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* [REFACTOR] Remove DotNetZip, replace with System.IO.Compression * Add support for Extensions folder and beautify code according to sonarqube * Use SharpZipLib and implement AES 256 encryption * Throw error on invalid zip entry name
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| // ------------------------------------------------------------------------------------------------------------------------------- | ||
| // <copyright file="SharpZipLibHelper.cs" company="Starion Group S.A."> | ||
| // Copyright (c) 2015-2024 Starion Group S.A. | ||
| // | ||
| // Author: Sam Gerené, Alex Vorobiev, Alexander van Delft, Nathanael Smiechowski, Antoine Théate, Omar Elebiary, Jaime Bernar | ||
| // | ||
| // This file is part of CDP4-COMET SDK Community Edition | ||
| // | ||
| // The CDP4-COMET SDK Community Edition is free software; you can redistribute it and/or | ||
| // modify it under the terms of the GNU Lesser General Public | ||
| // License as published by the Free Software Foundation; either | ||
| // version 3 of the License, or (at your option) any later version. | ||
| // | ||
| // The CDP4-COMET SDK Community Edition is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| // Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with this program; if not, write to the Free Software Foundation, | ||
| // Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | ||
| // </copyright> | ||
| // ------------------------------------------------------------------------------------------------------------------------------- | ||
|
|
||
| namespace CDP4Common.Encryption | ||
| { | ||
| using System.IO; | ||
|
|
||
| using ICSharpCode.SharpZipLib.Zip; | ||
|
|
||
| /// <summary> | ||
| /// A class containing Helper Methods for working with SharpZipLib and creating AES 256 encrypted zip files | ||
| /// </summary> | ||
| public static class SharpZipLibUtils | ||
| { | ||
| /// <summary> | ||
| /// Create a <see cref="ZipOutputStream"/> to create a AES 256 encrypted zip file | ||
| /// </summary> | ||
| /// <param name="inputStream">The input <see cref="Stream"/> to write to</param> | ||
| /// <param name="password">The password to be used to protect the data</param> | ||
| /// <returns>The created <see cref="ZipOutputStream"/></returns> | ||
| public static ZipOutputStream CreateZipOutputStream(Stream inputStream, string password) | ||
| { | ||
| var zipStream = new ZipOutputStream(inputStream); | ||
| zipStream.Password = password; | ||
| zipStream.IsStreamOwner = true; // underlying streams will be forcibly closed | ||
|
|
||
| return zipStream; | ||
| } | ||
|
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| /// <summary> | ||
| /// Add a <see cref="ZipEntry"/> and add it to a <see cref="ZipOutputStream"/> | ||
| /// </summary> | ||
| /// <param name="zipOutputStream">The <see cref="ZipOutputStream"/></param> | ||
| /// <param name="stream">The input <see cref="Stream"/> from which to create the <see cref="ZipEntry"/></param> | ||
| /// <param name="name">The name of the entry, including (sub)folder information</param> | ||
| public static void AddEntryFromStream(ZipOutputStream zipOutputStream, Stream stream, string name) | ||
| { | ||
| if (stream.Length == 0) | ||
| { | ||
| return; | ||
| } | ||
|
|
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| var entry = new ZipEntry(name) | ||
| { | ||
| AESKeySize = 256, // Set AES encryption to 256 bits for each individual entry | ||
| }; | ||
|
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| zipOutputStream.PutNextEntry(entry); | ||
| stream.Flush(); | ||
| stream.Position = 0; | ||
| stream.CopyTo(zipOutputStream); | ||
| zipOutputStream.CloseEntry(); | ||
| } | ||
|
|
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| /// <summary> | ||
| /// Add a file as a <see cref="ZipEntry"/> to an existing <see cref="ZipOutputStream"/> | ||
| /// </summary> | ||
| /// <param name="zipOutputStream">The <see cref="ZipOutputStream"/></param> | ||
| /// <param name="extraFile">The location of the file to add</param> | ||
| /// <param name="entryLocation">The location (fullname) of the file to create in the <see cref="ZipOutputStream"/>, including (sub)folder information</param> | ||
| public static void AddEntryFromFile(ZipOutputStream zipOutputStream, string extraFile, string entryLocation) | ||
| { | ||
| var entry = new ZipEntry(entryLocation) | ||
| { | ||
| AESKeySize = 256, // Set AES encryption to 256 bits | ||
| }; | ||
|
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| zipOutputStream.PutNextEntry(entry); | ||
|
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| using (var fileStream = File.OpenRead(extraFile)) | ||
| { | ||
| fileStream.CopyTo(zipOutputStream); | ||
| } | ||
|
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| zipOutputStream.CloseEntry(); | ||
| } | ||
| } | ||
| } |
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