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Edit: pyopenssl.cpython-37.pyc
B ��`�A � @ sx d Z ddlmZ ddlZddlmZ ddlmZ ddl m Z yddl m Z W n$ ek rp G dd � d e�Z Y nX dd lmZ dd lmZ dd lmZ ydd lmZ W n$ ek r� dZddlmZ Y nX ddlZddlZddlZddl m Z ddl m Z ddl m!Z! ddgZ"dZ#e j$ej%j&e!ej%j&ej'ej%j(iZ)e*ed��r\e*ej%d��r\ej%j+e)ej,< e*ed��r�e*ej%d��r�ej%j-e)ej.< e*ed��r�e*ej%d��r�ej%j/e)ej0< ej1ej%j2ej3ej%j4ej5ej%j4ej%j6 iZ7e8d d � e7�9� D ��Z:d Z;e j#Z<e j=j>Z?e�@eA�ZBd d� ZCd d� ZDd!d"� ZEd#d$� ZFd%d&� ZGG d'd(� d(eH�ZIe�rRd0d*d+�ZJneZJeJeI_JG d,d-� d-eH�ZKd.d/� ZLdS )1a� TLS with SNI_-support for Python 2. Follow these instructions if you would like to verify TLS certificates in Python 2. Note, the default libraries do *not* do certificate checking; you need to do additional work to validate certificates yourself. This needs the following packages installed: * `pyOpenSSL`_ (tested with 16.0.0) * `cryptography`_ (minimum 1.3.4, from pyopenssl) * `idna`_ (minimum 2.0, from cryptography) However, pyopenssl depends on cryptography, which depends on idna, so while we use all three directly here we end up having relatively few packages required. You can install them with the following command: .. code-block:: bash $ python -m 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: .. code-block:: python 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`_). .. _sni: https://en.wikipedia.org/wiki/Server_Name_Indication .. _crime attack: https://en.wikipedia.org/wiki/CRIME_(security_exploit) .. _pyopenssl: https://www.pyopenssl.org .. _cryptography: https://cryptography.io .. _idna: https://github.com/kjd/idna � )�absolute_importN)�x509)�backend)� _Certificate)�UnsupportedExtensionc @ s e Zd ZdS )r N)�__name__� __module__� __qualname__� r r �J/opt/alt/python37/lib/python3.7/site-packages/urllib3/contrib/pyopenssl.pyr ; s r )�BytesIO)�error)�timeout)� _fileobject� )�backport_makefile)�util)�six)�PROTOCOL_TLS_CLIENT�inject_into_urllib3�extract_from_urllib3T�PROTOCOL_SSLv3� SSLv3_METHOD�PROTOCOL_TLSv1_1�TLSv1_1_METHOD�PROTOCOL_TLSv1_2�TLSv1_2_METHODc c s | ]\}}||fV qd S )Nr )�.0�k�vr r r � <genexpr>m s r i @ c C s4 t � tt_ttj_tt_ttj_dt_dtj_dS )z7Monkey-patch urllib3 with PyOpenSSL-backed SSL-support.TN)�_validate_dependencies_met�PyOpenSSLContextr � SSLContext�ssl_�HAS_SNI� IS_PYOPENSSLr r r r r y s c C s. t t_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 � 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� }d| kr| S || �} | dkr(dS t jdkr<| �d�} | 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). If the name cannot be idna-encoded then we return None signalling that the name given should be skipped. c S sl ddl }yFx:dD ]2}| �|�r| t|�d� } |�d�|�| � S qW |�| �S |jjk rf dS X dS )z� Borrowed wholesale from the Python Cryptography Project. It turns out that we can't just safely call `idna.encode`: it can explode for wildcard names. This avoids that problem. r N)z*.�.�ascii)�idna� startswith�len�encode�coreZ IDNAError)�namer1 �prefixr r r � idna_encode� s z'_dnsname_to_stdlib.