112 lines
3.9 KiB
C#
112 lines
3.9 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.Data.Backup;
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public class ZipWriteOperator : IDataWriteOperator
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{
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private readonly TarOutputStream _tarOutputStream;
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private readonly TempStream _tempStream;
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public ZipWriteOperator(TempStream tempStream, string targetFile)
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{
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var file = new FileStream(targetFile, FileMode.Create);
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var gZipOutputStream = new GZipOutputStream(file);
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_tarOutputStream = new TarOutputStream(gZipOutputStream, Encoding.UTF8);
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_tempStream = tempStream;
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}
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public void WriteEntry(string key, Stream stream)
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{
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using (var buffered = _tempStream.GetBuffered(stream))
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{
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var entry = TarEntry.CreateTarEntry(key);
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entry.Size = buffered.Length;
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_tarOutputStream.PutNextEntry(entry);
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buffered.Position = 0;
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buffered.CopyTo(_tarOutputStream);
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_tarOutputStream.CloseEntry();
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}
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}
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public void Dispose()
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{
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_tarOutputStream.Close();
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_tarOutputStream.Dispose();
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}
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}
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public class ZipReadOperator : IDataReadOperator
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{
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private readonly string _tmpDir;
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public ZipReadOperator(string targetFile)
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{
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_tmpDir = Path.Combine(Path.GetDirectoryName(targetFile), Path.GetFileNameWithoutExtension(targetFile).Replace('>', '_').Replace(':', '_').Replace('?', '_'));
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using (var stream = File.OpenRead(targetFile))
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using (var reader = new GZipInputStream(stream))
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using (var tarOutputStream = TarArchive.CreateInputTarArchive(reader, Encoding.UTF8))
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{
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tarOutputStream.ExtractContents(_tmpDir);
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}
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File.Delete(targetFile);
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}
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public Stream GetEntry(string key)
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{
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var filePath = Path.Combine(_tmpDir, key);
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return File.Exists(filePath)
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? File.Open(filePath, FileMode.Open, FileAccess.ReadWrite, FileShare.Read)
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: null;
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}
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public IEnumerable<string> GetEntries(string key)
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{
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var path = Path.Combine(_tmpDir, key);
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var files = Directory.EnumerateFiles(path);
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return files;
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}
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public IEnumerable<string> GetDirectories(string key)
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{
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var path = Path.Combine(_tmpDir, key);
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var files = Directory.EnumerateDirectories(path);
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return files;
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}
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public void Dispose()
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{
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if (Directory.Exists(_tmpDir))
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{
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Directory.Delete(_tmpDir, true);
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}
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}
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}
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