) && String.IsNullOrEmpty(Path.GetExtension(command.FileName)))
{
command.FileName = $"{command.FileName}{command.Extension}";
}
}
if (String.IsNullOrEmpty(command.ContentType))
{
command.ContentType = GlobalConfiguration.Instance.GetMimeMapping().GetMimeType(command.FileName);
}
if (!String.IsNullOrEmpty(command.Folder))
{
command.FileName = "{0}/{1}".FormatWith(command.Folder, command.FileName);
}
var keys = command.EncryptionOptions?.GetKeys(command.FileName);
if (keys != null)
{
using (var streamToSave = await EncryptedStream.CreateAsync(sourceStream, keys.Secret, keys.Salt)
.IgnoreContext())
{
await _storage.SaveAsync(streamToSave, command.FileName, command.ContentType)
.IgnoreContext();
}
}
else
{
await _storage.SaveAsync(sourceStream, command.FileName, command.ContentType)
.IgnoreContext();
}
}
finally
{
if (sourceStream != null && sourceProvider.AutoDispose)
{
sourceStream.Dispose();
}
}
return(command.FileName);
}