fix file loading

Barotrauma/BarotraumaShared/SharedSource/Lua/LuaScriptLoader.cs

@@ -4,6 +4,7 @@ using System.Text;
 using System.IO;
 using MoonSharp.Interpreter;
 using MoonSharp.Interpreter.Loaders;
+using System.Linq;
 
 namespace Barotrauma
 {
@@ -11,18 +12,11 @@ namespace Barotrauma
 
 		public class LuaScriptLoader : ScriptLoaderBase
 		{
-			public LuaSetup lua;
-
-			public LuaScriptLoader(LuaSetup l)
-			{
-				lua = l;
-			}
-
 
 			public override object LoadFile(string file, Table globalContext)
 			{
-				if (!LuaFile.IsPathAllowedLuaException(file, false)) return null;
+				if (!LuaFile.IsPathAllowedLuaException(file, false)) return null; 
-
+				
 				return File.ReadAllText(file);
 			}
 
@@ -32,7 +26,6 @@ namespace Barotrauma
 
 				return File.Exists(file);
 			}
-
+        }
-		}
 	}
 }

Barotrauma/BarotraumaShared/SharedSource/Lua/LuaSetup.cs

@@ -126,6 +126,13 @@ namespace Barotrauma
 
 		public DynValue DoFile(string file, Table globalContext = null, string codeStringFriendly = null)
 		{
+			if (!LuaFile.IsPathAllowedLuaException(file, false)) return null;
+			if (!LuaFile.Exists(file))
+			{
+				HandleLuaException(new Exception($"dofile: File {file} not found."));
+				return null;
+			}
+
 			try
 			{
 				return lua.DoFile(file, globalContext, codeStringFriendly);
@@ -157,6 +164,13 @@ namespace Barotrauma
 
 		public DynValue LoadFile(string file, Table globalContext = null, string codeStringFriendly = null)
 		{
+			if (!LuaFile.IsPathAllowedLuaException(file, false)) return null;
+			if (!LuaFile.Exists(file))
+			{
+				HandleLuaException(new Exception($"loadfile: File {file} not found."));
+				return null;
+			}
+
 			try
 			{
 				return lua.LoadFile(file, globalContext, codeStringFriendly);
@@ -223,7 +237,7 @@ namespace Barotrauma
 
 			PrintMessage("Lua! Version " + AssemblyInfo.GitRevision);
 
-			luaScriptLoader = new LuaScriptLoader(this);
+			luaScriptLoader = new LuaScriptLoader();
 			luaScriptLoader.ModulePaths = new string[] { };
 
 			LuaCustomConverters.RegisterAll();