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Cleanup state stack during sandboxing process

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This commit is contained in:
Alessandro Proto 2023-02-17 16:08:25 +01:00
parent b86d330532
commit 40295112fe
1 changed files with 7 additions and 4 deletions
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11
Capy64/Runtime/Sandbox.cs
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@ -37,6 +37,8 @@ internal class Sandbox
L.OpenOS(); L.OpenOS();
L.OpenPackage(); L.OpenPackage();
L.SetTop(0);
} }
internal static void Patch(Lua L) internal static void Patch(Lua L)
{ {
@ -70,10 +72,11 @@ internal class Sandbox
L.PushString("config"); L.PushString("config");
L.PushString(packageConfig); L.PushString(packageConfig);
L.SetTable(-4); L.SetTable(-4);
L.Pop(1);
// delete 3 and 4 searchers // delete 3 and 4 searchers
L.PushString("searchers"); L.PushString("searchers");
L.GetTable(-3); L.GetTable(-2);
L.PushNil(); L.PushNil();
L.SetInteger(-2, 3); L.SetInteger(-2, 3);
@ -84,7 +87,7 @@ internal class Sandbox
L.PushCFunction(L_Searcher); L.PushCFunction(L_Searcher);
L.SetInteger(-2, 2); L.SetInteger(-2, 2);
L.Pop(L.GetTop()); L.Pop(2);
// Replace loadfile with sandboxed one // Replace loadfile with sandboxed one
L.PushCFunction(L_Loadfile); L.PushCFunction(L_Loadfile);
@ -94,8 +97,6 @@ internal class Sandbox
L.PushCFunction(L_Dofile); L.PushCFunction(L_Dofile);
L.SetGlobal("dofile"); L.SetGlobal("dofile");
L.Pop(L.GetTop());
// yeet dangerous os functions // yeet dangerous os functions
L.GetGlobal("os"); L.GetGlobal("os");
@ -118,6 +119,8 @@ internal class Sandbox
L.PushString("getenv"); L.PushString("getenv");
L.PushNil(); L.PushNil();
L.SetTable(-3); L.SetTable(-3);
L.Pop(1);
} }
internal static int L_Searcher(IntPtr state) internal static int L_Searcher(IntPtr state)