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extract GetFileName to separate method and handle invalid characters

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This commit is contained in:
Daniel Svensson
2024-05-23 17:05:32 +02:00
committed by Caelan Sayler
parent 132a466c9a
commit ad46bc07dd
1 changed files with 24 additions and 2 deletions
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26
src/Velopack/UpdateManager.cs
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@@ -1,6 +1,7 @@
using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
@@ -231,7 +232,7 @@ namespace Velopack
var appTempDir = Locator.AppTempDir!;
var appPackageDir = Locator.PackagesDir!;
var completeFile = Path.Combine(appPackageDir, Path.GetFileName(targetRelease.FileName));
var completeFile = Path.Combine(appPackageDir, GetSafeFilename(targetRelease.FileName));
var incompleteFile = completeFile + ".partial";
try {
@@ -260,7 +261,7 @@ namespace Velopack
$"Only full update will be available.");
} else {
using var _1 = Utility.GetTempDirectory(out var deltaStagingDir, appTempDir);
string basePackagePath = Path.Combine(appPackageDir, Path.GetFileName(updates.BaseRelease.FileName));
string basePackagePath = Path.Combine(appPackageDir, GetSafeFilename(updates.BaseRelease.FileName));
if (!File.Exists(basePackagePath))
throw new Exception($"Unable to find base package {basePackagePath} for delta update.");
EasyZip.ExtractZipToDirectory(Log, basePackagePath, deltaStagingDir);
@@ -318,6 +319,27 @@ namespace Velopack
CleanPackagesExcept(completeFile);
}
// Ensures that the file name is safe for writing to disk without escaping the packages folder
static string GetSafeFilename(string fileName)
{
string safeFileName = Path.GetFileName(fileName);
char[] invalidFileNameChars = Path.GetInvalidFileNameChars();
if (safeFileName.IndexOfAny(invalidFileNameChars) != -1 ) {
StringBuilder safeName = new();
foreach(char ch in safeFileName) {
if (Array.IndexOf(invalidFileNameChars, ch) == -1)
safeName.Append(ch);
else
safeName.Append('_');
}
safeFileName = safeName.ToString();
}
return safeFileName;
}
}
/// <summary>