code: def get_voms_proxy_user():
      
      out = _voms_proxy_info(["--identity"])[1].strip()
      try:
          return re.match(r".*\/CN\=([^\/]+).*", out.strip()).group(1)
      except:
          raise Exception("no valid identity found in voms proxy: {}".format(out))
docs: Returns the owner of the voms proxy.