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feat(sandbox) block bytecode when possible

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Enrique García Cota
2021-01-05 14:23:24 +01:00
committed by Enrique García Cota
parent 485a14697c
commit d4e8634ccd
3 changed files with 45 additions and 19 deletions
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13
sandbox.lua
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@@ -33,9 +33,9 @@ local sandbox = {
local quota_supported = type(_G.jit) == "nil"
sandbox.quota_supported = quota_supported
-- PUC-Rio Lua 5.1 does not support deactivation of binary code
local mode_supported = _ENV or type(_G.jit) == "table"
sandbox.mode_supported = mode_supported
-- PUC-Rio Lua 5.1 does not support deactivation of bytecode
local bytecode_blocked = _ENV or type(_G.jit) == "table"
sandbox.bytecode_blocked = bytecode_blocked
-- The base environment is merged with the given env option (or an empty table, if no env provided)
--
@@ -143,12 +143,9 @@ function sandbox.protect(code, options)
local f
if mode_supported then
f = assert(load(code, nil, options.mode, env))
if bytecode_blocked then
f = assert(load(code, nil, 't', env))
else
if options.mode then
error("options.mode is not supported on this environment (usually PUC-Rio Lua 5.1). Please unset options.mode")
end
f = assert(loadstring(code))
setfenv(f, env)
end