From dcbdbdb0cf3c825791cf384a6c1afa2eaa5e1a96 Mon Sep 17 00:00:00 2001
From: Caelan Sayler <git@caesay.com>
Date: Fri, 25 Mar 2022 13:40:49 +0000
Subject: [PATCH] Remove subsystem check and generate stubs for console apps

---
 src/Squirrel/Internal/Utility.cs | 31 -------------------------------
 src/SquirrelCli/Program.cs       |  3 +--
 2 files changed, 1 insertion(+), 33 deletions(-)

diff --git a/src/Squirrel/Internal/Utility.cs b/src/Squirrel/Internal/Utility.cs
index bd2a975af..c7369ef08 100644
--- a/src/Squirrel/Internal/Utility.cs
+++ b/src/Squirrel/Internal/Utility.cs
@@ -586,37 +586,6 @@ public static Uri AddQueryParamsToUri(Uri uri, IEnumerable<KeyValuePair<string,
             return builder.Uri;
         }
 
-        // http://stackoverflow.com/questions/3111669/how-can-i-determine-the-subsystem-used-by-a-given-net-assembly
-        public static bool ExecutableUsesWin32Subsystem(string peImage)
-        {
-            using (var s = new FileStream(peImage, FileMode.Open, FileAccess.Read)) {
-                var rawPeSignatureOffset = new byte[4];
-                s.Seek(0x3c, SeekOrigin.Begin);
-                s.Read(rawPeSignatureOffset, 0, 4);
-
-                int peSignatureOffset = rawPeSignatureOffset[0];
-                peSignatureOffset |= rawPeSignatureOffset[1] << 8;
-                peSignatureOffset |= rawPeSignatureOffset[2] << 16;
-                peSignatureOffset |= rawPeSignatureOffset[3] << 24;
-
-                var coffHeader = new byte[24];
-                s.Seek(peSignatureOffset, SeekOrigin.Begin);
-                s.Read(coffHeader, 0, 24);
-
-                byte[] signature = { (byte) 'P', (byte) 'E', (byte) '\0', (byte) '\0' };
-                for (int index = 0; index < 4; index++) {
-                    if (coffHeader[index] != signature[index]) throw new Exception("File is not a PE image");
-                }
-
-                var subsystemBytes = new byte[2];
-                s.Seek(68, SeekOrigin.Current);
-                s.Read(subsystemBytes, 0, 2);
-
-                int subSystem = subsystemBytes[0] | subsystemBytes[1] << 8;
-                return subSystem == 2; /*IMAGE_SUBSYSTEM_WINDOWS_GUI*/
-            }
-        }
-
         readonly static string[] peExtensions = new[] { ".exe", ".dll", ".node" };
         public static bool FileIsLikelyPEImage(string name)
         {
diff --git a/src/SquirrelCli/Program.cs b/src/SquirrelCli/Program.cs
index 62486ac09..9f1da3bfd 100644
--- a/src/SquirrelCli/Program.cs
+++ b/src/SquirrelCli/Program.cs
@@ -288,9 +288,8 @@ RuntimeCpu parseMachine(PeNet.Header.Pe.MachineType machine)
                     Log.Info("Creating stub executables");
                     new DirectoryInfo(pkgPath).GetAllFilesRecursively()
                         .Where(x => x.Name.EndsWith(".exe", StringComparison.InvariantCultureIgnoreCase))
-                        .Where(x => !x.Name.Contains("squirrel.exe", StringComparison.InvariantCultureIgnoreCase))
+                        .Where(x => !x.Name.Equals("squirrel.exe", StringComparison.InvariantCultureIgnoreCase))
                         .Where(x => Utility.IsFileTopLevelInPackage(x.FullName, pkgPath))
-                        .Where(x => Utility.ExecutableUsesWin32Subsystem(x.FullName))
                         .ToArray() // materialize the IEnumerable so we never end up creating stubs for stubs
                         .ForEach(x => createExecutableStubForExe(x.FullName));