def is_user_blocked(cls, username):
user = {}
with cls._lock:
now = datetime.now()
user = cls._failed_logins.get(username)
#Block username for 'login_block_timeout' seconds if failed consecutively for 'login_retry_times' times
if user and len(user['time']
) >= SystemSettingsManage.get_login_retry_times():
dt = abs((now - user['time'][-1]).total_seconds())
if dt < SystemSettingsManage.get_tamper_protection_timeout():
return True
cls._failed_logins.pop(username, None)
return False
def login_failed(cls, username):
with cls._lock:
now = datetime.now()
user = cls._failed_logins.get(username, {})
if user:
user['time'] = [
dt for dt in user['time']
if abs((now - dt).total_seconds()) <
SystemSettingsManage.get_login_retry_window()
]
if len(user['time']
) >= SystemSettingsManage.get_login_retry_times():
user['time'].pop(0, None)
else:
user['time'] = []
user['time'].append(now)
cls._failed_logins[username] = user