o
    Ba_Aw                     @   s  d Z ddlZddlZddlZddlZddlZddlZddlZddl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mZmZmZmZmZmZm Z m!Z!m"Z"m#Z# dd
l$m%Z% ddl&m'Z' ddl(m)Z)m*Z*m+Z+m,Z, dZ-e. Z/dddZ0ej1dkrdd Z2dd Zdd Z3dd Z4diddZ5dd Z6dd  Z7d!d" Z8d#d$ Z9d%d& Z:d'd( Z;did)d*Z<d+d, Z=d-d. Z>d/d0 Z?d1d2 Z@d3d4 ZAd5d6 ZBd7d8 ZCd9d: ZDeEd;ZFd<d= ZGd>d? ZHd@dA ZIdBdC ZJdDdE ZKdFdG ZLejMdHdI ZNdJdK ZOdjdLdMZPdNdO ZQdkdQdRZRdSdT ZSdUdV ZTdWUdXZVeVdY ZWeVdZ ZXd[d\ ZYd]d^ ZZd_d` Z[e\daZ]e\dbZ^dcdd Z_dedf Z`dgdh ZadS )lz
requests.utils
~~~~~~~~~~~~~~

This module provides utility functions that are used within Requests
that are also useful for external consumption.
    N)OrderedDict   __version__)certs)to_native_string)parse_http_list)quoteurlparsebytesstrunquote
getproxiesproxy_bypass
urlunparse
basestringinteger_typesis_py3proxy_bypass_environmentgetproxies_environmentMappingcookiejar_from_dict)CaseInsensitiveDict)
InvalidURLInvalidHeaderFileModeWarningUnrewindableBodyError)z.netrc_netrcP   i  )httphttpswin32c                 C   s   zt rdd l}ndd l}W n
 ty   Y dS w z||jd}t||dd }||dd }W n
 ty=   Y dS w |rB|sDdS |	d}|D ]*}|dkrXd| vrX d	S |
dd
}|
dd}|
dd}t|| tjru d	S qKdS )Nr   Fz;Software\Microsoft\Windows\CurrentVersion\Internet SettingsProxyEnableProxyOverride;z<local>.Tz\.*z.*?)r   winreg_winregImportErrorOpenKeyHKEY_CURRENT_USERintQueryValueExOSErrorsplitreplacerematchI)hostr)   internetSettingsproxyEnableproxyOverridetest r;   0/usr/lib/python3/dist-packages/requests/utils.pyproxy_bypass_registry0   sN   

r=   c                 C   s   t  rt| S t| S )zReturn True, if the host should be bypassed.

        Checks proxy settings gathered from the environment, if specified,
        or the registry.
        )r   r   r=   )r6   r;   r;   r<   r   W   s   r   c                 C   s   t | dr	|  } | S )z/Returns an internal sequence dictionary update.items)hasattrr>   )dr;   r;   r<   dict_to_sequencec   s   
rA   c              	   C   s$  d }d}t | drt| }n0t | dr| j}n't | dr>z|  }W n
 tjy,   Y nw t|j}d| jvr>t	
dt t | drz|  }W n ttfyZ   |d urX|}Y n+w t | dr|d u rz| dd	 |  }| |ptd W n ttfy   d}Y nw |d u rd}td|| S )
Nr   __len__lenfilenoba%  Requests has determined the content-length for this request using the binary size of the file: however, the file has been opened in text mode (i.e. without the 'b' flag in the mode). This may lead to an incorrect content-length. In Requests 3.0, support will be removed for files in text mode.tellseek   )r?   rC   rD   ioUnsupportedOperationosfstatst_sizemodewarningswarnr   rF   r0   IOErrorrG   max)ototal_lengthcurrent_positionrD   r;   r;   r<   	super_lenl   sJ   






rV   Fc              	   C   s>  t jd}|dur|f}ndd tD }z}ddlm}m} d}|D ]!}zt j|}W n ty8   Y  W dS w t j	|rC|} nq"|du rKW dS t
| }	d}
t| tr[|
d}
|	j|
d }z|||}|r|d rsdnd	}|| |d
 fW W S W W dS  |tfy   |r Y W dS w  ttfy   Y dS w )z;Returns the Requests tuple auth for a given url from netrc.NETRCNc                 s   s    | ]}d  |V  qdS )z~/{}N)format).0fr;   r;   r<   	<genexpr>   s    z!get_netrc_auth.<locals>.<genexpr>r   )netrcNetrcParseError   :asciir   rH   )rK   environgetNETRC_FILESr\   r]   path
