def do_GET(self):

        ctx = self.ctx

        ctx['action'] = 'input parameters check'
        for k, v in self.get_params().items():
            ctx[k] = self.headers.get(v[0], v[1])
            if ctx[k] == None:
                self.auth_failed(ctx, 'required "%s" header was not passed' % k)
                return True

        ctx['action'] = 'performing authorization'
        auth_header = self.headers.get('Authorization')
        auth_cookie = self.get_cookie(ctx['cookiename'])

        if auth_cookie != None or auth_cookie != '':
            auth_header = "Basic " + auth_cookie
            self.log_message("using username/password from cookie %s" %
                             ctx['cookiename'])
        else:
            self.log_message("using username/password from authorization header")

        if auth_header is None or not auth_header.lower().startswith('basic '):

            self.send_response(401)
            self.send_header('WWW-Authenticate', 'Basic realm=' + ctx['realm'])
            self.send_header('Cache-Control', 'no-cache')
            self.end_headers()

            return True

        ctx['action'] = 'decoding credentials'

        try:
            auth_decoded = base64.b64decode(auth_header[6:])
            user, passwd = auth_decoded.split(':', 2)

        except:
            self.auth_failed(ctx)
            return True

        ctx['user'] = user
        ctx['pass'] = passwd

        # Continue request processing
        return False
dataset/ETHPy150Open nginxinc/nginx-ldap-auth/nginx-ldap-auth-daemon.py/AuthHandler.do_GET/operator `and` -> `or`