[cmdpal][aot] Make app extension become AOT compatible

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Microsoft.CmdPal.Ext.Apps.csproj

@@ -1,11 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\..\..\Common.Dotnet.CsWinRT.props" />
+	<Import Project="..\..\..\..\Common.Dotnet.AotCompatibility.props" />
   <PropertyGroup>
     <RootNamespace>Microsoft.CmdPal.Ext.Apps</RootNamespace>
     <Nullable>enable</Nullable>
     <OutputPath>$(SolutionDir)$(Platform)\$(Configuration)\WinUI3Apps\CmdPal</OutputPath>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+	<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <ItemGroup>

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/NativeMethods.txt

@@ -1,7 +1,6 @@
 GetPhysicallyInstalledSystemMemory
 GlobalMemoryStatusEx
 GetSystemInfo
-CoCreateInstance
 SetForegroundWindow
 IsIconic
 RegisterHotKey
@@ -13,7 +12,6 @@ SetFocus
 SetActiveWindow
 MonitorFromWindow
 GetMonitorInfo
-SHCreateStreamOnFileEx
 CoAllowSetForegroundWindow
-SHCreateStreamOnFileEx
-SHLoadIndirectString
+SHLoadIndirectString
+IStream

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/UWP.cs

@@ -6,6 +6,7 @@
 using System.Collections.Generic;
 using System.IO.Abstractions;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Xml.Linq;
 using Microsoft.CmdPal.Ext.Apps.Utils;
 using Windows.Win32;
@@ -65,11 +66,18 @@ public void InitializeAppInfo(string installedLocation)
         const uint noAttribute = 0x80;
 
         var access = (uint)STGM.READ;
-        var hResult = PInvoke.SHCreateStreamOnFileEx(path, access, noAttribute, false, null, out IStream stream);
+        var hResult = Native.SHCreateStreamOnFileEx(path, access, noAttribute, false, IntPtr.Zero, out var streamPtr);
 
         // S_OK
         if (hResult == 0)
         {
+            // create IStream from streamPtr
+            var stream = Marshal.GetTypedObjectForIUnknown(streamPtr, typeof(IStream)) as IStream;
+            if (stream == null)
+            {
+                return;
+            }
+
             Apps = AppxPackageHelper.GetAppsFromManifest(stream).Select(appInManifest => new UWPApplication(appInManifest, this)).Where(a =>
             {
                 var valid =

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/UWPApplication.cs

@@ -197,9 +197,10 @@ internal string ResourceFromPri(string packageFullName, string resourceReference
                 parsedFallback = prefix + "///" + key;
             }
 
-            var outBuffer = new StringBuilder(128);
+            var outBuffer = new char[1024];
+
             var source = $"@{{{packageFullName}? {parsed}}}";
-            var capacity = (uint)outBuffer.Capacity;
+            var capacity = (uint)outBuffer.Length;
             var hResult = SHLoadIndirectString(source, outBuffer, capacity, IntPtr.Zero);
             if (hResult != HRESULT.S_OK)
             {

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/Native.cs

@@ -5,24 +5,28 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.InteropServices;
-using System.Text;
+using System.Runtime.InteropServices.Marshalling;
+using Dia2Lib;
 
 namespace Microsoft.CmdPal.Ext.Apps.Utils;
 
 [SuppressMessage("Interoperability", "CA1401:P/Invokes should not be visible", Justification = "We want plugins to share this NativeMethods class, instead of each one creating its own.")]
-public sealed class Native
+public sealed partial class Native
 {
-    [DllImport("shlwapi.dll", CharSet = CharSet.Unicode)]
-    public static extern int SHLoadIndirectString(string pszSource, StringBuilder pszOutBuf, int cchOutBuf, nint ppvReserved);
+    [LibraryImport("shell32.dll", SetLastError = true, StringMarshalling = StringMarshalling.Utf16)]
+    public static partial int SHCreateItemFromParsingName([MarshalAs(UnmanagedType.LPWStr)] string path, nint pbc, ref Guid riid, [MarshalUsing(typeof(IShellItemMarshallerOut))] out IShellItem? shellItem);
 
