def get_auth(handler: ZoeRequestHandler):
"""Try to authenticate a request."""
if handler.get_secure_cookie('zoe'):
cookie_val = str(handler.get_secure_cookie('zoe'))
uid, role = cookie_val[2:-1].split('.')
log.debug(
'Authentication done using cookie (user {} from {} for {})'.format(
uid, handler.request.remote_ip, handler.request.path))
return uid, role
else:
return None, None
