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[CSM] Improve security for client-sided mods (#5100)

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red-001 2017-01-28 16:24:25 +00:00 • committed by Loïc Blot
parent 92b45b2a18
commit a50d07d39a
6 changed files with 172 additions and 30 deletions
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5
builtin/common/strict.lua
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@ -3,6 +3,7 @@
-- This ignores mod namespaces (variables with the same name as the current mod).
local WARN_INIT = false
local getinfo = debug.getinfo
function core.global_exists(name)
if type(name) ~= "string" then
@ -18,7 +19,7 @@ local declared = {}
local warned = {}
function meta:__newindex(name, value)
local info = debug.getinfo(2, "Sl")
local info = getinfo(2, "Sl")
local desc = ("%s:%d"):format(info.short_src, info.currentline)
if not declared[name] then
local warn_key = ("%s\0%d\0%s"):format(info.source,
@ -42,7 +43,7 @@ end
function meta:__index(name)
local info = debug.getinfo(2, "Sl")
local info = getinfo(2, "Sl")
local warn_key = ("%s\0%d\0%s"):format(info.source, info.currentline, name)
if not declared[name] and not warned[warn_key] and info.what ~= "C" then
core.log("warning", ("Undeclared global variable %q accessed at %s:%s")