openvpn stats

#!/usr/bin/python
# -*- coding: utf-8 -*-

import web
import os
import subprocess

web.config.debug = False
urls = ('/', 'cputemp','/vpn', 'vpn')
app = web.application(urls, globals(),autoreload=True)

def getvpnstats():
    STATUS = "/var/log/openvpn-status.log"

    status_file = open(STATUS, 'r')
    stats = status_file.readlines()
    status_file.close()

    hosts = []

    headers = {
        'cn':    'Common Name',
        'virt':  'Virtual Address',
        'real':  'Real Address',
        'sent':  'Sent',
        'recv':  'Received',
        'since': 'Connected Since'
    }

    sizes = [
        (1<<50L, 'PB'),
        (1<<40L, 'TB'),
        (1<<30L, 'GB'),
        (1<<20L, 'MB'),
        (1<<10L, 'KB'),
        (1,       'B')
    ]

    def byte2str(size):
        for f, suf in sizes:
            if size >= f:
                break

        return "%.2f %s" % (size / float(f), suf)

    for line in stats:
        cols = line.split(',')

        if len(cols) == 5 and not line.startswith('Common Name'):
            host  = {}
            host['cn']    = cols[0]
            host['real']  = cols[1].split(':')[0]
            host['recv']  = byte2str(int(cols[2]))
            host['sent']  = byte2str(int(cols[3]))
            host['since'] = cols[4].strip()
            hosts.append(host)

        if len(cols) == 4 and not line.startswith('Virtual Address'):
            for h in hosts:
                if h['cn'] == cols[1]:
                    h['virt'] = cols[0]


    fmt = "%(cn)-25s %(virt)-18s %(real)-15s %(sent)13s %(recv)13s %(since)25s"
#   print fmt % headers
    return fmt % headers +"\n\n"+ "\n".join([fmt % h for h in hosts])

# Return CPU temperature as a character string
def getCPUtemperature():
        s = subprocess.check_output(["/opt/vc/bin/vcgencmd","measure_temp"])
        return s.split('=')[1][:-3]


class cputemp:
    def GET(self):
        temp1=getCPUtemperature()
                return "CPU temp "+str(temp1)
class vpn:
    def GET(self):
        stats=getvpnstats()
                return stats

if __name__ == '__main__':
    app.run()