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luaur_vm/functions/
lua_l_sandboxthread.rs

1use crate::functions::lua_pushvalue::lua_pushvalue;
2use crate::functions::lua_replace::lua_replace;
3use crate::functions::lua_setfield::lua_setfield;
4use crate::functions::lua_setmetatable::lua_setmetatable;
5use crate::functions::lua_setreadonly::lua_setreadonly;
6use crate::functions::lua_setsafeenv::lua_setsafeenv;
7use crate::macros::lua_globalsindex::LUA_GLOBALSINDEX;
8use crate::macros::lua_newtable::lua_newtable;
9use crate::type_aliases::lua_state::lua_State;
10
11#[allow(non_snake_case)]
12pub unsafe fn lua_l_sandboxthread(L: *mut lua_State) {
13    // create new global table that proxies reads to original table
14    lua_newtable(L);
15
16    lua_newtable(L);
17
18    lua_pushvalue(L, LUA_GLOBALSINDEX);
19
20    lua_setfield(L, -2, c"__index".as_ptr());
21
22    lua_setreadonly(L, -1, 1);
23
24    lua_setmetatable(L, -2);
25
26    // we can set safeenv now although it's important to set it to false if code is loaded twice into the thread
27    lua_replace(L, LUA_GLOBALSINDEX);
28
29    lua_setsafeenv(L, LUA_GLOBALSINDEX, 1);
30}