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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 pip._vendor.urllib3.contrib.pyopenssl as pyopenssl
        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)UnsupportedExtensionc                   @   s   e Zd ZdS )r   N)__name__
__module____qualname__ r	   r	   ^/var/www/ai-form-bot/venv/lib/python3.9/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.pyr   ;   s   r   )BytesIO)error)timeout)_fileobject   )backport_makefile)util)six)PROTOCOL_TLS_CLIENTz'urllib3.contrib.pyopenssl' module is deprecated and will be removed in a future release of urllib3 2.x. Read more in this issue: https://github.com/urllib3/urllib3/issues/2680)category
stacklevelinject_into_urllib3extract_from_urllib3TPROTOCOL_SSLv3SSLv3_METHODPROTOCOL_TLSv1_1TLSv1_1_METHODPROTOCOL_TLSv1_2TLSv1_2_METHODc                 c   s   | ]\}}||fV  qd S Nr	   ).0kvr	   r	   r
   	<genexpr>v       r"   i @  c                   C   s4   t   tt_ttj_tt_ttj_dt_dtj_dS )z7Monkey-patch urllib3 with PyOpenSSL-backed SSL-support.TN)_validate_dependencies_metPyOpenSSLContextr   
SSLContextssl_HAS_SNIIS_PYOPENSSLr	   r	   r	   r
   r      s    c                   C   s.   t t_t tj_tt_ttj_dt_dtj_dS )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   ddl m}  t| dddu r$tdddlm} | }t|dddu rNtddS )	z{
    Verifies that PyOpenSSL's package-level dependencies have been met.
    Throws `ImportError` if they are not met.
    r   )
Extensionsget_extension_for_classNzX'cryptography' module missing required functionality.  Try upgrading to v1.3.4 or newer.)X509Z_x509zS'pyOpenSSL' module missing required functionality. Try upgrading to v0.14 or newer.)Zcryptography.x509.extensionsr,   getattrImportErrorOpenSSL.cryptor.   )r,   r.   r   r	   r	   r
   r$      s    r$   c                 C   s@   dd }d| v r| S || } | du r(dS t jdkr<| 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   st   ddl m} zJdD ]8}| |r| t|d } |d||    W S q|| W S  |jjyn   Y dS 0 dS )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   )idna)z*..Nascii)pip._vendorr2   
startswithlenencodecore	IDNAError)namer2   prefixr	   r	   r
   idna_encode   s    
z'_dnsname_to_stdlib.<locals>.idna_encode:N)   r   utf-8)sysversion_infodecode)r;   r=   r	   r	   r
   _dnsname_to_stdlib   s    

rD   c                 C   s   t | dr|  }ntjtjj| }t|t}z|j	
tjj}W nV tjy^   g  Y S  tjttjtfy } ztd| g W  Y d}~S d}~0 0 dd tt|tjD }|dd |tjD  |S )zU
    Given an PyOpenSSL certificate, provides all the subject alternative names.
    to_cryptographyzA 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 urd|fqS )NDNSr	   r   r;   r	   r	   r
   
<listcomp>  s   z%get_subj_alt_name.<locals>.<listcomp>c                 s   s   | ]}d t |fV  qdS )z
IP AddressN)strrG   r	   r	   r
   r"     s   z$get_subj_alt_name.<locals>.<genexpr>)hasattrrE   OpenSSLcryptodump_certificateFILETYPE_ASN1r   Zload_der_x509_certificateopenssl_backend
extensionsr-   ZSubjectAlternativeNamevalueZExtensionNotFoundZDuplicateExtensionr   ZUnsupportedGeneralNameTypeUnicodeErrorlogwarningmaprD   Zget_values_for_typeZDNSNameextendZ	IPAddress)Z	peer_certcertZderextenamesr	   r	   r
   get_subj_alt_name   s4    

