chrome/test/mini_installer/uninstall_chrome.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 """Uninstalls Chrome.
   6
   7 This script reads the uninstall command from registry, calls it, and verifies
   8 the output status code.
   9 """
  10
  11 import _winreg
  12 import optparse
  13 import subprocess
  14 import sys
  15
  16
  17 def main():
  18   parser = optparse.OptionParser(description='Uninstall Chrome.')
  19   parser.add_option('--system-level', action='store_true', dest='system_level',
  20                     default=False, help='Uninstall Chrome at system level.')
  21   parser.add_option('--chrome-long-name', default='Google Chrome',
  22                     help='Google Chrome or Chromium)')
  23   parser.add_option('--interactive', action='store_true', dest='interactive',
  24                     default=False, help='Ask before uninstalling Chrome.')
  25   parser.add_option('--no-error-if-absent', action='store_true',
  26                     dest='no_error_if_absent', default=False,
  27                     help='No error if the registry key for uninstalling Chrome '
  28                          'is absent.')
  29   options, _ = parser.parse_args()
  30
  31   # TODO(sukolsak): Add support for uninstalling MSI-based Chrome installs when
  32   # we support testing MSIs.
  33   if options.system_level:
  34     root_key = _winreg.HKEY_LOCAL_MACHINE
  35   else:
  36     root_key = _winreg.HKEY_CURRENT_USER
  37   sub_key = ('SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\%s' %
  38              options.chrome_long_name)
  39   # Query the key. It will throw a WindowsError if the key doesn't exist.
  40   try:
  41     key = _winreg.OpenKey(root_key, sub_key, 0, _winreg.KEY_QUERY_VALUE)
  42   except WindowsError:
  43     if options.no_error_if_absent:
  44       return 0
  45     raise KeyError('Registry key %s\\%s is missing' % (
  46         'HKEY_LOCAL_MACHINE' if options.system_level else 'HKEY_CURRENT_USER',
  47         sub_key))
  48   if options.interactive:
  49     prompt = ('Warning: This will uninstall %s at %s. Do you want to continue? '
  50               '(y/N) ' % (options.chrome_long_name,
  51                           'system-level' if
  52                               options.system_level else 'user-level'))
  53     if raw_input(prompt).strip() != 'y':
  54       print >> sys.stderr, 'User aborted'
  55       return 1
  56   uninstall_string, _ = _winreg.QueryValueEx(key, 'UninstallString')
  57   exit_status = subprocess.call(uninstall_string + ' --force-uninstall',
  58                                 shell=True)
  59   # The exit status for successful uninstallation of Chrome is 19 (see
  60   # chrome/installer/util/util_constants.h).
  61   if exit_status != 19:
  62     raise Exception('Could not uninstall Chrome. The installer exited with '
  63                     'status %d.' % exit_status)
  64   return 0
  65
  66
  67 if __name__ == '__main__':
  68   sys.exit(main())