models.py 文件源码

def find_by_cookie(cls, cookie_str):
        if not cookie_str:
            return None
        try:
            L = cookie_str.split('-')
            if len(L) != 3:
                return None
            uid, expires, sha1 = L
            if int(expires) < time.time():
                return None
            user = await cls.find(uid)
            if not user:
                return None
            s = '%s-%s-%s-%s' % (uid, user.get('password'), expires, COOKIE_KEY)
            if sha1 != hashlib.sha1(s.encode('utf-8')).hexdigest():
                logging.info('invalid sha1')
                return None
            user.password = '******'
            return user
        except Exception as e:
            logging.exception(e)
            return None


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