Hiding assemblies from IReflectionManager

Marsey/Stealthsey/Hidesey.cs

@@ -122,6 +122,7 @@ public static void Disperse()
     /// </summary>
     public static void PostLoad()
     {
+        Veil.Patch();
         HWID.Force();
         DiscordRPC.Patch();
 
@@ -184,7 +185,7 @@ public static void HidePatch(Assembly marsey)
     }
 
     /// <summary>
-    /// Undermines system functions, hides what doesnt belong from view
+    /// Undermines system functions, hides what doesn't belong from view
     /// </summary>
     /// <exception cref="HideseyException">Thrown if ThrowOnFail is true and any of the patches fails to apply</exception>
     private static void Perjurize()

Marsey/Stealthsey/Veil.cs

@@ -0,0 +1,58 @@
+using System.Reflection;
+using HarmonyLib;
+using JetBrains.Annotations;
+using Marsey.Handbreak;
+using Marsey.Misc;
+
+namespace Marsey.Stealthsey;
+
+/// <summary>
+/// Hide extra assemblies from IReflectionManager
+/// </summary>
+internal static class Veil
+{
+    private static List<string?> HiddenAssemblies = [];
+
+    internal static void Patch()
+    {
+        Type? CRM = Helpers.TypeFromQualifiedName("Robust.Shared.Reflection.ReflectionManager");
+        if (CRM == null) return;
+
+        MarseyLogger.Log(MarseyLogger.LogType.DEBG, "Veil", "Patching.");
+
+        MethodInfo AsmGetter = AccessTools.PropertyGetter(CRM, "Assemblies");
+        MethodInfo Prefix = AccessTools.Method(typeof(Veil), "Prefix");
+        Manual.Patch(AsmGetter, Prefix, HarmonyPatchType.Prefix);
+    }
+
+    [UsedImplicitly]
+    private static bool Prefix(ref IReadOnlyList<Assembly> __result, object __instance)
+    {
+        List<Assembly>? originalAssemblies = Traverse.Create(__instance).Field("assemblies").GetValue<List<Assembly>>();
+        if (originalAssemblies == null)
+        {
+            __result = new List<Assembly>().AsReadOnly();
+            return false;
+        }
+
+        // Filter out assemblies whose names are in HiddenAssemblies
+        List<Assembly> veiledAssemblies = originalAssemblies
+            .Where(asm =>
+            {
+                string? value = asm.GetName().Name;
+                return value != null && !HiddenAssemblies.Contains(value);
+            })
+            .ToList();
+
+        MarseyLogger.Log(MarseyLogger.LogType.TRCE, "Veil", $"Hidden {HiddenAssemblies.Count} assemblies.");
+        // Return the filtered list as a read-only list
+        __result = veiledAssemblies.AsReadOnly();
+        return false;
+    }
+
+    public static void Hide(Assembly asm)
+    {
+        string? name = asm.GetName().Name;
+        if (name != null) HiddenAssemblies.Add(name);
+    }
+}

Marsey/Subversion/Subverse.cs

@@ -64,6 +64,9 @@ private static void Postfix(object __instance)
             Assembly subverterAssembly = Assembly.LoadFrom(path);
             MarseyLogger.Log(MarseyLogger.LogType.DEBG, "Subversion", $"Sideloading {path}");
             AssemblyFieldHandler.InitLogger(subverterAssembly, subverterAssembly.FullName);
+
+            // Stealthsey methods
+            Veil.Hide(subverterAssembly);
             Sedition.InitSedition(subverterAssembly, subverterAssembly.FullName);
 
             loadGameAssemblyMethod.Invoke(__instance, new object[] { subverterAssembly });