| # Copyright 2016 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Updates Chrome's "lastrun" value for the current user in HKCU.""" |
| |
| import _winreg |
| import optparse |
| import sys |
| import time |
| |
| |
| def UpdateLastrun(client_state_key_path): |
| """ Updates Chrome's "lastrun" value in the registry to the current time. |
| |
| Args: |
| client_state_key_path: The path to Chrome's ClientState key in the registry. |
| """ |
| # time.time returns seconds since the Unix epoch. Chrome uses microseconds |
| # since the Windows epoch. Adjust based on values inspired by |
| # https://support.microsoft.com/en-us/kb/167296, which uses 100-nanosecond |
| # ticks. |
| now_us = str(int(time.time() * 1000000 + 11644473600000000L)) |
| try: |
| with _winreg.OpenKey(_winreg.HKEY_CURRENT_USER, client_state_key_path, 0, |
| _winreg.KEY_SET_VALUE | |
| _winreg.KEY_WOW64_32KEY) as key: |
| _winreg.SetValueEx(key, 'lastrun', 0, _winreg.REG_SZ, now_us) |
| except WindowsError: |
| raise KeyError('Failed opening registry key HKEY_CURRENT_USER\\%s' |
| % client_state_key_path) |
| return 0 |
| |
| |
| def main(): |
| usage = 'usage: %prog client_state_key_path' |
| parser = optparse.OptionParser(usage, |
| description='Update Chrome\'s "lastrun" value.') |
| _, args = parser.parse_args() |
| if len(args) != 1: |
| parser.error('Incorrect number of arguments.') |
| |
| UpdateLastrun(args[0]) |
| return 0 |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |
