detects dash button presses

dash.py

from scapy.all import *
from datetime import datetime

# blocked these macs in router to avoid notifications. however, this makes them try longer.
# fake server: https://github.com/ide/dash-button/issues/59
# maybe set google as primary dns and rpi as secondary: https://medium.com/@tombatossals/cheating-the-amazon-dash-iot-button-the-almost-easy-way-e5bc62f93f8c
macs = {
  "ac:63:be:ea:5b:1b": "kleenex",
  "ac:63:be:ba:2f:85": "oral-b"
}

def udp_filter(p):
  # print p.show()
  if p[IP].id == 1:
    print datetime.now(), macs[p.src], p.summary()

sniff(prn=udp_filter, filter="udp", iface="wlan0", store=0, lfilter=lambda x: x.src in macs)