scripts/get_genica_bundle.py

   1 #!/usr/bin/env python
   2 import os
   3 import re
   4 import urllib2
   5 import subprocess
   6
   7 BUNDLE_URL="https://www.emulab.net/genica.bundle"
   8
   9 def get_bundle():
  10     u = urllib2.urlopen(BUNDLE_URL)
  11     upath = urllib2.urlparse.urlsplit(u.url)[2]
  12     bundle_fname = os.path.basename(upath)
  13     open(bundle_fname, 'w').write(u.read())
  14     print "Downloaded:", bundle_fname
  15     return bundle_fname
  16
  17 def get_CN(cert):
  18     p = subprocess.Popen(['openssl', 'x509', '-issuer'], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
  19     p.stdin.write(cert)
  20     m = re.search("(CN=)(.*)([\/ ])", p.stdout.readline())
  21     if m:
  22         return m.group(2)
  23
  24 def write_cert(cert):
  25     cn = get_CN(cert)
  26     if not cn: return
  27     fname = '%s.gid' % cn
  28     open(fname, 'w').write(cert)
  29     print "Wrote:", fname
  30
  31 def extract(fname):
  32     bundle = open(fname, 'r')
  33     in_cert = False
  34     cert = ""
  35     for line in bundle:
  36         if line.startswith("-----BEGIN CERTIFICATE-----"):
  37             in_cert = True
  38         elif line.startswith("-----END CERTIFICATE-----"):
  39             in_cert = False
  40             cert += line
  41             write_cert(cert)
  42             cert = ""
  43
  44         if in_cert:
  45             cert += line
  46
  47 if __name__ == "__main__":
  48     bundle = get_bundle()
  49     extract(bundle)