1 import os

     2 from binascii import hexlify

     3 

     4 restart_stunnel_cmdline = ["/etc/init.d/S50stunnel","restart"]

     5 

     6 def pskgen(ID, pskpath):

     7     secretstring = hexlify(os.urandom(256))

     8     pskstring = ID+":"+secretstring

     9     with open(pskpath, 'w') as f:

    10         f.write(pskstring)

    11     call(restart_stunnel_cmdline)

    12 

    13 def ensurepsk(ID, pskpath):

    14     # check if already there

    15     if not os.path.exists(pskpath):

    16         # create if needed

    17         pskgen(IS, pskpath)

    18