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편집 파일: authentication.cpython-38.pyc
U )�eO � @ s� d Z ddlmZ ddlZddlmZ ddlmZmZ G dd� de �Z G d d � d e �Z G d d � d e �Z G d d� de �Z dd� ZdS )z5Implementing support for MySQL Authentication Plugins� )�sha1N� )�errors)�PY2�isstrc @ s2 e Zd ZdZdZdZd dd�Zdd� Zd d � ZdS ) �BaseAuthPlugina� Base class for authentication plugins Classes inheriting from BaseAuthPlugin should implement the method prepare_password(). When instantiating, auth_data argument is required. The username, password and database are optional. The ssl_enabled argument can be used to tell the plugin whether SSL is active or not. The method auth_response() method is used to retrieve the password which was prepared by prepare_password(). F� Nc C s" || _ || _|| _|| _|| _dS )ZInitializationN)� _auth_dataZ _username� _passwordZ _database� _ssl_enabled)�self� auth_data�username�passwordZdatabaseZ ssl_enabled� r �s/opt/hc_python/lib64/python3.8/site-packages/../../../lib/python3.8/site-packages/mysql/connector/authentication.py�__init__2 s zBaseAuthPlugin.__init__c C s t �dS )z�Prepares and returns password to be send to MySQL This method needs to be implemented by classes inheriting from this class. It is used by the auth_response() method. Raises NotImplementedError. N)�NotImplementedError�r r r r �prepare_password; s z BaseAuthPlugin.prepare_passwordc C s( | j r | js t�dj| jd���| �� S )z�Returns the prepared password to send to MySQL Raises InterfaceError on errors. For example, when SSL is required by not enabled. Returns str z{name} requires SSL)�name)� requires_sslr r �InterfaceError�format� plugin_namer r r r r � auth_responseE s �z BaseAuthPlugin.auth_response)NNNF) �__name__� __module__� __qualname__�__doc__r r r r r r r r r r ! s � r c @ s e Zd ZdZdZdZdd� ZdS )� MySQLNativePasswordAuthPluginzBClass implementing the MySQL Native Password authentication pluginFZmysql_native_passwordc C s* | j st�d��| jsdS | j}t| j�r8| j�d�}n| j}trzt|�}zt| j �}W q� tk rv t�d��Y q�X n |}| j }d}zht |�� � }t |�� � }t || �� � }tr�dd� t ||�D �}ndd� t ||�D �}t j d |�� }W n4 tk �r$ } zt�d �|���W 5 d}~X Y nX |S ) z;Prepares and returns password as native MySQL 4.1+ passwordz"Missing authentication data (seed)� zutf-8z Authentication data incorrectNc S s g | ]\}}t |�t |�A �qS r )�ord��.0Zh1Zh3r r r � <listcomp>w s zBMySQLNativePasswordAuthPlugin.prepare_password.<locals>.<listcomp>c S s g | ]\}}||A �qS r r r# r r r r% y s �20Bz Failed scrambling password; {0})r& )r r r r r �encoder �buffer� TypeErrorr �digest�zip�struct�pack� Exceptionr ) r r r Zhash4Zhash1Zhash2Zhash3Zxored�excr r r r Y s< �z.MySQLNativePasswordAuthPlugin.prepare_passwordN�r r r r r r r r r r r r S s r c @ s e Zd ZdZdZdZdd� ZdS )� MySQLClearPasswordAuthPluginzAClass implementing the MySQL Clear Password authentication pluginTZmysql_clear_passwordc C sF | j s dS | j }tr*t|t�r>|�d�}nt|t�r>|�d�}|d S �z!Returns password as as clear text� �utf8�r r � isinstance�unicoder' �str�r r r r r r � s z-MySQLClearPasswordAuthPlugin.prepare_passwordNr0 r r r r r1 � s r1 c @ s e Zd ZdZdZdZdd� ZdS )� MySQLSHA256PasswordAuthPluginz�Class implementing the MySQL SHA256 authentication plugin Note that encrypting using RSA is not supported since the Python Standard Library does not provide this OpenSSL functionality. TZsha256_passwordc C sF | j s dS | j }tr*t|t�r>|�d�}nt|t�r>|�d�}|d S r2 r5 r9 r r r r � s z.MySQLSHA256PasswordAuthPlugin.prepare_passwordNr0 r r r r r: � s r: c C s4 t �� D ]}|j| kr| S qt�d�| ���dS )a. Return authentication class based on plugin name This function returns the class for the authentication plugin plugin_name. The returned class is a subclass of BaseAuthPlugin. Raises errors.NotSupportedError when plugin_name is not supported. Returns subclass of BaseAuthPlugin. z,Authentication plugin '{0}' is not supportedN)r �__subclasses__r r ZNotSupportedErrorr )r Z authclassr r r �get_auth_plugin� s �r< )r �hashlibr r, r r Zcatch23r r �objectr r r1 r: r< r r r r �<module> s 2/