	

r[   c                   @   s   e Zd ZdZd!ddZdd Zdd Zd	d
 Zdd Zdd Z	dd Z
dd Zdd Zdd Zd"ddZdd Zdd Zdd Zd S )#WrappedSocketzAPI-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)selfr^   r_   r`   r	   r	   r
   __init__  s
    zWrappedSocket.__init__c                 C   s
   | j  S r   )r_   filenorc   r	   r	   r
   re   "  s    zWrappedSocket.filenoc                 C   s*   | j dkr|  j d8  _ | jr&|   d S )Nr      )ra   rb   closerf   r	   r	   r
   _decref_socketios&  s    
zWrappedSocket._decref_socketiosc              
   O   s  z| j j|i |}W  n tjjyj } z6| jrJ|jdkrJW Y d }~dS tt|W Y d }~nd }~0  tjj	y   | j 
 tjjkrY dS  Y n tjjy   t| j| j stdn| j|i | Y S Y n< tjjy } ztd| W Y d }~nd }~0 0 |S d S )NzUnexpected EOFr#   The read operation timed outread error: %r)r^   recvrK   SSLSysCallErrorr`   argsSocketErrorrI   ZeroReturnErrorget_shutdownRECEIVED_SHUTDOWNWantReadErrorr   wait_for_readr_   
gettimeoutr   ErrorsslSSLError)rc   rq   kwargsdatarY   r	   r	   r
   rn   ,  s"     
$zWrappedSocket.recvc              
   O   s  z| j j|i |W S  tjjyf } z6| jrF|jdkrFW Y d }~dS tt|W Y d }~nd }~0  tjj	y   | j 
 tjjkrY dS  Y n~ tjjy   t| j| j stdn| j|i | Y S Y n8 tjjy } ztd| W Y d }~n
d }~0 0 d S )Nrj   r   rl   rm   )r^   	recv_intorK   ro   rp   r`   rq   rr   rI   rs   rt   ru   rv   r   rw   r_   rx   r   ry   rz   r{   )rc   rq   r|   rY   r	   r	   r
   r~   E  s      
zWrappedSocket.recv_intoc                 C   s   | j |S r   )r_   
settimeout)rc   r   r	   r	   r
   r   \  s    zWrappedSocket.settimeoutc              
   C   s|   z| j |W S  tjjyB   t| j| j s:t	 Y q Y q  tjj
yt } ztt|W Y d }~q d }~0 0 q d S r   )r^   sendrK   ro   ZWantWriteErrorr   wait_for_writer_   rx   r   rp   rr   rI   )rc   r}   rY   r	   r	   r
   _send_until_done_  s    zWrappedSocket._send_until_donec                 C   s4   d}|t |k r0| |||t  }||7 }qd S Nr   )r7   r   SSL_WRITE_BLOCKSIZE)rc   r}   
total_sentsentr	   r	   r
   sendallj  s    zWrappedSocket.sendallc                 C   s   | j   d S r   )r^   shutdownrf   r	   r	   r
   r   r  s    zWrappedSocket.shutdownc                 C   sJ   | j dk r8zd| _| j W S  tjjy4   Y d S 0 n|  j d8  _ d S )Nrg   T)ra   rb   r^   rh   rK   ro   ry   rf   r	   r	   r
   rh   v  s    

zWrappedSocket.closeFc                 C   sD   | j  }|s|S |r(tjtjj|S d| jffft|dS )N
commonName)subjectsubjectAltName)	r^   Zget_peer_certificaterK   rL   rM   rN   Zget_subjectZCNr[   )rc   binary_formr   r	   r	   r
   getpeercert  s    
zWrappedSocket.getpeercertc                 C   s
   | j  S r   )r^   Zget_protocol_version_namerf   r	   r	   r
   version  s    zWrappedSocket.versionc                 C   s   |  j d7  _ d S Nrg   )ra   rf   r	   r	   r
   _reuse  s    zWrappedSocket._reusec                 C   s&   | j dk r|   n|  j d8  _ d S r   )ra   rh   rf   r	   r	   r
   _drop  s    

zWrappedSocket._dropN)T)F)r   r   r   __doc__rd   re   ri   rn   r~   r   r   r   r   rh   r   r   r   r   r	   r	   r	   r
   r\     s   


