diff options
| -rw-r--r-- | mesecons_luacontroller/init.lua | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua index 839d150..2aa4328 100644 --- a/mesecons_luacontroller/init.lua +++ b/mesecons_luacontroller/init.lua @@ -249,8 +249,8 @@ end local safe_globals = { - "assert", "error", "ipairs", "next", "pairs", "pcall", "select", - "tonumber", "tostring", "type", "unpack", "_VERSION", "xpcall", + "assert", "error", "ipairs", "next", "pairs", "select", + "tonumber", "tostring", "type", "unpack", "_VERSION" } local function create_environment(pos, mem, event) -- Gather variables for the environment @@ -340,17 +340,17 @@ end local function timeout() debug.sethook() -- Clear hook - error("Code timed out!") + error("Code timed out!", 2) end local function code_prohibited(code) -- LuaJIT doesn't increment the instruction counter when running -- loops, so we have to sanitize inputs if we're using LuaJIT. - if not jit then + if not rawget(_G, "jit") then return false end - local prohibited = {"while", "for", "do", "repeat", "until", "goto"} + local prohibited = {"while", "for", "repeat", "until", "goto"} code = " "..code.." " for _, p in ipairs(prohibited) do if string.find(code, "[^%w_]"..p.."[^%w_]") then @@ -369,10 +369,26 @@ local function create_sandbox(code, env) setfenv(f, env) return function(...) - debug.sethook(timeout, "", 10000) + -- Normal Lua: Use instruction counter to stop execution + -- after luacontroller_maxevents. + -- LuaJIT: Count function calls instead of instructions, allows usage + -- of function keyword. However, LuaJIT still doesn't trigger + -- lines events when using infinite loops. + local maxevents = mesecon.setting("luacontroller_maxevents", 10000) + if not rawget(_G, "jit") then + debug.sethook(timeout, "", maxevents) + else + local events = 0 + debug.sethook(function () + events = events + 1 + if events > maxevents then + timeout() + end + end, "c") + end local ok, ret = pcall(f, ...) debug.sethook() -- Clear hook - if not ok then error(ret) end + if not ok then error(ret, 0) end return ret end end |