local defs = {}

minetest.after(0.01, function()
	for name, def in pairs(minetest.registered_items) do
		if def.can_dig then
			defs[name] = {}
			defs[name].can_dig = def.can_dig
			defs[name].on_metadata_inventory_take = def.on_metadata_inventory_take
			def.can_dig = function (pos,player)
				local node = minetest.get_node(pos)
				local meta = minetest.get_meta(pos)
				local owner = meta:get_string("owner")
				local def = defs[node.name]
				local inv = meta:get_inventory()
				local is_empty = true
				for inv_name in pairs(meta:to_table()["inventory"]) do
					if not inv:is_empty(inv_name) then is_empty = false end
				end
				if owner ~= "" and owner ~= player:get_player_name() then
					return defs[name].can_dig (pos,player)
				end
				for inv_name in pairs(meta:to_table()["inventory"]) do
					if not inv:is_empty(inv_name) then
						local size = inv:get_size(inv_name)
						for i = 1, size do
							local item = inv:get_stack(inv_name, i)
							if item ~= nil then
								minetest.add_item({x = pos.x + math.random() * 2 - 1, y = pos.y+math.random() * 2, z = pos.z + math.random() * 2 - 1}, item)
								inv:set_stack(inv_name, i, "")
							end
						end
					end
				end
				return defs[name].can_dig (pos,player)
			end
		end
	end
end
)