U
    du                     @   sl  d Z ddlZddlZddlZddlmZ ddlmZ ddlm	Z	 ddl
mZ ddlmZ dd	lmZmZmZmZ dd
lmZmZmZmZ ddlmZmZmZmZ ddlmZmZ ddl m!Z!m"Z"m#Z#m$Z$ ddl%m&Z& ddl'm(Z( ddl)m*Z*m+Z+m,Z,m-Z-m.Z.m/Z/m0Z0m1Z1m2Z2m3Z3 ej4dkr$ej5Z6nejZ6efddZ7efddZ8G dd dZ9G dd de9Z:dd Z;dS )z
requests.sessions
~~~~~~~~~~~~~~~~~

This module provides a Session object to manage and persist settings across
requests (cookies, auth, proxies).
    N)OrderedDict)	timedelta   )to_native_string)HTTPAdapter)_basic_auth_str)Mapping	cookieliburljoinurlparse)RequestsCookieJarcookiejar_from_dictextract_cookies_to_jarmerge_cookies)ChunkedEncodingErrorContentDecodingErrorInvalidSchemaTooManyRedirects)default_hooksdispatch_hook)DEFAULT_REDIRECT_LIMITREDIRECT_STATIPreparedRequestRequest)codes)CaseInsensitiveDict)
DEFAULT_PORTSdefault_headersget_auth_from_urlget_environ_proxiesget_netrc_authrequote_uriresolve_proxiesrewind_bodyshould_bypass_proxiesto_key_val_listZwin32c                 C   sp   |dkr| S | dkr|S t |tr,t | ts0| S |t|}|t|  dd | D }|D ]
}||= q`|S )zDetermines appropriate setting for a given request, taking into account
    the explicit setting on that request, and the setting in the session. If a
    setting is a dictionary, they will be merged together using `dict_class`
    Nc                 S   s   g | ]\}}|d kr|qS N ).0kvr'   r'   0lib/python3.8/site-packages/requests/sessions.py
<listcomp>T   s      z!merge_setting.<locals>.<listcomp>)
isinstancer   r%   updateitems)Zrequest_settingZsession_setting
dict_classZmerged_settingZ	none_keyskeyr'   r'   r+   merge_setting=   s    r2   c                 C   s@   |dks| dg kr| S | dks0|  dg kr4|S t| ||S )zProperly merges both requests and session hooks.

    This is necessary because when request_hooks == {'response': []}, the
    merge breaks Session hooks entirely.
    Nresponse)getr2   )Zrequest_hooksZsession_hooksr0   r'   r'   r+   merge_hooks[   s
    r5   c                   @   s>   e Zd Zdd Zdd Zddd	Zd
d Zdd Zdd ZdS )SessionRedirectMixinc                 C   s(   |j r$|jd }|d}t|dS dS )z7Receives a Response. Returns a redirect URI or ``None``locationlatin1utf8N)Zis_redirectheadersencoder   )selfrespr7   r'   r'   r+   get_redirect_targetk   s
    


z(SessionRedirectMixin.get_redirect_targetc                 C   s   t |}t |}|j|jkr dS |jdkrL|jdkrL|jdkrL|jdkrLdS |j|jk}|j|jk}t|jddf}|s|j|kr|j|krdS |p|S )zFDecide whether Authorization header should be removed when redirectingTZhttp)P   NZhttps)i  NFN)r   ZhostnameschemeZportr   r4   )r<   Zold_urlZnew_urlZ
old_parsedZ
new_parsedZchanged_portZchanged_schemeZdefault_portr'   r'   r+   should_strip_auth   s0    z&SessionRedirectMixin.should_strip_authFNTc	              
   k   sJ  g }
|  |}t|jj}|rF| }|
| |
dd |_z
|j W n( tt	t
fk
rr   |jjdd Y nX t|j| jkrtd| j d|d|  |drt|j}d	t|j|g}t|}|jd
kr|r|j|d}n|jr|j}| }|jst|jt|}nt|}t||_| || |jtjtjfkrrd}|D ]}|j |d qVd|_!|j}| dd t"|j#||j t$|j#| j% |&|j# | '||}| (|| |j)dk	od|kpd|k}|rt*| |}|r|V  q| j+|f|||||dd|	}t"| j%||j |  |}|V  qdS )zBReceives a Response. Returns a generator of Responses or Requests.r   NF)Zdecode_contentz	Exceeded z redirects.)r3   z//: )fragment)Content-LengthzContent-TypeTransfer-EncodingZCookierE   rF   )streamtimeoutverifycertproxiesallow_redirects),r>   r   urlrD   copyappendhistorycontentr   r   RuntimeErrorrawreadlenmax_redirectsr   close
startswithjoinr   r@   _replaceZgeturlZnetlocr
   r!   rebuild_methodstatus_coder   Ztemporary_redirectZpermanent_redirectr:   popZbodyr   Z_cookiesr   cookiesZprepare_cookiesrebuild_proxiesrebuild_authZ_body_positionr#   send)r<   r=   reqrG   rH   rI   rJ   rK   yield_requestsZadapter_kwargsZhistrM   Zprevious_fragmentprepared_requestZparsed_rurlZparsedZpurged_headersheaderr:   Z
rewindabler'   r'   r+   resolve_redirects   s    


 



z&SessionRedirectMixin.resolve_redirectsc                 C   sR   |j }|j}d|kr*| |jj|r*|d= | jr8t|nd}|dk	rN|| dS )zWhen being redirected we may want to strip authentication from the
        request to avoid leaking credentials. This method intelligently removes
        and reapplies authentication where possible to avoid credential loss.
