"""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()
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