Gets info about currently associated AP from Aironet Extensions

cisco_ap_info.py

#!/usr/bin/python
import os
import json

#Run tshark, get single beacon frame, decode fields we want.
#Should be only thing on current association frequency beaconing hopefully.

#I can't be bothered with subprocess, cheat.
os.system("tshark -I -i en0 -f 'type mgt subtype beacon' -Tjson -e 'wlan.cisco.ccx1.name' -e 'wlan.cisco.ccx1.clients' -e 'wlan_radio.frequency' -e 'wlan_radio.signal_dbm' -e 'wlan_radio.noise_dbm' -c 1 -Q > /tmp/tsout1 2>/dev/null")

f = open("/tmp/tsout1", "r")
inp = ''.join(f.readlines())
fields = json.loads(inp)
f.close()

#Grab the fields
name = fields[0]['_source']['layers']['wlan.cisco.ccx1.name'][0]
clients = fields[0]['_source']['layers']['wlan.cisco.ccx1.clients'][0]
frequency = fields[0]['_source']['layers']['wlan_radio.frequency'][0]
signal = fields[0]['_source']['layers']['wlan_radio.signal_dbm'][0]
noise = fields[0]['_source']['layers']['wlan_radio.noise_dbm'][0]

#Print the fields
print ("Associated AP: "+name)
print ("Connected Clients: "+clients)
print ("Frequency: "+frequency)
print ("Signal dB: "+signal)
print ("Noise dB: "+noise)