B
    4\r                 @   s  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	m
Z
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 dd	lmZmZ dd
lmZ ddlmZ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/ ddl0m1Z1 ddlm2Z2 ej3dkrNy
ej4Z5W n e6k
rJ   ej7Z5Y nX nejZ5efddZ8efddZ9G dd de:Z;G dd de;Z<dd Z=dS )z
requests.session
~~~~~~~~~~~~~~~~

This module provides a Session object to manage and persist settings across
requests (cookies, auth, proxies).
    N)	timedelta   )_basic_auth_str)	cookielibis_py3OrderedDicturljoinurlparseMapping)cookiejar_from_dictextract_cookies_to_jarRequestsCookieJarmerge_cookies)RequestPreparedRequestDEFAULT_REDIRECT_LIMIT)default_hooksdispatch_hook)to_native_string)to_key_val_listdefault_headersDEFAULT_PORTS)TooManyRedirectsInvalidSchemaChunkedEncodingErrorContentDecodingError)CaseInsensitiveDict)HTTPAdapter)requote_uriget_environ_proxiesget_netrc_authshould_bypass_proxiesget_auth_from_urlrewind_body)codes)REDIRECT_STATIwin32c             C   st   |dkr| S | dkr|S t |tr,t | ts0| S |t|}|t|  dd | D }x|D ]
}||= qbW |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/python3.7/site-packages/requests/sessions.py
<listcomp>I   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_setting1   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_hooksP   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 }tr|d}t|dS dS )z7Receives a Response. Returns a redirect URI or ``None``locationlatin1utf8N)Zis_redirectheadersr   encoder   )selfrespr7   r'   r'   r+   get_redirect_targeta   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_authv   s    
z&SessionRedirectMixin.should_strip_authFNTc	          
   k   sd  g }
|  |}t|jj}xB|r^| }|
| |
dd |_y
|j W n( tt	t
fk
rv   |jjdd Y nX t|j| jkrtd| j |d|  |drt|j}dt|j|f }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rtd}x|D ]}|j|d qVW d|_ |j}y
|d= W n t!k
r   Y nX t"|j#||j t$|j#| j% |&|j# | '||}| (|| |j)dk	od|kpd|k}|r
t*| |}|r|V  q| j+|f|||||dd|	}t"| j%||j |  |}|V  qW dS )zBReceives a Response. Returns a generator of Responses or Requests.r   NF)Zdecode_contentzExceeded %s redirects.)r3   z//z%s:%s )fragment)zContent-LengthzContent-TypezTransfer-EncodingZCookiezContent-LengthzTransfer-Encoding)streamtimeoutverifycertproxiesallow_redirects),r>   r	   urlrC   copyappendhistorycontentr   r   RuntimeErrorrawreadlenmax_redirectsr   close
startswithr   r@   _replaceZgeturlZnetlocr   r   rebuild_methodstatus_coder$   Ztemporary_redirectZpermanent_redirectr:   popZbodyKeyErrorr   Z_cookiesr   cookiesZprepare_cookiesrebuild_proxiesrebuild_authZ_body_positionr#   send)r<   r=   reqrD   rE   rF   rG   rH   yield_requestsZadapter_kwargsZhistrJ   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:   rJ   rA   request	trust_envr    Zprepare_auth)r<   ra   r3   r:   rJ   Znew_authr'   r'   r+   r]      s    
z!SessionRedirectMixin.rebuild_authc             C   s   |dk	r|ni }|j }|j}t|j}| }|d}t||d}| jr||s|t||d}	|	||	d}
|
r||	||
 d|kr|d= yt
|| \}}W n tk
r   d\}}Y nX |r|rt|||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
        Nno_proxy)rf   allzProxy-Authorization)NN)r:   rJ   r	   r@   rK   r4   r!   re   r   
setdefaultr"   rZ   r   )r<   ra   rH   r:   rJ   r@   Znew_proxiesrf   Zbypass_proxyZenviron_proxiesproxyZusernameZpasswordr'   r'   r+   r\     s*    


z$SessionRedirectMixin.rebuild_proxiesc             C   sX   |j }|jtjkr|dkrd}|jtjkr6|dkr6d}|jtjkrN|dkrNd}||_ dS )zWhen being redirected we may want to change the method of the request
        based on certain specs or browser behavior.
        HEADGETPOSTN)methodrX   r$   Z	see_otherfoundZmoved)r<   ra   r3   rm   r'   r'   r+   rW   =  s    z#SessionRedirectMixin.rebuild_method)FNTNNF)	__name__
__module____qualname__r>   rA   rc   r]   r\   rW   r'   r'   r'   r+   r6   _   s    
p)r6   c               @   s   e Zd ZdZd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d7ddZ	dd Z
dd Zdd  Zd8d!d"Zd9d#d$Zd:d%d&Zd'd( Zd)d* Zd+d, Zd-d. Zd/d0 Zd1d2 Zd3d4 Zd5d6 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[   authrH   hooksparamsrF   rG   ZprefetchadaptersrD   re   rS   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   rH   r   rt   ru   rD   rF   rG   r   rS   re   r   r[   r   rv   mountr   )r<   r'   r'   r+   __init__m  s    
zSession.__init__c             C   s   | S )Nr'   )r<   r'   r'   r+   	__enter__  s    zSession.__enter__c             G   s   |    d S )N)rT   )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   rJ   filesdatajsonr:   ru   rs   r[   rt   )r[   r-   r   Z	CookieJarr   r   r   rs   re   r    rJ   r   Zpreparerm   upperr|   r}   r~   r2   r:   r   ru   r5   rt   )r<   rd   r[   Zmerged_cookiesrs   pr'   r'   r+   prepare_request  s*    



zSession.prepare_requestNTc             C   st   t | ||||pi ||pi |||d
}| |}|p8i }| |j||||}|	|
d}|| | j|f|}|S )a  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``.
