Amazon Dash Button ARP listener script (not written by me)

dash-listen-3.py

#!/usr/bin/python
# Adapted from original written by Bob Steinbeiser (https://medium.com/@xtalker)

import socket
import struct
import binascii

def tide_button(arp_detailed):
        dest_ip = socket.inet_ntoa(arp_detailed[8])
        print 'Tide button pressed, IP = ' + dest_ip

def bounty_button(arp_detailed):
        dest_ip = socket.inet_ntoa(arp_detailed[8])
        print 'Bounty button pressed, IP = ' + dest_ip

def cottonelle_button(arp_detailed):
        dest_ip = socket.inet_ntoa(arp_detailed[8])
        print 'Cottonelle button pressed, IP = ' + dest_ip



MAC_MAP = {
'asdfasdfasdf': tide_button,
'werwerererer': bounty_button,
'hjkhjkhjkhjk': cottonelle_button,
}


rawSocket = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(0x0003))

while True:
        packet = rawSocket.recvfrom(2048)
        ethernet_header = packet[0][0:14]
        ethernet_detailed = struct.unpack("!6s6s2s", ethernet_header)
        # skip non-ARP packets
        ethertype = ethernet_detailed[2]
        if ethertype != '\x08\x06':
                continue
        arp_header = packet[0][14:42]
        arp_detailed = struct.unpack("2s2s1s1s2s6s4s6s4s", arp_header)
        src_ip = socket.inet_ntoa(arp_detailed[6])
        if src_ip != '0.0.0.0': # ARP Probe
                continue
        source_mac = binascii.hexlify(arp_detailed[5])
        if source_mac in MAC_MAP:
                MAC_MAP[source_mac](arp_detailed)
        else:
                print "Unknown MAC: [" + source_mac + "] IP = ["  + dest_ip + "]"