From 9f5eb531b6a5b57826f515797c02866b6342930b Mon Sep 17 00:00:00 2001
From: zombieb <admin@proxnet.dev>
Date: Tue, 23 Sep 2025 23:10:24 -0400
Subject: [PATCH] Linux fix w/ config. Might implement properly later.

---
 Core/Config/Config.cs                |  2 ++
 Core/Init.cs                         |  2 ++
 Patches/Internals/DeviceIdBuilder.cs | 29 ++++++++++++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 Patches/Internals/DeviceIdBuilder.cs

diff --git a/Core/Config/Config.cs b/Core/Config/Config.cs
index b45ccac..df26cb3 100644
--- a/Core/Config/Config.cs
+++ b/Core/Config/Config.cs
@@ -23,6 +23,7 @@ namespace undead_universal_patch_il2cpp.Core.Config
         public static ConfigEntry<bool> RegistrationPatch;
         public static ConfigEntry<bool> AFKPatch;
         public static ConfigEntry<bool> RefreshTokenFix;
+        public static ConfigEntry<bool> ProtonDeviceIdFix;
     }
     public static class PatchConfigDefaults
     {
@@ -33,6 +34,7 @@ namespace undead_universal_patch_il2cpp.Core.Config
         public static bool RegistrationPatch = false;
         public static bool AFKPatch = false;
         public static bool RefreshTokenFix = false;
+        public static bool ProtonDeviceIdFix = false;
     }
     public static class ServerPatchesConfig
     {
diff --git a/Core/Init.cs b/Core/Init.cs
index fd21a30..38ccf05 100644
--- a/Core/Init.cs
+++ b/Core/Init.cs
@@ -95,6 +95,8 @@ public class Initialization
         PatchConfig.RefreshTokenFix = UniversalPatchPlugin.Instance.Config.Bind("Patches", "RefreshTokenFix", PatchConfigDefaults.RefreshTokenFix,
             "Fix for the game needlessly requesting a refresh token in a loop. Cause for this issue is unknown." +
             "\nDon't enable unless you know what this does.");
+        PatchConfig.ProtonDeviceIdFix = UniversalPatchPlugin.Instance.Config.Bind("Patches", "ProtonDeviceIdFix", PatchConfigDefaults.ProtonDeviceIdFix,
+            "Fix for device IDs on Wine/Proton. Enable if you get a null reference exception related to cryptography APIs during connect/token.");
 
         ServerPatchesConfig.CustomEmotes = UniversalPatchPlugin.Instance.Config.Bind("ServerPatches", "CustomEmotes", ServerPatchesConfigDefaults.CustomEmotes,
             "Modify the game's emote text with a configuration from the server.");
diff --git a/Patches/Internals/DeviceIdBuilder.cs b/Patches/Internals/DeviceIdBuilder.cs
new file mode 100644
index 0000000..e835aa7
--- /dev/null
+++ b/Patches/Internals/DeviceIdBuilder.cs
@@ -0,0 +1,29 @@
+using System.Reflection;
+using System.Text;
+using HarmonyLib;
+using Il2CppInterop.Runtime.InteropTypes.Arrays;
+using undead_universal_patch_il2cpp.Core;
+using undead_universal_patch_il2cpp.Core.Config;
+
+namespace undead_universal_patch_il2cpp.Patches.Internals;
+
+[HarmonyPatch]
+public class DeviceIdBuilder
+{
+    static PatchTypesResult typesResult = Util.ConfigPreparePatchTypes(
+        PatchConfig.ProtonDeviceIdFix,
+        "Proton quickfix for device ID errors",
+        "RecRoom.Utils.DeviceIdBuilder",
+        "CalculateOtherDeviceId"
+    );
+
+    static MethodBase TargetMethod() => typesResult.Method;
+    static bool Prepare() => typesResult.Success;
+
+    static bool Prefix(ref Il2CppStructArray<byte> __result)
+    {
+        Util.ConditionalDebug("Device ID patched");
+        __result = new Il2CppStructArray<byte>(Encoding.UTF8.GetBytes("Wine/Proton"));
+        return false;
+    }
+}
\ No newline at end of file