How to genereate OpenVPN configuration with certificate

The Experiment Manager provides a ReST API for generating the OpenVPN configuration file automatically.

def get_certificate():
    username = post_get('username')
    if not username:
        raise bottle.HTTPError(500, "Username missing")
    password = post_get('password', default=None)
    days = int(post_get('days', default=None))
    cert_gen = CertificateGenerator()
    cert_gen.generate(password, username, days)
    openvpn_config = cert_gen.get_openvpn_config()
    headers = {
        'Content-Type': 'text/plain;charset=UTF-8',
        'Content-Disposition': 'attachment; filename="softfire-vpn_%s.ovpn"' % username,
        "Content-Length": len(openvpn_config)
    return bottle.HTTPResponse(openvpn_config, 200, **headers)

From the code we see that this is a POST method with the following body parameters:

  • username: the username of the openvpn user
  • password: in case you want to encrypt the private key with passphrase
  • days: number of validity days (starting from today)

The requesting user need to belong to the portal role or higher.

The following shell commands can be used to retrieve the certificate file, a complete example can be found here

curl -X POST --cookie-jar $COOKIE_FILE --form "username=$API_USER" --form "password=$API_PW" ${API_URL}/login
curl -s -X POST --cookie $COOKIE_FILE --form "username=${USERNAME}" --form "password=${PASSWORD}" --form "days=$VALID" ${API_URL}/certificates
curl -X GET --cookie-jar $COOKIE_FILE --cookie $COOKIE_FILE ${API_URL}/logout