        ZAuthorizationN)r:   rM   rA   request	trust_envr    Zprepare_auth)r<   rd   r3   r:   rM   Znew_authr'   r'   r+   r`     s     z!SessionRedirectMixin.rebuild_authc                 C   sz   |j }t|jj}t||| j}d|kr.|d= zt|| \}}W n tk
r^   d\}}Y nX |rv|rvt|||d< |S )a  This method re-evaluates the proxy configuration by considering the
        environment variables. If we are redirected to a URL covered by
        NO_PROXY, we strip the proxy configuration. Otherwise, we set missing
        proxy keys for this URL (in case they were stripped by a previous
        redirect).

        This method also replaces the Proxy-Authorization header where
        necessary.

        :rtype: dict
        zProxy-Authorization)NN)	r:   r   rM   r@   r"   rh   r   KeyErrorr   )r<   rd   rK   r:   r@   Znew_proxiesZusernameZpasswordr'   r'   r+   r_   /  s    z$SessionRedirectMixin.rebuild_proxiesc                 C   sX   |j }|jtjkr|dkrd}|jtjkr6|dkr6d}|jtjkrN|dkrNd}||_ dS )zWhen being redirected we may want to change the method of the request
        based on certain specs or browser behavior.
        HEADGETPOSTN)methodr\   r   Z	see_otherfoundZmoved)r<   rd   r3   rm   r'   r'   r+   r[   L  s    z#SessionRedirectMixin.rebuild_method)FNTNNF)	__name__
__module____qualname__r>   rA   rf   r`   r_   r[   r'   r'   r'   r+   r6   j   s   $      
|r6   c                   @   s   e Zd ZdZdddddddd	d
dddgZdd Zdd Zdd Zdd Zd6ddZ	dd Z
dd Zdd Zd7d d!Zd8d"d#Zd9d$d%Zd&d' Zd(d) Zd*d+ Zd,d- Zd.d/ Zd0d1 Zd2d3 Zd4d5 ZdS ):Sessiona  A Requests session.

    Provides cookie persistence, connection-pooling, and configuration.

    Basic Usage::

      >>> import requests
      >>> s = requests.Session()
      >>> s.get('https://httpbin.org/get')
      <Response [200]>

    Or as a context manager::

      >>> with requests.Session() as s:
      ...     s.get('https://httpbin.org/get')
      <Response [200]>
    r:   r^   authrK   hooksparamsrI   rJ   adaptersrG   rh   rV   c                 C   sr   t  | _d | _i | _t | _i | _d| _d| _d | _	t
| _d| _ti | _t | _| dt  | dt  d S )NFTzhttps://zhttp://)r   r:   rs   rK   r   rt   ru   rG   rI   rJ   r   rV   rh   r   r^   r   rv   mountr   r<   r'   r'   r+   __init__  s    

zSession.__init__c                 C   s   | S r&   r'   rx   r'   r'   r+   	__enter__  s    zSession.__enter__c                 G   s   |    d S r&   )rW   )r<   argsr'   r'   r+   __exit__  s    zSession.__exit__c                 C   s   |j pi }t|tjst|}ttt | j |}|j}| jrR|sR| jsRt	|j
}t }|j|j |j
|j|j|jt|j| jtdt|j| jt|| j|t|j| jd
 |S )a  Constructs a :class:`PreparedRequest <PreparedRequest>` for
        transmission and returns it. The :class:`PreparedRequest` has settings
        merged from the :class:`Request <Request>` instance and those of the
        :class:`Session`.

        :param request: :class:`Request` instance to prepare with this
            session's settings.
