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pyopenssl.cpython-36.pyc
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You can install them with the following command: pip install pyopenssl cryptography idna To activate certificate checking, call :func:`~urllib3.contrib.pyopenssl.inject_into_urllib3` from your Python code before you begin making HTTP requests. This can be done in a ``sitecustomize`` module, or at any other time before your application begins using ``urllib3``, like this:: try: import urllib3.contrib.pyopenssl urllib3.contrib.pyopenssl.inject_into_urllib3() except ImportError: pass Now you can use :mod:`urllib3` as you normally would, and it will support SNI when the required modules are installed. Activating this module also has the positive side effect of disabling SSL/TLS compression in Python 2 (see `CRIME attack`_). If you want to configure the default list of supported cipher suites, you can set the ``urllib3.contrib.pyopenssl.DEFAULT_SSL_CIPHER_LIST`` variable. .. _sni: https://en.wikipedia.org/wiki/Server_Name_Indication .. _crime attack: https://en.wikipedia.org/wiki/CRIME_(security_exploit) � )�absolute_importN)�x509)�backend)� _Certificate)�timeout�error)�BytesIO)� _fileobject� )�backport_makefile)�six)�util�inject_into_urllib3�extract_from_urllib3T�PROTOCOL_TLSv1_1�TLSv1_1_METHOD�PROTOCOL_TLSv1_2�TLSv1_2_METHODc c s | ]\}}||fV qd S )N� )�.0�k�vr r � /usr/lib/python3.6/pyopenssl.py� <genexpr>` s r i @ c C s. t � ttj_tt_ttj_dt_dtj_dS )z7Monkey-patch urllib3 with PyOpenSSL-backed SSL-support.TN)�_validate_dependencies_met�PyOpenSSLContextr �ssl_� SSLContext�HAS_SNI� IS_PYOPENSSLr r r r r m s c C s( t tj_tt_ttj_dt_dtj_dS )z4Undo monkey-patching by :func:`inject_into_urllib3`.FN)�orig_util_SSLContextr r r �orig_util_HAS_SNIr r r r r r r y s c C sR ddl m} t| dd�dkr$td��ddlm} |� }t|dd�dkrNtd��dS ) z{ Verifies that PyOpenSSL's package-level dependencies have been met. Throws `ImportError` if they are not met. r )� Extensions�get_extension_for_classNzX'cryptography' module missing required functionality. Try upgrading to v1.3.4 or newer.)�X509�_x509zS'pyOpenSSL' module missing required functionality. Try upgrading to v0.14 or newer.)Z cryptography.x509.extensionsr" �getattr� ImportErrorZOpenSSL.cryptor$ )r" r$ r r r r r � s r c C s( dd� }|| �} t jdkr$| jd�} | S )a� Converts a dNSName SubjectAlternativeName field to the form used by the standard library on the given Python version. Cryptography produces a dNSName as a unicode string that was idna-decoded from ASCII bytes. We need to idna-encode that string to get it back, and then on Python 3 we also need to convert to unicode via UTF-8 (the stdlib uses PyUnicode_FromStringAndSize on it, which decodes via UTF-8). c S sN ddl }x:dD ]2}| j|�r| t|�d� } |jd�|j| � S qW |j| �S )z� Borrowed wholesale from the Python Cryptography Project. 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