Current File : //usr/lib/python3.6/site-packages/pip/_vendor/urllib3/contrib/__pycache__/pyopenssl.cpython-36.pyc
3
�Pf�; � @ s, d Z ddlmZ ddlZddlmZ ddlmZ ddl
m Z ddl m
Z
mZ ddlmZ ydd l mZ W n$ ek
r� dZd
d lmZ Y nX ddlZddlZd
d lmZ ddlZd
d
lm Z ddgZ dZ ej ej j!ej"ej j#iZ$e%ed�o�e%ej d��rej j&e$ej'< e%ed��r0e%ej d��r0ej j(e$ej)< ye$j*ej+ej j,i� W n e-k
�r^ Y nX ej.ej j/ej0ej j1ej2ej j1ej j3 iZ4e5dd� e4j6� D ��Z7dZ8e j Z9e j:j;Z<ej=e>�Z?dd� Z@dd� ZAdd� ZBd d � ZCd d � ZDG d d!� d!eE�ZFe�rd*d#d$�ZGneZGeGeF_GG d%d&� d&eE�ZHd'd(� ZIdS )+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)�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$| jd�} | S )a�
Converts a dNSName SubjectAlternativeName field to the form used by the
standard library on the given Python version.
Cryptography produces a dNSName as a unicode string that was idna-decoded
from ASCII bytes. We need to idna-encode that string to get it back, and
then on Python 3 we also need to convert to unicode via UTF-8 (the stdlib
uses PyUnicode_FromStringAndSize on it, which decodes via UTF-8).
c S sN ddl }x:dD ]2}| j|�r| t|�d� } |jd�|j| � S qW |j| �S )z�
Borrowed wholesale from the Python Cryptography Project. It turns out
that we can't just safely call `idna.encode`: it can explode for
wildcard names. This avoids that problem.
r N�*.�.�ascii)r( r) )�idna�
startswith�len�encode)�namer+ �prefixr r r � idna_encode� s
z'_dnsname_to_stdlib.<locals>.idna_encode� r zutf-8)r2 r )�sys� version_info�decode)r/ r1 r r r �_dnsname_to_stdlib� s
r6 c C s� t | d�r| j� }n tt| j�}y|jjtj�j }W nN tj
k
rJ g S tj tj tj
tfk
r� } ztjd|� g S d}~X nX dd� |jtj�D �}|jdd� |jtj�D �� |S )zU
Given an PyOpenSSL certificate, provides all the subject alternative names.
�to_cryptographyz�A problem was encountered with the certificate that prevented urllib3 from finding the SubjectAlternativeName field. This can affect certificate validation. The error was %sNc S s g | ]}d t |�f�qS )ZDNS)r6 )r r/ r r r �
<listcomp>� s z%get_subj_alt_name.<locals>.<listcomp>c s s | ]}d t |�fV qdS )z
IP AddressN)�str)r r/ r r r r � s z$get_subj_alt_name.<locals>.<genexpr>)�hasattrr7 r �openssl_backendr% �
extensionsr# r ZSubjectAlternativeName�valueZExtensionNotFoundZDuplicateExtensionZUnsupportedExtensionZUnsupportedGeneralNameType� UnicodeError�logZwarningZget_values_for_typeZDNSName�extendZ IPAddress)Z peer_certZcertZext�e�namesr r r �get_subj_alt_name� s(
rC 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 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)�selfrE rF rG r r r �__init__� s
zWrappedSocket.__init__c C s
| j j� S )N)rF �fileno)rJ r r r rL � s zWrappedSocket.filenoc C s* | j dkr| j d8 _ | jr&| j� d S )Nr � )rH rI �close)rJ 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 Y d d }~X n� tjj k
r� } z | j j
� tjj kr�dS � W Y d d }~X nJ tjj k
r� t
j| j| jj� �}|s�td��n | j||�S Y nX |S d S )NrM �Unexpected EOF� z The read operation timed out���)rR rP )rE �recv�OpenSSL�SSL� SysCallErrorrG �args� SocketErrorr9 �ZeroReturnError� get_shutdown�RECEIVED_SHUTDOWN�
WantReadErrorr
�
wait_for_readrF �
gettimeoutr )rJ rW �kwargs�datarA �rdr r r rS s
zWrappedSocket.recvc O s� y| j j||�S tjjk
rT } z&| jr8|jdkr8dS tt|���W Y d d }~X n� tjj k
r� } z | j j
� tjj kr~dS � W Y d d }~X nF tjj k
r� t
j| j| jj� �}|s�td��n | j||�S Y nX d S )NrM �Unexpected EOFr z The read operation timed outrR )rR rb )rE � recv_intorT rU rV rG rW rX r9 rY rZ r[ r\ r
r] rF r^ r )rJ rW r_ rA ra r r r rc s
zWrappedSocket.recv_intoc C s | j j|�S )N)rF �
settimeout)rJ r r r r rd * s zWrappedSocket.settimeoutc C s� xzy | j j|�S tjjk
rF tj| j| jj� �}|s@t � �wY q tjj
k
rv } zt t |���W Y d d }~X qX qW d S )N)
rE �sendrT rU ZWantWriteErrorr
Zwait_for_writerF r^ r rV rX r9 )rJ r` �wrrA r r r �_send_until_done- s z WrappedSocket._send_until_donec C s8 d}x.|t |�k r2| j|||t � �}||7 }qW d S )Nr )r- rg �SSL_WRITE_BLOCKSIZE)rJ r` Z
total_sentZsentr r r �sendall9 s zWrappedSocket.sendallc C s | j j� d S )N)rE �shutdown)rJ r r r rj ? s zWrappedSocket.shutdownc C sH | j dk r6yd| _| jj� S tjjk
r2 d S X n| j d8 _ d S )NrM T)rH rI rE rN rT rU �Error)rJ r r r rN C s
zWrappedSocket.closeFc C sD | j j� }|s|S |r(tjjtjj|�S d|j� jffft|�d�S )NZ
commonName)ZsubjectZsubjectAltName) rE Zget_peer_certificaterT ZcryptoZdump_certificateZ
FILETYPE_ASN1Z get_subjectZCNrC )rJ Z binary_formr r r r � getpeercertM s
zWrappedSocket.getpeercertc C s | j d7 _ d S )NrM )rH )rJ r r r �_reuse_ s zWrappedSocket._reusec C s& | j dk r| j� n| j d8 _ d S )NrM )rH rN )rJ r r r �_dropb s
zWrappedSocket._dropN)T)F)�__name__�
__module__� __qualname__�__doc__rK rL rO rS rc rd rg ri rj rN rl rm rn r r r r rD � s
rD rM c C s | j d7 _ t| ||dd�S )NrM T)rN )rH r )rJ �mode�bufsizer r r �makefilej s ru 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 | | _tjj| j�| _d| _d| _d S )Nr F)�_openssl_versions�protocolrT rU ZContext�_ctx�_optionsZcheck_hostname)rJ rw r r r rK y s
zPyOpenSSLContext.__init__c C s | j S )N)ry )rJ r r r �options s zPyOpenSSLContext.optionsc C s || _ | jj|� d S )N)ry rx Z set_options)rJ r= r r r rz � s c C s t | jj� S )N)�_openssl_to_stdlib_verifyrx Zget_verify_mode)rJ r r r � verify_mode� s z PyOpenSSLContext.verify_modec C s | j jt| t� d S )N)rx Z
set_verify�_stdlib_to_openssl_verify�_verify_callback)rJ r= r r r r| � s c C s | j j� d S )N)rx �set_default_verify_paths)rJ r r r r � s z)PyOpenSSLContext.set_default_verify_pathsc C s& t |tj�r|jd�}| jj|� d S )Nzutf-8)�
isinstancer � text_typer. rx Zset_cipher_list)rJ Zciphersr r r � set_ciphers� s
z PyOpenSSLContext.set_ciphersNc C sN |d k r|j d�}|d k r$|j d�}| jj||� |d k rJ| jjt|�� d S )Nzutf-8)r. rx �load_verify_locationsr )rJ ZcafileZcapathZcadatar r r r� � s
z&PyOpenSSLContext.load_verify_locationsc s< | j j|� � d k r(| j j� fdd�� | j j|p4|� d S )Nc s � S )Nr )Z
max_lengthZ prompt_twiceZuserdata)�passwordr r �<lambda>� s z2PyOpenSSLContext.load_cert_chain.<locals>.<lambda>)rx Zuse_certificate_fileZ
set_passwd_cbZuse_privatekey_file)rJ ZcertfileZkeyfiler� r )r� r �load_cert_chain� s z PyOpenSSLContext.load_cert_chainFTc C s� t jj| j|�}t|tj�r&|jd�}|d k r8|j|� |j � x|y |j
� W nh t jj k
r� t j
||j� �}|s~td��wBY n4 t jjk
r� } ztjd| ��W Y d d }~X nX P qBW t||�S )Nzutf-8zselect timed outzbad handshake: %r)rT rU Z
Connectionrx r� r r� r. Zset_tlsext_host_nameZset_connect_stateZ do_handshaker\ r
r] r^ r rk �sslZSSLErrorrD ) rJ ZsockZ server_sideZdo_handshake_on_connectrG Zserver_hostname�cnxra rA r r r � wrap_socket� s$
z PyOpenSSLContext.wrap_socket)NNN)NN)FTTN)ro rp rq rr rK �propertyrz �setterr| r r� r� r� r� r r r r r s s
r c C s |dkS )Nr r )r� r Zerr_noZ err_depthZ return_coder r r r~ � s r~ rR )rR )Jrr Z
__future__r Z OpenSSL.SSLrT Z cryptographyr Z$cryptography.hazmat.backends.opensslr r; Z)cryptography.hazmat.backends.openssl.x509r rF r r rX �ior r r' Zpackages.backports.makefiler Zloggingr� Zpackagesr r3 � r
�__all__r ZPROTOCOL_SSLv23rU Z
SSLv23_METHODZPROTOCOL_TLSv1Z TLSv1_METHODrv r: r r r r �updateZPROTOCOL_SSLv3Z SSLv3_METHOD�AttributeErrorZ CERT_NONEZ VERIFY_NONEZ
CERT_OPTIONALZ VERIFY_PEERZ
CERT_REQUIREDZVERIFY_FAIL_IF_NO_PEER_CERTr} �dict�itemsr{ rh r! r r r Z getLoggerro r? r r r r6 rC �objectrD ru r r~ r r r r �<module>+ sh
3 S
if you don't want to be vaporized in a nuclear explosion, i simply have to become nuclear myself… i am atomic