DocSpace-buildtools/common/ASC.Data.Encryption/CryptoStreamWrapper.cs
2020-12-28 16:22:08 +03:00

60 lines
2.2 KiB
C#

/*
*
* (c) Copyright Ascensio System Limited 2010-2020
*
* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
*
* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
*
* You can contact Ascensio System SIA by email at sales@onlyoffice.com
*
* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
*
* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
* relevant author attributions when distributing the software. If the display of the logo in its graphic
* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
* in every copy of the program you distribute.
* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
*
*/
using System.IO;
using System.Security.Cryptography;
namespace ASC.Data.Encryption
{
//https://stackoverflow.com/a/22072068
internal sealed class CryptoStreamWrapper : CryptoStream
{
private readonly Stream underlyingStream;
public CryptoStreamWrapper(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
underlyingStream = stream;
}
protected override void Dispose(bool disposing)
{
try
{
base.Dispose(disposing);
}
catch (CryptographicException)
{
if (disposing)
{
underlyingStream.Dispose();
}
}
}
}
}