expanduserKeyErrorexistsr
   
isinstancer   decodenetlocr1   authenticatorsrQ   r+   AttributeError)urlraise_errors
netrc_filenetrc_locationsr\   r]   
netrc_pathrZ   locrisplitstrr6   r   login_ir;   r;   r<   get_netrc_auth   sL   


ru   c                 C   sN   t | dd}|rt|tr!|d dkr#|d dkr%tj|S dS dS dS dS )z0Tries to guess the filename of the given object.nameNr   <>)getattrrg   r   rK   rc   basename)objrv   r;   r;   r<   guess_filename   s   
r}   c                 C   s   t j| r| S t j| \}}|r/t j|s/t j|\}}d||g}|r/t j|rt|s6| S t|}|| vrC| S t	
 }t jj|g|dR  }t j|sa|j||d}|S )zReplace nonexistent paths that look like they refer to a member of a zip
    archive with the location of an extracted copy of the target, or else
    just return the provided path unchanged.
    /)rc   )rK   rc   rf   r1   joinzipfile
is_zipfileZipFilenamelisttempfile
gettempdirextract)rc   archivememberprefixzip_filetmpextracted_pathr;   r;   r<   extract_zipped_paths   s"   

r   c                 C   s.   | du rdS t | ttttfrtdt| S )a  Take an object and test to see if it can be represented as a
    dictionary. Unless it can not be represented as such, return an
    OrderedDict, e.g.,

    ::

        >>> from_key_val_list([('key', 'val')])
        OrderedDict([('key', 'val')])
        >>> from_key_val_list('string')
        Traceback (most recent call last):
        ...
        ValueError: cannot encode objects that are not 2-tuples
        >>> from_key_val_list({'key': 'val'})
        OrderedDict([('key', 'val')])

    :rtype: OrderedDict
    N+cannot encode objects that are not 2-tuples)rg   r   r   boolr.   
ValueErrorr   valuer;   r;   r<   from_key_val_list
  s
   r   c                 C   s@   | du rdS t | ttttfrtdt | tr|  } t| S )a  Take an object and test to see if it can be represented as a
    dictionary. If it can be, return a list of tuples, e.g.,

    ::

        >>> to_key_val_list([('key', 'val')])
        [('key', 'val')]
        >>> to_key_val_list({'key': 'val'})
        [('key', 'val')]
        >>> to_key_val_list('string')
        Traceback (most recent call last):
        ...
        ValueError: cannot encode objects that are not 2-tuples

    :rtype: list
    Nr   )	rg   r   r   r   r.   r   r   r>   listr   r;   r;   r<   to_key_val_list%  s   
r   c                 C   sX   g }t | D ]#}|dd |dd   krdkr$n nt|dd }|| q|S )a  Parse lists as described by RFC 2068 Section 2.

    In particular, parse comma-separated lists where the elements of
    the list may include quoted-strings.  A quoted-string could
    contain a comma.  A non-quoted string could have quotes in the
    middle.  Quotes are removed automatically after parsing.

    It basically works like :func:`parse_set_header` just that items
    may appear multiple times and case sensitivity is preserved.

    The return value is a standard :class:`list`:

    >>> parse_list_header('token, "quoted value"')
    ['token', 'quoted value']

    To create a header from the :class:`list` again, use the
    :func:`dump_header` function.

    :param value: a string with a list header.
    :return: :class:`list`
    :rtype: list
    Nr   rx   ")_parse_list_headerunquote_header_valueappend)r   resultitemr;   r;   r<   parse_list_headerC  s   (r   c                 C   sx   i }t | D ]3}d|vrd||< q|dd\}} | dd | dd   kr+dkr5n nt| dd } | ||< q|S )a^  Parse lists of key, value pairs as described by RFC 2068 Section 2 and
    convert them into a python dict:

    >>> d = parse_dict_header('foo="is a fish", bar="as well"')
    >>> type(d) is dict
    True
    >>> sorted(d.items())
    [('bar', 'as well'), ('foo', 'is a fish')]

    If there is no value for a key it will be `None`:

    >>> parse_dict_header('key_without_value')
    {'key_without_value': None}

    To create a header from the :class:`dict` again, use the
    :func:`dump_header` function.

    :param value: a string with a dict header.
    :return: :class:`dict`
    :rtype: dict
    =Nr   rx   r   )r   r1   r   )r   r   r   rv   r;   r;   r<   parse_dict_headerc  s   (
r   c                 C   s^   | r-| d | d   krdkr-n | S | dd } |r#| dd dkr-|  dd d	dS | S )
zUnquotes a header value.  (Reversal of :func:`quote_header_value`).
    This does not use the real unquoting but what browsers are actually
    using for quoting.

    :param value: the header value to unquote.
    :rtype: str
    r   rx   r   r   NrH   z\\\z\")r2   )r   is_filenamer;   r;   r<   r     s   "r   c                 C   s   i }| D ]}|j ||j< q|S )zReturns a key/value dictionary from a CookieJar.

    :param cj: CookieJar object to extract cookies from.
    :rtype: dict
    )r   rv   )cjcookie_dictcookier;   r;   r<   dict_from_cookiejar  s   r   c                 C   s
   t || S )zReturns a CookieJar from a key/value dictionary.

    :param cj: CookieJar to insert cookies into.
    :param cookie_dict: Dict of key/values to insert into CookieJar.
    :rtype: CookieJar
    r   )r   r   r;   r;   r<   add_dict_to_cookiejar  s   
r   c                 C   sT   t dt tjdtjd}tjdtjd}td}|| ||  ||  S )zlReturns encodings from given content string.

    :param content: bytestring to extract encodings from.
    zIn requests 3.0, get_encodings_from_content will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)z!<meta.*?charset=["\']*(.+?)["\'>])flagsz+<meta.*?content=["\']*;?charset=(.+?)["\'>]z$^<\?xml.*?encoding=["\']*(.+?)["\'>])rO   rP   DeprecationWarningr3   compiler5   findall)content
charset_re	pragma_rexml_rer;   r;   r<   get_encodings_from_content  s   
r   c           
      C   s   |  d}|d  |dd }}i }d}|D ]0}| }|rH|d}}|d}	|	dkrB|d|	 |}||	d d |}||| < q||fS )	zReturns content type and parameters from given header

    :param header: string
    :return: tuple containing content type and dictionary of
         parameters
    r%   r   r   Nz"' Tr   rx   )r1   stripfindlower)
headertokenscontent_typeparamsparams_dictitems_to_stripparamkeyr   index_of_equalsr;   r;   r<   _parse_content_type_header  s   


r   c                 C   sP   |  d}|s	dS t|\}}d|v r|d dS d|v r dS d|v r&dS dS )	z}Returns encodings from given HTTP Header Dict.

    :param headers: dictionary to extract encoding from.
    :rtype: str
    zcontent-typeNcharsetz'"textz
ISO-8859-1zapplication/jsonutf-8)ra   r   r   )headersr   r   r;   r;   r<   get_encoding_from_headers  s   
r   c                 c   sp    |j du r| D ]}|V  qdS t|j dd}| D ]}||}|r'|V  q|jddd}|r6|V  dS dS )zStream decodes a iterator.Nr2   errors    T)final)encodingcodecsgetincrementaldecoderrh   )iteratorrr   decoderchunkrvr;   r;   r<   stream_decode_response_unicode  s   


r   c                 c   sX    d}|du s|dkrt | }|t | k r*| |||  V  ||7 }|t | k sdS dS )z Iterate over slices of a string.r   N)rC   )stringslice_lengthposr;   r;   r<   iter_slices  s   r   c                 C   sv   t dt g }t| j}|r%zt| j|W S  ty$   || Y nw z	t| j|ddW S  t	y:   | j Y S w )zReturns the requested content back in unicode.