r\   rk   c                 C   s   |  j d7  _ t| ||ddS )Nrg   T)rh   )ra   r   )rc   modebufsizer	   r	   r
   makefile  s    r   c                   @   s   e Zd ZdZdd Zedd Zejdd Zedd Zejd	d Zd
d Z	dd Z
dddZdddZdd ZdddZdS )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 | | _tj| j| _d| _d| _d S r]   )_openssl_versionsprotocolrK   ro   Context_ctx_optionscheck_hostname)rc   r   r	   r	   r
   rd     s    
zPyOpenSSLContext.__init__c                 C   s   | j S r   )r   rf   r	   r	   r
   options  s    zPyOpenSSLContext.optionsc                 C   s   || _ | j| d S r   )r   r   Zset_optionsrc   rQ   r	   r	   r
   r     s    c                 C   s   t | j  S r   )_openssl_to_stdlib_verifyr   Zget_verify_moderf   r	   r	   r
   verify_mode  s    zPyOpenSSLContext.verify_modec                 C   s   | j t| t d S r   )r   Z
set_verify_stdlib_to_openssl_verify_verify_callbackr   r	   r	   r
   r     s    c                 C   s   | j   d S r   )r   set_default_verify_pathsrf   r	   r	   r
   r     s    z)PyOpenSSLContext.set_default_verify_pathsc                 C   s&   t |tjr|d}| j| d S )Nr@   )
isinstancer   	text_typer8   r   Zset_cipher_list)rc   ciphersr	   r	   r
   set_ciphers  s    
zPyOpenSSLContext.set_ciphersNc              
   C   s   |d ur| d}|d ur$| d}z*| j|| |d urL| jt| W n6 tjjy } ztd| W Y d }~n
d }~0 0 d S )Nr@   z'unable to load trusted certificates: %r)	r8   r   load_verify_locationsr   rK   ro   ry   rz   r{   )rc   cafilecapathcadatarY   r	   r	   r
   r     s    

z&PyOpenSSLContext.load_verify_locationsc                    sR   | j |  d ur>t tjs* d | j  fdd | j |pJ| d S )Nr@   c                     s    S r   r	   )_passwordr	   r
   <lambda>  r#   z2PyOpenSSLContext.load_cert_chain.<locals>.<lambda>)r   Zuse_certificate_chain_filer   r   binary_typer8   Zset_passwd_cbZuse_privatekey_file)rc   certfilekeyfiler   r	   r   r
   load_cert_chain  s    
z PyOpenSSLContext.load_cert_chainc                 C   s   dd |D }| j |S )Nc                 S   s   g | ]}t |qS r	   )r   ensure_binary)r   pr	   r	   r
   rH     r#   z7PyOpenSSLContext.set_alpn_protocols.<locals>.<listcomp>)r   Zset_alpn_protos)rc   	protocolsr	   r	   r
   set_alpn_protocols  s    z#PyOpenSSLContext.set_alpn_protocolsFTc              
   C   s   t j| j|}t|tjr&|d}|d ur8|| |	  z|
  W q t jjy~   t|| svtdY q@Y q t jjy } ztd| W Y d }~qd }~0 0 qq@t||S )Nr@   zselect timed outzbad handshake: %r)rK   ro   
Connectionr   r   r   r   r8   Zset_tlsext_host_nameZset_connect_statedo_handshakerv   r   rw   rx   r   ry   rz   r{   r\   )rc   sockserver_sidedo_handshake_on_connectr`   server_hostnamecnxrY   r	   r	   r
   wrap_socket  s     

$zPyOpenSSLContext.wrap_socket)NNN)NN)FTTN)r   r   r   r   rd   propertyr   setterr   r   r   r   r   r   r   r	   r	   r	   r
   r%     s(   





    r%   c                 C   s   |dkS r   r	   )r   r   Zerr_noZ	err_depthZreturn_coder	   r	   r
   r     s    r   )rk   )Or   
__future__r   r1   rK   ZOpenSSL.SSLZcryptographyr   Z$cryptography.hazmat.backends.opensslr   rO   Zcryptography.x509r   r0   	Exceptionior   r_   r   rr   r   r   Zpackages.backports.makefiler   loggingrz   rA   warnings r   packagesr   Z	util.ssl_r   warnDeprecationWarning__all__r(   PROTOCOL_TLSro   ZSSLv23_METHODPROTOCOL_TLSv1ZTLSv1_METHODr   rJ   r   r   r   r   r   r   	CERT_NONEZVERIFY_NONECERT_OPTIONALZVERIFY_PEERCERT_REQUIREDZVERIFY_FAIL_IF_NO_PEER_CERTr   dictitemsr   r   r+   r'   r&   r*   	getLoggerr   rS   r   r   r$   rD   r[   objectr\   r   r%   r   r	   r	   r	   r
   <module>   s   /





+5 ^