lua sandbox

local hasloaded = false;

local ty, p = type, pairs;
local smt, gmt = setmetatable, getmetatable;
local sfe, gte = setfenv, getfenv;
local rs = rawset;

function tCopy(t, lookup_table)
    if (t == nil) then return nil end

    local copy = {}
    smt(copy, gmt(t))
    for i,v in p(t) do
        if ( !ty(v) == "table" ) then
            copy[i] = v
        else
            lookup_table = lookup_table or {}
            lookup_table[t] = copy
            if lookup_table[v] then
                copy[i] = lookup_table[v] -- we already copied this table. reuse the copy.
            else
                copy[i] = tCopy(v,lookup_table) -- not yet copied. copy it.
            end
        end
    end
    return copy
end

local function LoadLuaFileProtected( lf )
    local ENV = {};
    local GLOBAL = tCopy( _G );
    // add detoured func like this
    // GLOBAL.func = oldfunc;
    setmetatable( ENV, { __index = GLOBAL } );
    local oldENV = gte( 0 );
    sfe( 0, ENV );
    LUA_LoadFile( lf );
    sfe( 0, oldENV );
end

// rushed, whatever
setmetatable( package.loaded, {
    __newindex = function( t,k,v )
        if( k == "notification" && hasloaded == false ) then
            hasloaded = true;
            LoadLuaFileProtected( "client\\luastartup\\nm.lua" );
            LoadLuaFileProtected( "client\\luastartup\\lol.lua" );
        end
        rs( t,k,v );
    end,
})