    :param r: Response object to get unicode content from.

    Tried:

    1. charset from content-type
    2. fall back and replace all unicode characters

    :rtype: str
    zIn requests 3.0, get_unicode_from_response will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)r2   r   )
rO   rP   r   r   r   r   r   UnicodeErrorr   	TypeError)r   tried_encodingsr   r;   r;   r<   get_unicode_from_response  s"   

r   zBABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~c              	   C   s   |  d}tdt|D ]M}|| dd }t|dkrQ| rQz	tt|d}W n ty6   td| w |tv rH||| dd  ||< qd||  ||< qd||  ||< qd	|S )	zUn-escape any percent-escape sequences in a URI that are unreserved
    characters. This leaves all reserved, illegal and non-ASCII bytes encoded.

    :rtype: str
    %r   r   rH      z%Invalid percent-escape sequence: '%s'N )
r1   rangerC   isalnumchrr.   r   r   UNRESERVED_SETr   )uripartsihcr;   r;   r<   unquote_unreservedD  s   

r   c                 C   s:   d}d}z	t t| |dW S  ty   t | |d Y S w )zRe-quote the given URI.

    This function passes the given URI through an unquote/quote cycle to
    ensure that it is fully and consistently quoted.

    :rtype: str
    z!#$%&'()*+,/:;=?@[]~z!#$&'()*+,/:;=?@[]~)safe)r	   r   r   )r   safe_with_percentsafe_without_percentr;   r;   r<   requote_uri\  s   r   c                 C   sl   t dt| d }|d\}}t dttt|d }t dt|d |@ }||@ ||@ kS )zThis function allows you to check if an IP belongs to a network subnet

    Example: returns True if ip = 192.168.1.1 and net = 192.168.1.0/24
             returns False if ip = 192.168.1.1 and net = 192.168.100.0/24

    :rtype: bool
    z=Lr   r~   )structunpacksocket	inet_atonr1   dotted_netmaskr.   )ipnetipaddrnetaddrbitsnetmasknetworkr;   r;   r<   address_in_networkr  s
   r   c                 C   s&   ddd|  > d A }t td|S )zConverts mask from /xx format to xxx.xxx.xxx.xxx

    Example: if mask is 24 function returns 255.255.255.0

    :rtype: str
    l    r       z>I)r   	inet_ntoar   pack)maskr   r;   r;   r<   r     s   r   c                 C   s(   zt |  W dS  t jy   Y dS w )z
    :rtype: bool
    FT)r   r   error)	string_ipr;   r;   r<   is_ipv4_address  s   r   c                 C   s   |  ddkr@zt| dd }W n
 ty   Y dS w |dk s%|dkr'dS zt| dd  W dS  tjy?   Y dS w dS )zV
    Very simple check of the cidr format in no_proxy variable.

    :rtype: bool
    r~   r   Fr   r   T)countr.   r1   r   r   r   r   )string_networkr   r;   r;   r<   is_valid_cidr  s   r   c              	   c   sz    |du}|rt j| }|t j| < zdV  W |r*|du r#t j| = dS |t j| < dS dS |r<|du r7t j| = w |t j| < w )zSet the environment variable 'env_name' to 'value'

    Save previous value, yield, and then restore the previous value stored in
    the environment variable 'env_name'.

    If 'value' is None, do nothingN)rK   r`   ra   )env_namer   value_changed	old_valuer;   r;   r<   set_environ  s   
r  c           	   
   C   s8  dd }|}|du r|d}t | }|jdu rdS |rkdd |dd	d
D }t|jrJ|D ]}t|r@t|j|r? dS q0|j|krH dS q0n!|j}|jrX|d|j7 }|D ]}|j	|sg|	|rj dS qZt
d| zt|j}W n ttjfy   d}Y nw W d   n1 sw   Y  |rdS dS )zL
    Returns whether we should bypass proxies or not.

