"""Utility functions for xauth.""" import hashlib import os import subprocess class NotFoundError(Exception): """Error when xauth was not found.""" def is_installed(): """ Return whether or not xauth is installed. """ try: xauth = subprocess.Popen( ["xauth", "-V"], # env=self._env(), stdout=subprocess.PIPE, stderr=subprocess.PIPE, ) _, _ = xauth.communicate() # p = EasyProcess(["xauth", "-V"]) # p.enable_stdout_log = False # p.enable_stderr_log = False # p.call() except FileNotFoundError: return False else: return True def generate_mcookie(): """ Generate a cookie string suitable for xauth. """ data = os.urandom(16) # 16 bytes = 128 bit return hashlib.md5(data).hexdigest() def call(*args): """ Call xauth with the given args. """ xauth = subprocess.Popen( ["xauth"] + list(args), # env=self._env(), stdout=subprocess.PIPE, stderr=subprocess.PIPE, ) _, _ = xauth.communicate() # EasyProcess(["xauth"] + list(args)).call()