applicationFirewallAutoSwitch.lua

;-------------------------------- 設定 ----------------------------------
TETHERING_SSIDS = {"iPhone 7 Plus", "iPhone 8 Plus"}
PASSWORD = "0000"
;--------------------------------------------------------------------------
DEBUG = true
;--------------------------------------------------------------------------

function setApplicationFirewall(arg)
	hs.execute("echo " .. PASSWORD .. " | sudo -S /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate " .. arg)
end

function ssidChangedCallback(watcher, msg, interface)
    local currentSSID = hs.wifi.currentNetwork()
	if DEBUG then
		hs.console.printStyledtext(currentSSID)
	end
	local matched = false
	for i,m in ipairs(TETHERING_SSIDS) do
		if m == currentSSID then
			matched = true
			break
		end
	end
    if matched == false then
		if DEBUG then
			hs.console.printStyledtext("Firewall Off")
		end
    	setApplicationFirewall("off")
    else
		setApplicationFirewall("on")
		if DEBUG then
		    hs.console.printStyledtext("Firewall On")
		end
    end
end

hs.wifi.watcher.new(ssidChangedCallback):start()