py/toolkit/uninstaller.py

#!/usr/bin/env python2
#
# Copyright 2020 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Factory toolkit uninstaller.

Remove all factory toolkit related files on CrOS device.
"""

from __future__ import print_function

import argparse
import os
import sys

from six.moves import input

import factory_common  # pylint: disable=unused-import
from cros.factory.test.env import paths
from cros.factory.tools import install_symlinks
from cros.factory.utils import file_utils
from cros.factory.utils import log_utils
from cros.factory.utils import process_utils
from cros.factory.utils import sys_utils

HELP_HEADER = """
Uninstall the factory toolkit on a CrOS device.
"""

FACTORY_DIRS = ['/var/factory', paths.FACTORY_DIR]


def AssertEnvironment():
  if not sys_utils.InCrOSDevice():
    raise Exception(
        "ERROR: You're not on a CrOS device (for more details, please "
        'check sys_utils.py:InCrOSDevice). The uninstaller only works on '
        'CrOS device.')
  if os.getuid() != 0:
    raise Exception('You must be root to uninstall the factory toolkit on a '
                    'CrOS device.')


def MakeWarningMessage():
  ret = file_utils.ReadFile(paths.FACTORY_TOOLKIT_VERSION_PATH)
  ret += (
      '\n'
      '\n'
      '*** You are about to uninstall the factory toolkit at:\n')

  for p in FACTORY_DIRS:
    ret += '***   %s\n' % p

  ret += '***'

  return ret


def Main():
  log_utils.InitLogging()

  parser = argparse.ArgumentParser(
      description=HELP_HEADER,
      formatter_class=argparse.RawDescriptionHelpFormatter)
  parser.add_argument('--yes', '-y', action='store_true',
                      help="Don't ask for confirmation")

  args = parser.parse_args()

  AssertEnvironment()

  print(MakeWarningMessage())
  if not args.yes:
    answer = input('*** Continue? [y/N] ')
    if not answer or answer[0] not in 'yY':
      sys.exit('Aborting.')

  # To recover the symlinks under /usr/local/bin. We need to re-create the links
  # to factory-mini.par.
  install_symlinks.UninstallSymlinks('/usr/local/bin',
                                     install_symlinks.MODE_FULL)
  install_symlinks.InstallSymlinks('../factory-mini/factory-mini.par',
                                   '/usr/local/bin', install_symlinks.MODE_MINI)

  # Delete all factory related files.
  for p in FACTORY_DIRS:
    process_utils.Spawn(['rm', '-rf', p], check_call=True, log=True)


if __name__ == '__main__':
  Main()