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a p�h�3 � @ s d Z ddlZddlZddlZddlZzHddlZddlmZ ddlmZ z ej Z W n e yh ej Z Y n0 W n e y� dZY n0 ddlmZ ddlmZmZ dd lmZmZ G d d � d �ZG d d � d ee�ZG dd� dee�ZG dd� d�ZG dd� ded�ZG dd� de�ZdS )a� A library for integrating :doc:`pyOpenSSL <pyopenssl:index>` with Cheroot. The :py:mod:`OpenSSL <pyopenssl:OpenSSL>` module must be importable for SSL/TLS/HTTPS functionality. You can obtain it from `here <https://github.com/pyca/pyopenssl>`_. To use this module, set :py:attr:`HTTPServer.ssl_adapter <cheroot.server.HTTPServer.ssl_adapter>` to an instance of :py:class:`ssl.Adapter <cheroot.ssl.Adapter>`. There are two ways to use :abbr:`TLS (Transport-Level Security)`: Method One ---------- * :py:attr:`ssl_adapter.context <cheroot.ssl.pyopenssl.pyOpenSSLAdapter.context>`: an instance of :py:class:`SSL.Context <pyopenssl:OpenSSL.SSL.Context>`. If this is not None, it is assumed to be an :py:class:`SSL.Context <pyopenssl:OpenSSL.SSL.Context>` instance, and will be passed to :py:class:`SSL.Connection <pyopenssl:OpenSSL.SSL.Connection>` on bind(). The developer is responsible for forming a valid :py:class:`Context <pyopenssl:OpenSSL.SSL.Context>` object. This approach is to be preferred for more flexibility, e.g. if the cert and key are streams instead of files, or need decryption, or :py:data:`SSL.SSLv3_METHOD <pyopenssl:OpenSSL.SSL.SSLv3_METHOD>` is desired instead of the default :py:data:`SSL.SSLv23_METHOD <pyopenssl:OpenSSL.SSL.SSLv3_METHOD>`, etc. Consult the :doc:`pyOpenSSL <pyopenssl:api/ssl>` documentation for complete options. Method Two (shortcut) --------------------- * :py:attr:`ssl_adapter.certificate <cheroot.ssl.pyopenssl.pyOpenSSLAdapter.certificate>`: the file name of the server's TLS certificate. * :py:attr:`ssl_adapter.private_key <cheroot.ssl.pyopenssl.pyOpenSSLAdapter.private_key>`: the file name of the server's private key file. Both are :py:data:`None` by default. If :py:attr:`ssl_adapter.context <cheroot.ssl.pyopenssl.pyOpenSSLAdapter.context>` is :py:data:`None`, but ``.private_key`` and ``.certificate`` are both given and valid, they will be read, and the context will be automatically created from them. .. spelling:: pyopenssl � N)�SSL)�crypto� )�Adapter� )�errors�server)� StreamReader� StreamWriterc sV e Zd ZdZdZdZdd� Z� fdd�Zd� fd d � Z� fd d �Z � fd d�Z � Z S )�SSLFileobjectMixinz#Base mixin for a TLS socket stream.� g{�G�z�?c O s~ t � � }z||i |��W S tjy: t �| j� Y �n" tjyZ t �| j� Y �n tjy� } zX|r�|jdkr�W Y d}~dS |jd }|r�|tj v r�W Y d}~dS t � |��W Y d}~n�d}~0 tj �yZ } zv|r�|jdkr�W Y d}~dS d}z|jd d d }W n t �y& Y n0 |dk�r:t�� �tj|j� �W Y d}~n d}~0 0 t � � | | jkrt �d��qdS )z�Wrap the given call with TLS error-trapping. is_reader: if False EOF errors will be raised. 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Ref: :py:class:`SSL.Context <pyopenssl:OpenSSL.SSL.Context>` ) r �ContextZ SSLv23_METHODZuse_privatekey_filerl rm �load_verify_locationsZuse_certificate_filerk )r �cr r r r5 ' s z pyOpenSSLAdapter.get_contextc C sJ dddt jjtjjtjjtjf t�tj �� � d�}| j �rFt | j d��"}t �t j|�� �}W d � n1 sp0 Y |�|�� |�� d�� d|�� fd |�� ffD ]�\}}t|�d d � }d | }|||< |r�|�d �}|d|� ||d d� }} |�d�}|d|� ||d d� }} | r�| r�d|| f }| ||< q�q�|S )z;Return WSGI environ entries to be merged into each request.�https�onz%s %s/%s Python/%s)zwsgi.url_schemeZHTTPSZSSL_VERSION_INTERFACEZSSL_VERSION_LIBRARY�rbN)ZSSL_SERVER_M_VERSIONZSSL_SERVER_M_SERIAL�I�S� ���zSSL_SERVER_%s_DN�=r �/zSSL_SERVER_%s_DN_%s)�cheroot_serverZ HTTPServer�version�OpenSSL� __title__� __version__�sysr ZSSLeay_versionZSSLEAY_VERSION�decoderk �openr Zload_certificateZ FILETYPE_PEMr8 �update� get_versionZget_serial_numberZ get_issuerZ get_subject�str�rfind) r Z ssl_environ� cert_file�cert�prefix�dnZdnstrZwsgikey�pos�value�keyr r r rp 4 sF ��� �"� � z pyOpenSSLAdapter.get_environ�rr c C sJ d|v r t nt}tr8t|t�r8||||�}|�� |_|S t�|||�S dS )zReturn socket file object.r� N) r0 r3 r � isinstance� ssl_conn_typerG r r� Z CP_fileobject)r rq �mode�bufsize�clsZwrapped_socketr r r rD l s �� zpyOpenSSLAdapter.makefile)NN)r� r )r+ r, r- r. rk rl rm ro rn rf r9 rt r5 rp rD r/ r r r% r rh � s � 8rh ) r. r r� rd r ZOpenSSL.versionr� r r rc r� �AttributeErrorZConnectionTyperi � r r r r� rD r r r r0 r3 r4 rb rh r r r r �<module> s. 4 Z8
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