ffho-packages/ffho/ffho-autoupdater-wifi-fallback/luasrc/usr/sbin/wpa_supplicant

#!/usr/bin/lua
local uci = require('simple-uci').cursor()

local ifnames = {}
uci:foreach('wireless', 'wifi-iface',
  function(s)
    table.insert(ifnames, s['.name'])
  end
)

for _, ifname in ipairs(ifnames) do
  local iface = uci:get_all('wireless', ifname)
  if not uci:get_bool('wireless', ifname, 'disabled') and iface.mode == 'sta' and iface.ifname and iface.device and iface.ssid then
    local command = 'iw dev ' .. iface.ifname .. ' connect -w ' .. iface.ssid
    if iface.bssid then
      command = command .. ' ' .. iface.bssid
    end
    os.execute(command)
  end
end