-    [DllImport("shell32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
-    public static extern int SHCreateItemFromParsingName([MarshalAs(UnmanagedType.LPWStr)] string path, nint pbc, ref Guid riid, [MarshalAs(UnmanagedType.Interface)] out IShellItem shellItem);
+    [LibraryImport("shlwapi.dll", StringMarshalling = StringMarshalling.Utf16)]
+    public static partial HRESULT SHLoadIndirectString(string pszSource, Span<char> pszOutBuf, uint cchOutBuf, nint ppvReserved);
 
-    [DllImport("shlwapi.dll", CharSet = CharSet.Unicode)]
-    public static extern HRESULT SHCreateStreamOnFileEx(string fileName, STGM grfMode, uint attributes, bool create, System.Runtime.InteropServices.ComTypes.IStream reserved, out System.Runtime.InteropServices.ComTypes.IStream stream);
-
-    [DllImport("shlwapi.dll", CharSet = CharSet.Unicode)]
-    public static extern HRESULT SHLoadIndirectString(string pszSource, StringBuilder pszOutBuf, uint cchOutBuf, nint ppvReserved);
+    [LibraryImport("shlwapi.dll", StringMarshalling = StringMarshalling.Utf16)]
+    public static partial int SHCreateStreamOnFileEx(
+        string pszFile,
+        uint grfMode,
+        uint dwAttributes,
+        [MarshalAs(UnmanagedType.Bool)] bool fCreate,
+        IntPtr pstmTemplate,
+        out IntPtr ppstm);
 
     public enum HRESULT : uint
     {
@@ -129,14 +133,14 @@ public enum SIGDN : uint
     public interface IShellItem
     {
         void BindToHandler(
-            nint pbc,
-            [MarshalAs(UnmanagedType.LPStruct)] Guid bhid,
-            [MarshalAs(UnmanagedType.LPStruct)] Guid riid,
-            out nint ppv);
+            IntPtr pbc,
+            ref Guid bhid,
+            ref Guid riid,
+            out IntPtr ppv);
 
         void GetParent(out IShellItem ppsi);
 
-        void GetDisplayName(SIGDN sigdnName, [MarshalAs(UnmanagedType.LPWStr)] out string ppszName);
+        void GetDisplayName(SIGDN sigdnName, out IntPtr ppszName);
 
         void GetAttributes(uint sfgaoMask, out uint psfgaoAttribs);
 
@@ -154,4 +158,24 @@ public enum STGM : long
         READWRITE = 0x00000002L,
         CREATE = 0x00001000L,
     }
+
+    [CustomMarshaller(typeof(IShellItem), MarshalMode.ManagedToUnmanagedOut, typeof(IShellItemMarshallerOut))]
+    public static partial class IShellItemMarshallerOut
+    {
+        public static IShellItem? ConvertToManaged(IntPtr unmanaged)
+        {
+            if (unmanaged == IntPtr.Zero)
+            {
+                return null;
+            }
+
+            var obj = Marshal.GetObjectForIUnknown(unmanaged);
+            return (IShellItem)obj;
+        }
+
+        public static void Free(IntPtr managed)
+        {
+            Marshal.FreeCoTaskMem(managed);
+        }
+    }
 }

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ShellLocalization.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Concurrent;
 using System.IO;
+using System.Runtime.InteropServices;
 using static Microsoft.CmdPal.Ext.Apps.Utils.Native;
 
 namespace Microsoft.CmdPal.Ext.Apps.Utils;
@@ -40,7 +41,20 @@ public string GetLocalizedName(string path)
             return string.Empty;
         }
 
-        shellItem.GetDisplayName(SIGDN.NORMALDISPLAY, out var filename);
+        if (shellItem == null)
+        {
+            return string.Empty;
+        }
+
+        shellItem.GetDisplayName(SIGDN.NORMALDISPLAY, out var filenamePtr);
+
+        // get filename from ptr
+        var filename = Marshal.PtrToStringUni(filenamePtr);
+        Marshal.FreeCoTaskMem(filenamePtr);
+        if (filename == null)
+        {
+            return string.Empty;
+        }
 
         _ = _localizationCache.TryAdd(lowerInvariantPath, filename);