Check protection of the quarry

technic/machines/HV/quarry.lua

@@ -60,6 +60,12 @@ local function set_quarry_demand(meta)
 end
 
 local function quarry_receive_fields(pos, formname, fields, sender)
+	local player_name = sender:get_player_name()
+	if minetest.is_protected(pos, player_name) then
+		minetest.chat_send_player(player_name, "You are not allowed to edit this!")
+		minetest.record_protection_violation(pos, player_name)
+		return
+	end
 	local meta = minetest.get_meta(pos)
 	if fields.size and string.find(fields.size, "^[0-9]+$") then
 		local size = tonumber(fields.size)