        :param cert: (optional) if String, path to ssl client cert file (.pem).
            If Tuple, ('cert', 'key') pair.
        :rtype: requests.Response
        )
rm   rJ   r:   r|   r}   r~   ru   rs   r[   rt   )rE   rI   )r   r   r   merge_environment_settingsrJ   r.   r^   )r<   rm   rJ   ru   r}   r:   r[   r|   rs   rE   rI   rH   rt   rD   rF   rG   r~   r_   ZprepZsettingsZsend_kwargsr=   r'   r'   r+   rd     s(    )

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
        rI   Trk   )rh   rd   )r<   rJ   kwargsr'   r'   r+   r4     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
        rI   TZOPTIONS)rh   rd   )r<   rJ   r   r'   r'   r+   options$  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
        rI   Frj   )rh   rd   )r<   rJ   r   r'   r'   r+   head/  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~   )rd   )r<   rJ   r}   r~   r   r'   r'   r+   post:  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}   )rd   )r<   rJ   r}   r   r'   r'   r+   putG  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}   )rd   )r<   rJ   r}   r   r'   r'   r+   patchS  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DELETE)rd   )r<   rJ   r   r'   r'   r+   delete_  s    zSession.deletec             K   s~  | d| j | d| j | d| j | d| j t|trJtd|dd}|	d}|j
}| j|jd}t }|j|f|}t | }	t|	d	|_td
||f|}|jrx |jD ]}
t| j|
j|
j qW t| j||j | j||f|}|r
dd |D ng }|r.|d| | }||_|sny"t| j||fddi||_W n tk
rl   Y nX |sz|j |S )zISend a given PreparedRequest.

        :rtype: requests.Response
        rD   rF   rG   rH   z#You can only send PreparedRequests.rI   T)rJ   )Zsecondsr3   c             S   s   g | ]}|qS r'   r'   )r(   r=   r'   r'   r+   r,     s    z Session.send.<locals>.<listcomp>r   r`   )rh   rD   rF   rG   rH   r-   r   
ValueErrorrY   r4   rt   get_adapterrJ   preferred_clockr^   r   elapsedr   rM   r   r[   rd   rP   rc   insertnextZ_nextStopIterationrN   )r<   rd   r   rI   rD   rt   adapterstartrr   r=   genrM   r'   r'   r+   r^   i  sB    


"zSession.sendc       
      C   s   | j rr|dk	r|dnd}t||d}x | D ]\}}	|||	 q2W |dksZ|dkrrtjdpptjd}t|| j}t|| j	}t|| j
}t|| j}||||dS )z^
        Check the environment and merge it with some settings.

        :rtype: dict
        Nrf   )rf   TZREQUESTS_CA_BUNDLEZCURL_CA_BUNDLE)rF   rH   rD   rG   )re   r4   r   r/   rh   osenvironr2   rH   rD   rF   rG   )
r<   rJ   rH   rD   rF   rG   rf   Zenv_proxiesr)   r*   r'   r'   r+   r     s    z"Session.merge_environment_settingsc             C   s>   x,| j  D ]\}}| | r|S qW 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 '%s'N)rv   r/   lowerrU   r   )r<   rJ   prefixr   r'   r'   r+   r     s    zSession.get_adapterc             C   s    x| j  D ]}|  qW dS )z+Closes all adapters and as such the sessionN)rv   valuesrT   )r<   r*   r'   r'   r+   rT     s    zSession.closec                sB   || j  <  fdd| j D }x|D ]}| j || j |< q$W 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'   )rR   )r(   r)   )r   r'   r+   r,     s    z!Session.mount.<locals>.<listcomp>N)rv   rY   )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 )N)getattr)r(   attr)r<   r'   r+   
<dictcomp>  s    z(Session.__getstate__.<locals>.<dictcomp>)	__attrs__)r<   stater'   )r<   r+   __getstate__  s    zSession.__getstate__c             C   s&   x |  D ]\}}t| || q
W d S )N)r/   setattr)r<   r   r   valuer'   r'   r+   __setstate__  s    zSession.__setstate__)NNNNNNNTNNNNNN)NN)N)N)ro   rp   rq   __doc__r   rx   ry   r{   r   rd   r4   r   r   r   r   r   r   r^   r   r   rT   rw   r   r   r'   r'   r'   r+   rr   T  s2   
7)  
D



I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+   session  s    r   )>r   r   sysZtimeZdatetimer   rs   r   compatr   r   r   r   r	   r
   r[   r   r   r   r   Zmodelsr   r   r   rt   r   r   Z_internal_utilsr   Zutilsr   r   r   
exceptionsr   r   r   r   Z
structuresr   rv   r   r   r   r    r!   r"   r#   Zstatus_codesr$   r%   platformZperf_counterr   AttributeErrorZclockr2   r5   objectr6   rr   r   r'   r'   r'   r+   <module>	   s@     
 v   %