        :rtype: requests.PreparedRequest
        )r0   )
rm   rM   filesdatajsonr:   ru   rs   r^   rt   )r^   r-   r	   Z	CookieJarr   r   r   rs   rh   r    rM   r   Zpreparerm   upperr}   r~   r   r2   r:   r   ru   r5   rt   )r<   rg   r^   Zmerged_cookiesrs   pr'   r'   r+   prepare_request  s8    

 
  
zSession.prepare_requestNTc                 C   st   t | ||||pi ||pi |||d
}| |}|p8i }| |j||||}|	|
d}|| | j|f|}|S )aw	  Constructs a :class:`Request <Request>`, prepares it and sends it.
        Returns :class:`Response <Response>` object.

        :param method: method for the new :class:`Request` object.
        :param url: URL for the new :class:`Request` object.
        :param params: (optional) Dictionary or bytes to be sent in the query
            string for the :class:`Request`.
        :param data: (optional) Dictionary, list of tuples, bytes, or file-like
            object to send in the body of the :class:`Request`.
        :param json: (optional) json to send in the body of the
            :class:`Request`.
        :param headers: (optional) Dictionary of HTTP Headers to send with the
            :class:`Request`.
        :param cookies: (optional) Dict or CookieJar object to send with the
            :class:`Request`.
        :param files: (optional) Dictionary of ``'filename': file-like-objects``
            for multipart encoding upload.
        :param auth: (optional) Auth tuple or callable to enable
            Basic/Digest/Custom HTTP Auth.
        :param timeout: (optional) How long to wait for the server to send
            data before giving up, as a float, or a :ref:`(connect timeout,
            read timeout) <timeouts>` tuple.
        :type timeout: float or tuple
        :param allow_redirects: (optional) Set to True by default.
        :type allow_redirects: bool
        :param proxies: (optional) Dictionary mapping protocol or protocol and
            hostname to the URL of the proxy.
        :param stream: (optional) whether to immediately download the response
            content. Defaults to ``False``.
        :param verify: (optional) Either a boolean, in which case it controls whether we verify
            the server's TLS certificate, or a string, in which case it must be a path
            to a CA bundle to use. Defaults to ``True``. When set to
            ``False``, requests will accept any TLS certificate presented by
            the server, and will ignore hostname mismatches and/or expired
            certificates, which will make your application vulnerable to
            man-in-the-middle (MitM) attacks. Setting verify to ``False``
            may be useful during local development or testing.
        :param cert: (optional) if String, path to ssl client cert file (.pem).
            If Tuple, ('cert', 'key') pair.
        :rtype: requests.Response
        )
rm   rM   r:   r}   r~   r   ru   rs   r^   rt   )rH   rL   )r   r   r   merge_environment_settingsrM   r.   ra   )r<   rm   rM   ru   r~   r:   r^   r}   rs   rH   rL   rK   rt   rG   rI   rJ   r   rb   ZprepZsettingsZsend_kwargsr=   r'   r'   r+   rg     s6    =
    
zSession.requestc                 K   s   | dd | jd|f|S )zSends a GET request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param \*\*kwargs: Optional arguments that ``request`` takes.
        :rtype: requests.Response
        rL   Trk   
setdefaultrg   r<   rM   kwargsr'   r'   r+   r4   O  s    zSession.getc                 K   s   | dd | jd|f|S )zSends a OPTIONS request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param \*\*kwargs: Optional arguments that ``request`` takes.
        :rtype: requests.Response
        rL   TZOPTIONSr   r   r'   r'   r+   optionsZ  s    zSession.optionsc                 K   s   | dd | jd|f|S )zSends a HEAD request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param \*\*kwargs: Optional arguments that ``request`` takes.
        :rtype: requests.Response
        rL   Frj   r   r   r'   r'   r+   heade  s    zSession.headc                 K   s   | j d|f||d|S )a  Sends a POST request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param data: (optional) Dictionary, list of tuples, bytes, or file-like
            object to send in the body of the :class:`Request`.
        :param json: (optional) json to send in the body of the :class:`Request`.
        :param \*\*kwargs: Optional arguments that ``request`` takes.
        :rtype: requests.Response
        rl   )r~   r   rg   )r<   rM   r~   r   r   r'   r'   r+   postp  s    zSession.postc                 K   s   | j d|fd|i|S )au  Sends a PUT request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param data: (optional) Dictionary, list of tuples, bytes, or file-like
            object to send in the body of the :class:`Request`.
        :param \*\*kwargs: Optional arguments that ``request`` takes.
        :rtype: requests.Response
        ZPUTr~   r   r<   rM   r~   r   r'   r'   r+   put}  s    
zSession.putc                 K   s   | j d|fd|i|S )aw  Sends a PATCH request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param data: (optional) Dictionary, list of tuples, bytes, or file-like
            object to send in the body of the :class:`Request`.
        :param \*\*kwargs: Optional arguments that ``request`` takes.
        :rtype: requests.Response
        ZPATCHr~   r   r   r'   r'   r+   patch  s    
zSession.patchc                 K   s   | j d|f|S )zSends a DELETE request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param \*\*kwargs: Optional arguments that ``request`` takes.
