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Merged
piksel merged 4 commits into from
Aug 24, 2018
Merged

Add AES encryption tests #265

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6fcb3c6
Add encryption tests for AES128 and AES256
piksel Aug 24, 2018
04979d4
Add more 7z paths to try for archive verification
piksel Aug 24, 2018
488c23d
Fix 7zip paths and fix stdout timeout
piksel Aug 24, 2018
da847af
Fix missing string interpolation marker
piksel Aug 24, 2018
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144 changes: 144 additions & 0 deletions test/ICSharpCode.SharpZipLib.Tests/Zip/ZipEncryptionHandling.cs
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Original file line number Diff line number Diff line change
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using ICSharpCode.SharpZipLib.Zip;
using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Text;

namespace ICSharpCode.SharpZipLib.Tests.Zip
{
[TestFixture]
public class ZipEncryptionHandling
{
[Test]
[Category("Encryption")]
[Category("Zip")]
public void Aes128Encryption()
{
CreateZipWithEncryptedEntries("foo", 128);
}

[Test]
[Category("Encryption")]
[Category("Zip")]
public void Aes256Encryption()
{
CreateZipWithEncryptedEntries("foo", 256);
}

private static readonly string[] possible7zPaths = new[] {
// Check in PATH
"7z", "7za",

// Check in default install location
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), "7-Zip", "7z.exe"),
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86), "7-Zip", "7z.exe"),
};

public static bool TryGet7zBinPath(out string path7z)
{
var runTimeLimit = TimeSpan.FromSeconds(3);

foreach (var testPath in possible7zPaths)
{
try
{
var p = Process.Start(new ProcessStartInfo(testPath, "i")
{
RedirectStandardOutput = true
});
while (!p.StandardOutput.EndOfStream && (DateTime.Now - p.StartTime) < runTimeLimit)
{
p.StandardOutput.DiscardBufferedData();
}
if (!p.HasExited)
{
p.Close();
Assert.Warn($"Timed out checking for 7z binary in \"{testPath}\"!");
continue;
}

if (p.ExitCode == 0)
{
path7z = testPath;
return true;
}
}
catch (Exception)
{
continue;
}
}
path7z = null;
return false;
}

public void CreateZipWithEncryptedEntries(string password, int keySize)
{
using (var ms = new MemoryStream())
{
using (var zs = new ZipOutputStream(ms))
{
zs.IsStreamOwner = false;
zs.SetLevel(9); // 0-9, 9 being the highest level of compression
zs.Password = password; // optional. Null is the same as not setting. Required if using AES.

ZipEntry zipEntry = new ZipEntry("test");
zipEntry.AESKeySize = keySize;
zipEntry.DateTime = DateTime.Now;

zs.PutNextEntry(zipEntry);

byte[] dummyData = Encoding.UTF8.GetBytes(@"Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Fusce bibendum diam ac nunc rutrum ornare. Maecenas blandit elit ligula, eget suscipit lectus rutrum eu.
Maecenas aliquam, purus mattis pulvinar pharetra, nunc orci maximus justo, sed facilisis massa dui sed lorem.
Vestibulum id iaculis leo. Duis porta ante lorem. Duis condimentum enim nec lorem tristique interdum. Fusce in faucibus libero.");

using (var dummyStream = new MemoryStream(dummyData))
{
dummyStream.CopyTo(zs);
}

zs.CloseEntry();
}

if (TryGet7zBinPath(out string path7z))
{
Console.WriteLine($"Using 7z path: \"{path7z}\"");

ms.Seek(0, SeekOrigin.Begin);

var fileName = Path.GetTempFileName();

try
{

using (var fs = File.OpenWrite(fileName))
{
ms.CopyTo(fs);
}

var p = Process.Start(path7z, $"t -p{password} {fileName}");
if (!p.WaitForExit(2000))
{
Assert.Warn("Timed out verifying zip file!");
}

Assert.AreEqual(0, p.ExitCode, "Archive verification failed");

}
finally
{
File.Delete(fileName);
}
}
else
{
Assert.Warn("Skipping file verification since 7za is not in path");
}
}

}
}
}