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a ^�h�. � @ s� d Z ddlZddlZddlZddlZddlZddlZddlZddlm Z m Z m Z e� dej �Zdd� Zdd � Zd d � Zdd d �Zdd� Zdd� Zdd� Zdd� Zdd� Zdd� ZdS )a� Low-level helpers for the SecureTransport bindings. These are Python functions that are not directly related to the high-level APIs but are necessary to get them to work. They include a whole bunch of low-level CoreFoundation messing about and memory management. The concerns in this module are almost entirely about trying to avoid memory leaks and providing appropriate and useful assistance to the higher-level code. � N� )�Security�CoreFoundation�CFConsts; -----BEGIN CERTIFICATE----- (.*?) -----END CERTIFICATE-----c C s t �t j| t| ��S )zv Given a bytestring, create a CFData object from it. This CFData object must be CFReleased by the caller. )r � CFDataCreate�kCFAllocatorDefault�len)� bytestring� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/urllib3/contrib/_securetransport/low_level.py�_cf_data_from_bytes s �r c C sZ t | �}dd� | D �}dd� | D �}tj| |� }tj| |� }t�tj|||tjtj�S )zK Given a list of Python tuples, create an associated CFDictionary. c s s | ]}|d V qdS )r Nr ��.0�tr r r � <genexpr>, � z-_cf_dictionary_from_tuples.<locals>.<genexpr>c s s | ]}|d V qdS )r Nr r r r r r - r )r r � CFTypeRefZCFDictionaryCreater Z kCFTypeDictionaryKeyCallBacksZ kCFTypeDictionaryValueCallBacks)ZtuplesZdictionary_size�keys�valuesZcf_keysZ cf_valuesr r r �_cf_dictionary_from_tuples% s �r c C sn t �| t �t j��}t�|tj�}|du rXt �d�}t� ||dtj�}|sRt d��|j }|durj|� d�}|S )z� Creates a Unicode string from a CFString object. Used entirely for error reporting. Yes, it annoys me quite a lot that this function is this complex. Ni z'Error copying C string from CFStringRef�utf-8) �ctypes�castZPOINTERZc_void_pr ZCFStringGetCStringPtrr ZkCFStringEncodingUTF8Zcreate_string_bufferZCFStringGetCString�OSError�value�decode)r Zvalue_as_void_p�string�buffer�resultr r r �_cf_string_to_unicode; s � � r c C s\ | dkr dS t �| d�}t|�}t�|� |du s:|dkrBd| }|du rPtj}||��dS )z[ Checks the return code and throws an exception if there is an error to report r N� z OSStatus %s)r ZSecCopyErrorMessageStringr r � CFRelease�ssl�SSLError)�errorZexception_classZcf_error_string�outputr r r �_assert_no_errorT s r& c C s� | � dd�} dd� t�| �D �}|s.t�d��t�tjdt� tj ��}|sTt�d��z`|D ]V}t |�}|stt�d��t � tj|�}t�|� |s�t�d��t�||� t�|� qZW n ty� t�|� Y n0 |S ) z� Given a bundle of certs in PEM format, turns them into a CFArray of certs that can be used to validate a cert chain. s � c S s g | ]}t �|�d ���qS )r )�base64� b64decode�group)r �matchr r r � <listcomp>q s z(_cert_array_from_pem.<locals>.<listcomp>z No root certificates specifiedr zUnable to allocate memory!z Unable to build cert object!)�replace� _PEM_CERTS_RE�finditerr" r# r �CFArrayCreateMutabler r �byref�kCFTypeArrayCallBacksr r Z SecCertificateCreateWithDatar! �CFArrayAppendValue� Exception)Z pem_bundleZ der_certsZ cert_arrayZ der_bytesZcertdata�certr r r �_cert_array_from_pemi s: � � � r6 c C s t �� }t�| �|kS )z= Returns True if a given CFTypeRef is a certificate. )r ZSecCertificateGetTypeIDr � CFGetTypeID��item�expectedr r r �_is_cert� s r; c C s t �� }t�| �|kS )z; Returns True if a given CFTypeRef is an identity. )r ZSecIdentityGetTypeIDr r7 r8 r r r � _is_identity� s r< c C s� t �d�} t�| dd� ��d�}t�| dd� �}t�� }t j�||�� d�}t � � }t � |t |�|ddt�|��}t|� ||fS )a� This function creates a temporary Mac keychain that we can use to work with credentials. This keychain uses a one-time password and a temporary file to store the data. We expect to have one keychain per socket. The returned SecKeychainRef must be freed by the caller, including calling SecKeychainDelete. Returns a tuple of the SecKeychainRef and the path to the temporary directory that contains it. �( N� r F)�os�urandomr( � b16encoder �tempfile�mkdtemp�path�join�encoder ZSecKeychainRefZSecKeychainCreater r r1 r& )Z random_bytes�filename�passwordZ tempdirectoryZ keychain_path�keychain�statusr r r �_temporary_keychain� s �rK c C s. g }g }d}t |d��}|�� }W d � n1 s40 Y z�t�tj|t|��}t�� }t�|ddddd| t � |��}t |� t� |�} t | �D ]X} t�|| �} t �| tj�} t| �r�t�| � |�| � q�t| �r�t�| � |�| � q�W |r�t�|� t�|� n |�rt�|� t�|� 0 ||fS )z� Given a single file, loads all the trust objects from it into arrays and the keychain. Returns a tuple of lists: the first list is a list of identities, the second a list of certs. N�rbr )�open�readr r r r Z CFArrayRefr Z SecItemImportr r1 r& ZCFArrayGetCount�rangeZCFArrayGetValueAtIndexr r r; ZCFRetain�appendr< r! ) rI rD � certificates� identitiesZ result_array�fZ raw_filedataZfiledatar Z result_count�indexr9 r r r �_load_items_from_file� sL & �� � rU c G s g }g }dd� |D �}z�|D ]&}t | |�\}}|�|� |�|� q |s�t�� }t�| |d t�|��}t|� |�|� t � |� d�� t � t j dt�t j��} t�||�D ]} t �| | � q�| W t�||�D ]} t � | � q�S ]} t � | � q�n t�||�D ]} t � | � �q 0 dS )z� Load certificates and maybe keys from a number of files. Has the end goal of returning a CFArray containing one SecIdentityRef, and then zero or more SecCertificateRef objects, suitable for use as a client certificate trust chain. c s s | ]}|r|V qd S )Nr )r rD r r r r $ r z*_load_client_cert_chain.<locals>.<genexpr>r N)rU �extendr ZSecIdentityRefZ SecIdentityCreateWithCertificater r1 r& rP r r! �popr0 r r2 � itertools�chainr3 ) rI �pathsrQ rR � file_pathZnew_identitiesZ new_certsZ new_identityrJ Z trust_chainr9 �objr r r �_load_client_cert_chain s> � � ��r] )N)�__doc__r( r rX �rer? r" rB Zbindingsr r r �compile�DOTALLr. r r r r& r6 r; r< rK rU r] r r r r �<module> s* � -#7
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