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import dpkt
import json
import binascii
from cStringIO import StringIO
from inform import InformSerializer, Cryptor
d = json.load(open("devices.json"))
KEYSTORE = { i['mac']: i['x_authkey'] for i in d }
def add_colons_to_mac(mac_addr):
mac_addr = binascii.hexlify(mac_addr)
return ":".join([mac_addr[i*2:i*2+2] for i in range(12/2)]).lower()
records = []
buffer = StringIO()
for ts, buf in dpkt.pcap.Reader(open("mfi.out")):
eth = dpkt.ethernet.Ethernet(buf)
data = eth.data.tcp.data.split("\r\n")[-1]
if data.startswith("TNBU") and buffer.tell() != 0:
records.append(buffer.getvalue())
buffer.seek(0)
buffer.write(data)
else:
buffer.write(data)
ser = InformSerializer("", KEYSTORE)
for data in records:
try:
packet = ser.parse(StringIO(data))
print packet.raw_payload
except:
print "BAD"
continue
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