<locals>.idna_encode�:N)� r zutf-8)�sys� version_info�decode)r6 r8 r r r �_dnsname_to_stdlib� s r> c C s� t | d�r| �� }n tt| j�}y|j�tj�j }W nN tj k rJ g S tj t tj tfk r� } zt�d|� g S d}~X Y nX dd� tt|�tj��D �}|�dd� |�tj�D �� |S )zU Given an PyOpenSSL certificate, provides all the subject alternative names. �to_cryptographyz�A problem was encountered with the certificate that prevented urllib3 from finding the SubjectAlternativeName field. This can affect certificate validation. The error was %sNc S s g | ]}|d k rd|f�qS )NZDNSr )r r6 r r r � <listcomp> s z%get_subj_alt_name.<locals>.<listcomp>c s s | ]}d t |�fV qdS )z IP AddressN)�str)r r6 r r r r s z$get_subj_alt_name.<locals>.<genexpr>)�hasattrr? r �openssl_backendr, � extensionsr* r ZSubjectAlternativeName�valueZExtensionNotFoundZDuplicateExtensionr ZUnsupportedGeneralNameType� UnicodeError�log�warning�mapr> Zget_values_for_typeZDNSName�extendZ IPAddress)Z peer_certZcert�ext�e�namesr r r �get_subj_alt_name� s* rN c @ s� e Zd ZdZd!dd�Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z dd� Z dd� Z d"dd�Zdd� Zd d � Zd d � Zd S )#� WrappedSocketz�API-compatibility wrapper for Python OpenSSL's Connection-class. Note: _makefile_refs, _drop() and _reuse() are needed for the garbage collector of pypy. Tc C s" || _ || _|| _d| _d| _d S )Nr F)� connection�socket�suppress_ragged_eofs�_makefile_refs�_closed)�selfrP rQ rR r r r �__init__ s zWrappedSocket.__init__c C s | j �� S )N)rQ �fileno)rU r r r rW s zWrappedSocket.filenoc C s* | j dkr| j d8 _ | jr&| �� d S )Nr � )rS rT �close)rU r r r �_decref_socketios s z WrappedSocket._decref_socketiosc O s y| j j||�}W n� tjjk rX } z$| jr<|jdkr<dS tt|���W d d }~X Y n� tjj k r� | j � � tjj kr�dS � Y nx tjj k r� t �| j| j�� �s�td��n | j||�S Y n8 tjjk r� } zt�d| ��W d d }~X Y nX |S d S )N)���zUnexpected EOF� z The read operation timed outzread error: %r)rP �recv�OpenSSL�SSL� SysCallErrorrR �args� SocketErrorrA �ZeroReturnError� get_shutdown�RECEIVED_SHUTDOWN� WantReadErrorr � wait_for_readrQ � gettimeoutr �Error�ssl�SSLError)rU ra �kwargs�datarL r r r r] $ s" zWrappedSocket.recvc O s� y| j j||�S tjjk rT } z$| jr8|jdkr8dS tt|���W d d }~X Y n� tjj k r� | j � � tjj kr|dS � Y nt tjj k r� t �| j| j�� �s�td��n | j||�S Y n4 tjjk r� } zt�d| ��W d d }~X Y nX d S )N)r[ zUnexpected EOFr z The read operation timed outzread error: %r)rP � recv_intor^ r_ r` rR ra rb rA rc rd re rf r rg rQ rh r ri rj rk )rU ra rl rL r r r rn = s zWrappedSocket.recv_intoc C s | j �|�S )N)rQ � settimeout)rU r r r r ro T s zWrappedSocket.settimeoutc C s| xvy | j �|�S tjjk rB t�| j| j�� �s<t � �wY q tjj k rr } zt t |���W d d }~X Y qX qW d S )N) rP �sendr^ r_ ZWantWriteErrorr Zwait_for_writerQ rh r r` rb rA )rU rm rL r r r �_send_until_doneW s z WrappedSocket._send_until_donec C s8 d}x.|t |�k r2| �|||t � �}||7 }qW d S )Nr )r3 rq �SSL_WRITE_BLOCKSIZE)rU rm � total_sent�sentr r r �sendallb s zWrappedSocket.sendallc C s | j �� d S )N)rP �shutdown)rU r r r rv j s zWrappedSocket.shutdownc C sH | j dk r6yd| _| j�� S tjjk r2 d S X n| j d8 _ d S )NrX T)rS rT rP rY r^ r_ ri )rU r r r rY n s zWrappedSocket.closeFc C sD | j �� }|s|S |r(tj�tjj|�S d|�� jffft|�d�S )NZ commonName)ZsubjectZsubjectAltName) rP Zget_peer_certificater^ ZcryptoZdump_certificateZ FILETYPE_ASN1Z get_subjectZCNrN )rU Z binary_formr r r r � getpeercertx s zWrappedSocket.getpeercertc C s | j �� S )N)rP Zget_protocol_version_name)rU r r r �version� s zWrappedSocket.versionc C s | j d7 _ d S )NrX )rS )rU r r r �_reuse� s zWrappedSocket._reusec C s& | j dk r| �� n| j d8 _ d S )NrX )rS rY )rU