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How to use check_credentials method in tempest

Best Python code snippet using tempest_python

auth.py

Source:auth.py

...38        if realm is not None:39            self.realm = realm  # shadow class attribute40        self._check_credentials = check_credentials41        super().__init__(*args, **kwargs)42    async def check_credentials(self, username: str, password: str) -> bool:43        """44        Check whether credentials are authorized.45        This coroutine may be overridden in a subclass, for example to46        authenticate against a database or an external service.47        Args:48            username: HTTP Basic Auth username.49            password: HTTP Basic Auth password.50        Returns:51            bool: :obj:`True` if the handshake should continue;52            :obj:`False` if it should fail with a HTTP 401 error.53        """54        if self._check_credentials is not None:55            return await self._check_credentials(username, password)56        return False57    async def process_request(58        self,59        path: str,60        request_headers: Headers,61    ) -> Optional[HTTPResponse]:62        """63        Check HTTP Basic Auth and return a HTTP 401 response if needed.64        """65        try:66            authorization = request_headers["Authorization"]67        except KeyError:68            return (69                http.HTTPStatus.UNAUTHORIZED,70                [("WWW-Authenticate", build_www_authenticate_basic(self.realm))],71                b"Missing credentials\n",72            )73        try:74            username, password = parse_authorization_basic(authorization)75        except InvalidHeader:76            return (77                http.HTTPStatus.UNAUTHORIZED,78                [("WWW-Authenticate", build_www_authenticate_basic(self.realm))],79                b"Unsupported credentials\n",80            )81        if not await self.check_credentials(username, password):82            return (83                http.HTTPStatus.UNAUTHORIZED,84                [("WWW-Authenticate", build_www_authenticate_basic(self.realm))],85                b"Invalid credentials\n",86            )87        self.username = username88        return await super().process_request(path, request_headers)89def basic_auth_protocol_factory(90    realm: Optional[str] = None,91    credentials: Optional[Union[Credentials, Iterable[Credentials]]] = None,92    check_credentials: Optional[Callable[[str, str], Awaitable[bool]]] = None,93    create_protocol: Optional[Callable[[Any], BasicAuthWebSocketServerProtocol]] = None,94) -> Callable[[Any], BasicAuthWebSocketServerProtocol]:95    """96    Protocol factory that enforces HTTP Basic Auth.97    :func:`basic_auth_protocol_factory` is designed to integrate with98    :func:`~websockets.server.serve` like this::99        websockets.serve(100            ...,101            create_protocol=websockets.basic_auth_protocol_factory(102                realm="my dev server",103                credentials=("hello", "iloveyou"),104            )105        )106    Args:107        realm: indicates the scope of protection. It should contain only ASCII108            characters because the encoding of non-ASCII characters is109            undefined. Refer to section 2.2 of :rfc:`7235` for details.110        credentials: defines hard coded authorized credentials. It can be a111            ``(username, password)`` pair or a list of such pairs.112        check_credentials: defines a coroutine that verifies credentials.113            This coroutine receives ``username`` and ``password`` arguments114            and returns a :class:`bool`. One of ``credentials`` or115            ``check_credentials`` must be provided but not both.116        create_protocol: factory that creates the protocol. By default, this117            is :class:`BasicAuthWebSocketServerProtocol`. It can be replaced118            by a subclass.119    Raises:120        TypeError: if the ``credentials`` or ``check_credentials`` argument is121            wrong.122    """123    if (credentials is None) == (check_credentials is None):124        raise TypeError("provide either credentials or check_credentials")125    if credentials is not None:126        if is_credentials(credentials):127            credentials_list = [cast(Credentials, credentials)]128        elif isinstance(credentials, Iterable):129            credentials_list = list(credentials)130            if not all(is_credentials(item) for item in credentials_list):131                raise TypeError(f"invalid credentials argument: {credentials}")132        else:133            raise TypeError(f"invalid credentials argument: {credentials}")134        credentials_dict = dict(credentials_list)135        async def check_credentials(username: str, password: str) -> bool:136            try:137                expected_password = credentials_dict[username]138            except KeyError:139                return False140            return hmac.compare_digest(expected_password, password)141    if create_protocol is None:142        # Not sure why mypy cannot figure this out.143        create_protocol = cast(144            Callable[[Any], BasicAuthWebSocketServerProtocol],145            BasicAuthWebSocketServerProtocol,146        )147    return functools.partial(148        create_protocol,149        realm=realm,...

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