U
��.e8@ � @ s\ d Z ddlmZ ddlZddlmZ ddlmZ ddl
m Z zddl m
Z
W n$ ek
rp G dd � d e�Z
Y nX dd
lmZmZ dd lmZ zdd lmZ W n$ ek
r� dZd
dlmZ Y nX ddlZddlZd
dlm Z ddl Z d
dl m Z ddgZ dZ!e j"ej#j$ej%ej#j&iZ'e(ed��r@e(ej#d��r@ej#j)e'ej*< e(ed��rhe(ej#d��rhej#j+e'ej,< e(ed��r�e(ej#d��r�ej#j-e'ej.< ej/ej#j0ej1ej#j2ej3ej#j2ej#j4 iZ5e6dd� e5�7� D ��Z8d Z9e j!Z:e j;j<Z=e�>e?�Z@d d� ZAd d� ZBd d � ZCd!d"� ZDd#d$� ZEG d%d&� d&eF�ZGe�r6d.d(d)�ZHneZHeHeG_HG d*d+� d+eF�ZId,d-� ZJdS )/ab
SSL with SNI_-support for Python 2. Follow these instructions if you would
like to verify SSL 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:
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)�UnsupportedExtensionc @ s e Zd ZdS )r N)�__name__�
__module__� __qualname__� r
r
�I/usr/lib/python3.8/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.pyr 7 s r )�timeout�error)�BytesIO)� _fileobject� )�backport_makefile)�six)�util�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>g 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 s 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 sv ddl m} zJdD ]8}| �|�r| t|�d� } |�d�|�| � W S q|�| �W S |jjk
rp Y 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 )�idna)z*.�.N�ascii)Z pip._vendorr/ �
startswith�len�encodeZcoreZ IDNAError)�namer/ �prefixr
r
r � idna_encode� s
z'_dnsname_to_stdlib.<locals>.idna_encode�:N)� r �utf-8)�sys� version_info�decode)r5 r7 r
r
r �_dnsname_to_stdlib� s
r> c C s� t | d�r| �� }n tt| j�}z|j�tj�j }W nZ tj
k
rN g Y S tj t tj
tfk
r� } zt�d|� g W Y �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 r5 r
r
r �
<listcomp>� s �z%get_subj_alt_name.<locals>.<listcomp>c s s | ]}d t |�fV qdS )z
IP AddressN)�strr@ r
r
r r � s z$get_subj_alt_name.<locals>.<genexpr>)�hasattrr? r �openssl_backendr, �
extensionsr* r ZSubjectAlternativeName�valueZExtensionNotFoundZDuplicateExtensionr ZUnsupportedGeneralNameType� UnicodeError�logZwarning�mapr> Zget_values_for_typeZDNSName�extendZ IPAddress)Z peer_certZcertZext�e�namesr
r
r �get_subj_alt_name� s2
�� �
�rM 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 r )rQ �fileno�rU r
r
r rW s zWrappedSocket.filenoc C s* | j dkr| j d8 _ | jr&| �� d S )Nr � )rS rT �closerX r
r
r �_decref_socketios s
z WrappedSocket._decref_socketiosc
O s z| j j||�}W n� tjjk
r^ } z*| jrB|jdkrBW Y �dS tt|���W 5 d }~X Y n� tjj k
r� | j �
� tjj kr�Y dS � Y n~ tjj k
r� t
�| j| j�� �s�td��n| j||� Y S Y n: tjjk
�r } zt�d| ��W 5 d }~X Y nX |S d S )N����zUnexpected EOF� � The read operation timed out�read error: %r)rP �recv�OpenSSL�SSL� SysCallErrorrR �args� SocketErrorrB �ZeroReturnError� get_shutdown�RECEIVED_SHUTDOWN�
WantReadErrorr �
wait_for_readrQ �
gettimeoutr �Error�ssl�SSLError)rU re �kwargs�datarK r
r
r ra s"
zWrappedSocket.recvc
O s
z| j j||�W S tjjk
r\ } z*| jr@|jdkr@W Y �dS tt|���W 5 d }~X Y n� tjj k
r� | j �
� tjj kr�Y dS � Y nz tjj k
r� t
�| j| j�� �s�td��n| j||� Y S Y n6 tjjk
�r } zt�d| ��W 5 d }~X Y nX d S )Nr\ r r_ r` )rP � recv_intorb rc rd rR re rf rB rg rh ri rj r rk rQ rl r rm rn ro )rU re rp rK r
r
r rr 7 s
zWrappedSocket.recv_intoc C s | j �|�S r )rQ �
settimeout)rU r r
r
r rs N s zWrappedSocket.settimeoutc
C s| z| j �|�W S tjjk
rD t�| j| j�� �s<t � �Y q Y q tjj
k
rt } zt t |���W 5 d }~X Y q X q d S r )
rP �sendrb rc ZWantWriteErrorr Zwait_for_writerQ rl r rd rf rB )rU rq rK r
r