r r r �_drop� s zWrappedSocket._dropN)T)F)r r r �__doc__rV rW rZ r] rn ro rq ru rv rY rw rx ry rz r r r r rO s rO r[ c C s | j d7 _ t| ||dd�S )NrX T)rY )rS r )rU �mode�bufsizer r r �makefile� s r~ c @ s� e Zd ZdZdd� Zedd� �Zejdd� �Zedd� �Zejd d� �Zd d � Z d d � Z ddd�Z ddd�Z dd� Z ddd�ZdS ) r" z� I am a wrapper class for the PyOpenSSL ``Context`` object. I am responsible for translating the interface of the standard library ``SSLContext`` object to calls into PyOpenSSL. c C s* t | | _tj�| j�| _d| _d| _d S )Nr F)�_openssl_versions�protocolr^ r_ ZContext�_ctx�_optionsZcheck_hostname)rU r� r r r rV � s zPyOpenSSLContext.__init__c C s | j S )N)r� )rU r r r �options� s zPyOpenSSLContext.optionsc C s || _ | j�|� d S )N)r� r� � set_options)rU rE r r r r� � s c C s t | j�� S )N)�_openssl_to_stdlib_verifyr� Zget_verify_mode)rU r r r � verify_mode� s z PyOpenSSLContext.verify_modec C s | j �t| t� d S )N)r� Z set_verify�_stdlib_to_openssl_verify�_verify_callback)rU rE r r r r� � s c C s | j �� d S )N)r� �set_default_verify_paths)rU r r r r� � s z)PyOpenSSLContext.set_default_verify_pathsc C s& t |tj�r|�d�}| j�|� d S )Nzutf-8)� isinstancer � text_typer4 r� Zset_cipher_list)rU Zciphersr r r � set_ciphers� s z PyOpenSSLContext.set_ciphersNc C s� |d k r|� d�}|d k r$|� d�}y*| j�||� |d k rL| j�t|�� W n4 tjjk r� } zt�d| ��W d d }~X Y nX d S )Nzutf-8z'unable to load trusted certificates: %r) r4 r� �load_verify_locationsr r^ r_ ri rj rk )rU ZcafileZcapathZcadatarL r r r r� � s z&PyOpenSSLContext.load_verify_locationsc sR | j �|� � d k r>t� tj�s*� �d�� | j �� fdd�� | j �|pJ|� d S )Nzutf-8c s � S )Nr )�_)�passwordr r �<lambda>� r\ z2PyOpenSSLContext.load_cert_chain.<locals>.<lambda>)r� Zuse_certificate_chain_filer� r Z binary_typer4 Z set_passwd_cbZuse_privatekey_file)rU ZcertfileZkeyfiler� r )r� r �load_cert_chain� s z PyOpenSSLContext.load_cert_chainc C s dd� |D �}| j �|�S )Nc S s g | ]}t �|��qS r )r Z ensure_binary)r �pr r r r@ � s z7PyOpenSSLContext.set_alpn_protocols.<locals>.<listcomp>)r� Zset_alpn_protos)rU Z protocolsr r r �set_alpn_protocols� s z#PyOpenSSLContext.set_alpn_protocolsFTc C s� t j�| j|�}t|tj�r&|�d�}|d k r8|�|� |� � xxy |� � W nd t jj k r� t � ||�� �sztd��wBY n4 t jjk r� } zt�d| ��W d d }~X Y nX P qBW t||�S )Nzutf-8zselect timed outzbad handshake: %r)r^ r_ Z Connectionr� r� r r� r4 Zset_tlsext_host_nameZset_connect_stateZ do_handshakerf r rg rh r ri rj rk rO )rU �sockZ server_sideZdo_handshake_on_connectrR Zserver_hostname�cnxrL r r r � wrap_socket� s" z PyOpenSSLContext.wrap_socket)NNN)NN)FTTN)r r r r{ rV �propertyr� �setterr� r� r� r� r� r� r� r r r r r" � s r" c C s |dkS )Nr r )r� r Zerr_noZ err_depthZ return_coder r r r� � s r� )r[ )Mr{ � __future__r Z OpenSSL.SSLr^ Z cryptographyr Z$cryptography.hazmat.backends.opensslr rC Z)cryptography.hazmat.backends.openssl.x509r Zcryptography.x509r r. � Exception�ior rQ r rb r r Zpackages.backports.makefiler �loggingrj r; � r �packagesr Z util.ssl_r �__all__r% Z PROTOCOL_TLSr_ Z SSLv23_METHODZPROTOCOL_TLSv1Z TLSv1_METHODr rB r r r r r r Z CERT_NONEZ VERIFY_NONEZ CERT_OPTIONALZ VERIFY_PEERZ CERT_REQUIREDZVERIFY_FAIL_IF_NO_PEER_CERTr� �dict�itemsr� rr r( r$ r# r' � getLoggerr rG r r r! r> rN �objectrO r~ r" r� r r r r �<module>/ sp +6 ^
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