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[PTRun][Program]detect UWP trust level accurately (#14888)

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This commit is contained in:
Jaime Bernardo
2021-12-21 10:21:08 +00:00
committed by GitHub
parent 288e0487a0
commit dc08987a60
1 changed files with 21 additions and 5 deletions
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26
src/modules/launcher/Plugins/Microsoft.Plugin.Program/Programs/UWPApplication.cs
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@@ -17,6 +17,7 @@ using System.Windows;
using System.Windows.Input; using System.Windows.Input;
using System.Windows.Media; using System.Windows.Media;
using System.Windows.Media.Imaging; using System.Windows.Media.Imaging;
using System.Xml;
using ManagedCommon; using ManagedCommon;
using Microsoft.Plugin.Program.Logger; using Microsoft.Plugin.Program.Logger;
using Microsoft.Plugin.Program.Win32; using Microsoft.Plugin.Program.Win32;
@@ -268,12 +269,27 @@ namespace Microsoft.Plugin.Program.Programs
var manifest = Package.Location + "\\AppxManifest.xml"; var manifest = Package.Location + "\\AppxManifest.xml";
if (File.Exists(manifest)) if (File.Exists(manifest))
{ {
var file = File.ReadAllText(manifest); try
// Using OrdinalIgnoreCase since this is used internally
if (file.Contains("TrustLevel=\"mediumIL\"", StringComparison.OrdinalIgnoreCase))
{ {
return true; // Check the manifest to verify if the Trust Level for the application is "mediumIL"
var file = File.ReadAllText(manifest);
var xmlDoc = new XmlDocument();
xmlDoc.LoadXml(file);
var xmlRoot = xmlDoc.DocumentElement;
var namespaceManager = new XmlNamespaceManager(xmlDoc.NameTable);
namespaceManager.AddNamespace("uap10", "http://schemas.microsoft.com/appx/manifest/uap/windows10/10");
var trustLevelNode = xmlRoot.SelectSingleNode("//*[local-name()='Application' and @uap10:TrustLevel]", namespaceManager); // According to https://docs.microsoft.com/en-us/windows/apps/desktop/modernize/grant-identity-to-nonpackaged-apps#create-a-package-manifest-for-the-sparse-package and https://docs.microsoft.com/en-us/uwp/schemas/appxpackage/uapmanifestschema/element-application#attributes
if (trustLevelNode?.Attributes["uap10:TrustLevel"]?.Value == "mediumIL")
{
return true;
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception e)
#pragma warning restore CA1031 // Do not catch general exception types
{
ProgramLogger.Exception($"Unable to parse manifest file for {DisplayName}", e, MethodBase.GetCurrentMethod().DeclaringType, manifest);
} }
} }
} }