overflow_receive.lua

shell.run("clear")
print("overflow protection")

rednet.open("left")

while true do
    _, msg, _ = rednet.receive("_overflow")

    mArg = {}
    for w in msg:gmatch("%S+") do
        table.insert(mArg, w)
    end

    if mArg[1] == "block" then
        redstone.setOutput("front", true)

        shell.run("clear")
        print("blocking...")
    elseif mArg[1] == "allow" then
        redstone.setOutput("front", false)

        shell.run("clear")
        print("allowing...")
    end
end