otp-backend

import csv
import datetime
import json
import logging
import requests
import threading
import web

urls = ('/', 'Random')
app = web.application(urls, globals())

class Random:
    def GET(self):
        retval = None
        with open('.otp.json') as fin:
            retval_ = json.loads(fin.read())
            retval = retval_.values()
        return retval

    def HEAD(self):
        # Get 6-digit random.org digit
        param = {'num':'1', 'min': '0', 'max': '1000000', 'col':'1', 'base':'10','format': 'plain', 'rnd': 'new'}
        random_six_digits = requests.get('https://www.random.org/integers/', params=param, verify=False).content
        password = random_six_digits.strip()

        expiration_ = datetime.datetime.now() + datetime.timedelta(minutes=1)
        logging.debug("OTP until {1} is {0}".format(password, expiration_))
        expiration = expiration_.strftime('%s')
        with open('.otp.json','w') as fout:
            fout.write(json.dumps({'password': password, 'expiration': expiration}))

if __name__ == '__main__':
    logging.basicConfig(level=logging.FATAL)
    r = Random()
    r.expiration = datetime.datetime.min
    r.HEAD()
    threading.Timer(60, (lambda:r.HEAD())).start()
    app.run()