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Diffstat (limited to 'mesecons_luacontroller/init.lua')
| -rw-r--r-- | mesecons_luacontroller/init.lua | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua index 7d76b26..3c34887 100644 --- a/mesecons_luacontroller/init.lua +++ b/mesecons_luacontroller/init.lua @@ -273,9 +273,23 @@ end local function get_digiline_send(pos) if not digiline then return end return function(channel, msg) + -- Make sure channel is string, number or boolean + if (type(channel) ~= "string" and type(channel) ~= "number" and type(channel) ~= "boolean") then + return false + end + + -- No sending functions over the wire and make sure serialized version + -- of the data is not insanely long to prevent DoS-like attacks + msg = mesecon.tablecopy_stripfunctions(msg) + local msg_ser = minetest.serialize(msg) + if #msg_ser > mesecon.setting("luacontroller_digiline_maxlen", 50000) then + return false + end + minetest.after(0, function() digiline:receptor_send(pos, digiline.rules.default, channel, msg) end) + return true end end @@ -284,6 +298,7 @@ local safe_globals = { "assert", "error", "ipairs", "next", "pairs", "select", "tonumber", "tostring", "type", "unpack", "_VERSION" } + local function create_environment(pos, mem, event) -- Gather variables for the environment local vports = minetest.registered_nodes[minetest.get_node(pos).name].virtual_portstates |