r �_send_until_doneQ s z WrappedSocket._send_until_donec C s4 d}|t |�k r0| �|||t � �}||7 }qd S �Nr )r3 ru �SSL_WRITE_BLOCKSIZE)rU rq Z
total_sentZsentr
r
r �sendall\ s �zWrappedSocket.sendallc C s | j �� d S r )rP �shutdownrX r
r
r ry d s zWrappedSocket.shutdownc C sL | j dk r:zd| _| j�� W S tjjk
r6 Y d S X n| j d8 _ d S )NrY T)rS rT rP rZ rb rc rm rX r
r
r rZ h s
zWrappedSocket.closeFc C sD | j �� }|s|S |r(tj�tjj|�S d|�� jffft|�d�S )NZ
commonName)ZsubjectZsubjectAltName) rP Zget_peer_certificaterb ZcryptoZdump_certificateZ
FILETYPE_ASN1Z get_subjectZCNrM )rU Z binary_formr r
r
r � getpeercertr s
�zWrappedSocket.getpeercertc C s
| j �� S r )rP Zget_protocol_version_namerX r
r
r �version� s zWrappedSocket.versionc C s | j d7 _ d S �NrY )rS rX r
r
r �_reuse� s zWrappedSocket._reusec C s& | j dk r| �� n| j d8 _ d S r| )rS rZ rX r
r
r �_drop� s
zWrappedSocket._dropN)T)F)r r r �__doc__rV rW r[ ra rr rs ru rx ry rZ rz r{ r} r~ r
r
r
r rN s
rN r] c C s | j d7 _ t| ||dd�S )NrY T)rZ )rS r )rU �mode�bufsizer
r
r �makefile� s r� c @ sz e Zd ZdZdd� Zedd� �Zejdd� �Zedd� �Zejd d� �Zd
d � Z d d
� Z
ddd�Z ddd�Z ddd�Z
dS )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 rO )�_openssl_versions�protocolrb rc ZContext�_ctx�_optionsZcheck_hostname)rU r� r
r
r rV � s
zPyOpenSSLContext.__init__c C s | j S r )r� rX r
r
r �options� s zPyOpenSSLContext.optionsc C s || _ | j�|� d S r )r� r� Z set_options�rU rF r
r
r r� � s c C s t | j�� S r )�_openssl_to_stdlib_verifyr� Zget_verify_moderX 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_pathsrX r
r
r r� � s z)PyOpenSSLContext.set_default_verify_pathsc C s& t |tj�r|�d�}| j�|� d S �Nr: )�
isinstancer � text_typer4 r� Zset_cipher_list)rU Zciphersr
r
r � set_ciphers� s
z PyOpenSSLContext.set_ciphersNc C sN |d k r|� d�}|d k r$|� d�}| j�||� |d k rJ| j�t|�� d S r� )r4 r� �load_verify_locationsr )rU ZcafileZcapathZcadatar
r
r r� � s
z&PyOpenSSLContext.load_verify_locationsc sR | j �|� � d k r>t� tj�s*� �d�� | j �� fdd�� | j �|pJ|� d S )Nr: c s � S r r
)�_��passwordr
r �<lambda>� r^ z2PyOpenSSLContext.load_cert_chain.<locals>.<lambda>)r� Zuse_certificate_chain_filer� r Z binary_typer4 Z
set_passwd_cbZuse_privatekey_file)rU ZcertfileZkeyfiler� r
r� r �load_cert_chain� s
z PyOpenSSLContext.load_cert_chainFTc
C s� t j�| j|�}t|tj�r&|�d�}|d k r8|�|� |� � z |�
� W q� t jj k
r� t �
||�� �sxtd��Y q@Y q� t jjk
r� } zt�d| ��W 5 d }~X Y q�X q�q@t||�S )Nr: zselect timed outzbad handshake: %r)rb rc Z
Connectionr� r� r r� r4 Zset_tlsext_host_nameZset_connect_stateZ do_handshakerj r rk rl r rm rn ro rN )rU ZsockZ server_sideZdo_handshake_on_connectrR Zserver_hostname�cnxrK r
r
r � wrap_socket� s
z PyOpenSSLContext.wrap_socket)NNN)NN)FTTN)r r r r rV �propertyr� �setterr� r� r� r� r� r� r
r
r
r r" � s&
�r" c C s |dkS rv r
)r� r Zerr_noZ err_depthZ return_coder
r
r r� � s r� )r] )Kr Z
__future__r Z OpenSSL.SSLrb Z cryptographyr Z$cryptography.hazmat.backends.opensslr rD Z)cryptography.hazmat.backends.openssl.x509r Zcryptography.x509r r. � ExceptionrQ r r
rf �ior r Zpackages.backports.makefiler Zloggingrn Zpackagesr r; � r �__all__r% Z PROTOCOL_TLSrc Z
SSLv23_METHODZPROTOCOL_TLSv1Z TLSv1_METHODr� rC r r r r r r Z CERT_NONEZ VERIFY_NONEZ
CERT_OPTIONALZ VERIFY_PEERZ
CERT_REQUIREDZVERIFY_FAIL_IF_NO_PEER_CERTr� �dict�itemsr� rw r( r$ r# r' Z getLoggerr rH r r r! r> rM �objectrN r� r" r� r
r
r
r �<module> sz + � ��
+6 W |