Get WIFI Access Point status for MacOSX

get-ap-status

#!/usr/bin/python
# vi: set ts=4 sw=4 sts=0 et:

import sys,time,subprocess
from datetime import datetime

AIRPORT='/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport'
AIRPORT_OPT=('-I')
cmdline=(AIRPORT,AIRPORT_OPT)
subproc_args = {'shell': False,
                'stdin': subprocess.PIPE,
                'stdout': subprocess.PIPE,
                'stderr': subprocess.STDOUT,
                'cwd': '/',
                'close_fds': True,
               }

while True:
    try:
        p = subprocess.Popen(cmdline, **subproc_args)
    except OSError:
        print("Failed to execute command: %s" % cmdline[0])
        sys.exit(1)
    (stdout, stdin) = (p.stdout, p.stdin)
    data = {}
    for line in stdout:
        d = line.strip().split(':', 1)
        data[d[0]] = d[1].strip()
    try:
        rssi = int(data["agrCtlRSSI"])
        rssi_state = "bad"
        if rssi > -60:
            rssi_state = "good"
        elif rssi > -75:
            rssi_state = "normal"

        print("[%s] %s(%s, %d/%dMbps, %d ch) - RSSI: %d(%s)" %
               (datetime.now().strftime("%Y/%m/%d %H:%M:%S"),
                data["SSID"],
                data["BSSID"],
                int(data["lastTxRate"]),
                int(data["maxRate"]),
                int(data["channel"]),
                rssi, rssi_state,
               ))
    except KeyError:
        print("[%s] Not Connected" % datetime.now().strftime("%Y/%m/%d %H:%M:%S"))
    time.sleep(3)