        :rtype: requests.Response
        ZDELETEr   r   r'   r'   r+   delete  s    zSession.deletec                 K   s  | d| j | d| j | d| j d|krFt|| j| j|d< t|trXt	d|
dd}|d}|j}| j|jd}t }|j|f|}t | }	t|	d	|_td
||f|}|jr|jD ]}
t| j|
j|
j qt| j||j |r| j||f|}dd |D }ng }|r:|d| |
 }||_|szz"t| j||fddi||_W n tk
rx   Y nX |s|j |S )zISend a given PreparedRequest.

        :rtype: requests.Response
        rG   rI   rJ   rK   z#You can only send PreparedRequests.rL   T)rM   )Zsecondsr3   c                 S   s   g | ]}|qS r'   r'   )r(   r=   r'   r'   r+   r,     s     z Session.send.<locals>.<listcomp>r   rc   )r   rG   rI   rJ   r"   rK   rh   r-   r   
ValueErrorr]   r4   rt   get_adapterrM   preferred_clockra   r   elapsedr   rP   r   r^   rg   rS   rf   insertnextZ_nextStopIterationrQ   )r<   rg   r   rL   rG   rt   adapterstartrr   r=   genrP   r'   r'   r+   ra     sL    




zSession.sendc           
      C   s   | j rr|dk	r|dnd}t||d}| D ]\}}	|||	 q0|dksV|dkrrtjdpptjdpp|}t|| j}t|| j	}t|| j
}t|| j}||||dS )z^
        Check the environment and merge it with some settings.

        :rtype: dict
        Nno_proxy)r   TZREQUESTS_CA_BUNDLEZCURL_CA_BUNDLE)rK   rG   rI   rJ   )rh   r4   r   r/   r   osenvironr2   rK   rG   rI   rJ   )
r<   rM   rK   rG   rI   rJ   r   Zenv_proxiesr)   r*   r'   r'   r+   r     s     
z"Session.merge_environment_settingsc                 C   s@   | j  D ]"\}}| | r
|  S q
td|dS )z~
        Returns the appropriate connection adapter for the given URL.

        :rtype: requests.adapters.BaseAdapter
        z&No connection adapters were found for N)rv   r/   lowerrX   r   )r<   rM   prefixr   r'   r'   r+   r     s    
zSession.get_adapterc                 C   s   | j  D ]}|  q
dS )z+Closes all adapters and as such the sessionN)rv   valuesrW   )r<   r*   r'   r'   r+   rW     s    zSession.closec                    s>   || j  <  fdd| j D }|D ]}| j || j |< q"dS )zwRegisters a connection adapter to a prefix.

        Adapters are sorted in descending order by prefix length.
        c                    s    g | ]}t |t  k r|qS r'   )rU   )r(   r)   r   r'   r+   r,   %  s      z!Session.mount.<locals>.<listcomp>N)rv   r]   )r<   r   r   Zkeys_to_mover1   r'   r   r+   rw     s    
zSession.mountc                    s    fdd j D }|S )Nc                    s   i | ]}|t  |d qS r&   )getattr)r(   attrrx   r'   r+   
<dictcomp>+  s      z(Session.__getstate__.<locals>.<dictcomp>)	__attrs__)r<   stater'   rx   r+   __getstate__*  s    zSession.__getstate__c                 C   s"   |  D ]\}}t| || qd S r&   )r/   setattr)r<   r   r   valuer'   r'   r+   __setstate__.  s    zSession.__setstate__)NNNNNNNTNNNNNN)NN)N)N)ro   rp   rq   __doc__r   ry   rz   r|   r   rg   r4   r   r   r   r   r   r   ra   r   r   rW   rw   r   r   r'   r'   r'   r+   rr   c  s^   >/              
[



Nrr   c                   C   s   t  S )aZ  
    Returns a :class:`Session` for context-management.

    .. deprecated:: 1.0.0

        This method has been deprecated since version 1.0.0 and is only kept for
        backwards compatibility. New code should use :class:`~requests.sessions.Session`
        to create a session. This may be removed at a future date.

    :rtype: Session
    )rr   r'   r'   r'   r+   session3  s    r   )<r   r   systimecollectionsr   Zdatetimer   Z_internal_utilsr   rv   r   rs   r   compatr   r	   r
   r   r^   r   r   r   r   
exceptionsr   r   r   r   rt   r   r   Zmodelsr   r   r   r   Zstatus_codesr   Z
structuresr   Zutilsr   r   r   r   r    r!   r"   r#   r$   r%   platformperf_counterr   r2   r5   r6   rr   r   r'   r'   r'   r+   <module>   s8   0 z   S