    :rtype: bool
    c                 S   s   t j| pt j|  S N)rK   r`   ra   upper)kr;   r;   r<   <lambda>  s    z'should_bypass_proxies.<locals>.<lambda>Nno_proxyTc                 s   s    | ]}|r|V  qd S r  r;   )rY   r6   r;   r;   r<   r[     s    
z(should_bypass_proxies.<locals>.<genexpr> r   ,z:{}F)r
   hostnamer2   r1   r   r   r   portrX   endswithr  r   r   r   gaierror)	rl   r  	get_proxyno_proxy_argparsedproxy_iphost_with_portr6   bypassr;   r;   r<   should_bypass_proxies  sN   


	r  c                 C   s   t | |dri S t S )zA
    Return a dict of environment proxies.

    :rtype: dict
    )r  )r  r   )rl   r  r;   r;   r<   get_environ_proxies  s   r  c                 C   sv   |pi }t | }|jdu r||j|dS |jd |j |jd|j dg}d}|D ]}||v r8|| } |S q+|S )zSelect a proxy for the url, if applicable.

    :param url: The url being for the request
    :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs
    Nallz://zall://)r
   r	  ra   scheme)rl   proxiesurlparts
proxy_keysproxy	proxy_keyr;   r;   r<   select_proxy  s"   
r  python-requestsc                 C   s   d| t f S )zO
    Return a string representing the default user agent.

    :rtype: str
    z%s/%sr   )rv   r;   r;   r<   default_user_agent(  s   r  c                   C   s   t t dddddS )z9
    :rtype: requests.structures.CaseInsensitiveDict
    z, )gzipdeflatez*/*z
keep-alive)z
User-AgentzAccept-EncodingAccept
Connection)r   r  r   r;   r;   r;   r<   default_headers1  s   r#  c           	   
   C   s   g }d}|  |} | s|S td| D ]M}z
|dd\}}W n ty-   |d}}Y nw d| di}|dD ] }z	|d\}} W n
 tyO   Y  nw |  ||| |< q:|| q|S )	zReturn a list of parsed link headers proxies.

    i.e. Link: <http:/.../front.jpeg>; rel=front; type="image/jpeg",<http://.../back.jpeg>; rel=back;type="image/jpeg"

    :rtype: list
    z '"z, *<r%   r   r   rl   z<> '"r   )r   r3   r1   r   r   )	r   linksreplace_charsvalrl   r   linkr   r   r;   r;   r<   parse_header_links=  s*   
r(   r_   rH      c                 C   s   | dd }|t jt jfv rdS |dd t jkrdS |dd t jt jfv r)dS |t}|dkr4d	S |dkrN|ddd tkrCd
S |ddd tkrNdS |dkrf|dd t	kr\dS |dd t	krfdS dS )z
    :rtype: str
    N   zutf-32r*  z	utf-8-sigrH   zutf-16r   r   z	utf-16-ber   z	utf-16-lez	utf-32-bez	utf-32-le)
r   BOM_UTF32_LEBOM_UTF32_BEBOM_UTF8BOM_UTF16_LEBOM_UTF16_BEr   _null_null2_null3)datasample	nullcountr;   r;   r<   guess_json_utfh  s*   
r7  c                 C   s8   t | |\}}}}}}|s||}}t||||||fS )zGiven a URL that may or may not have a scheme, prepend the given scheme.
    Does not replace a present scheme with the one provided as an argument.

    :rtype: str
    )r
   r   )rl   
new_schemer  ri   rc   r   queryfragmentr;   r;   r<   prepend_scheme_if_needed  s   
r;  c              	   C   s@   t | }zt|jt|jf}W |S  ttfy   d}Y |S w )z{Given a url with authentication components, extract them into a tuple of
    username,password.

    :rtype: (str,str)
    )r   r   )r
   r   usernamepasswordrk   r   )rl   r  authr;   r;   r<   get_auth_from_url  s   r?  s   ^\S[^\r\n]*$|^$z^\S[^\r\n]*$|^$c              	   C   s^   | \}}t |trt}nt}z||std| W dS  ty.   td||t|f w )zVerifies that header value is a string which doesn't contain
    leading whitespace or return characters. This prevents unintended
    header injection.

    :param header: tuple, in the format (name, value).
    z7Invalid return character or leading space in header: %sz>Value for header {%s: %s} must be of type str or bytes, not %sN)rg   r   _CLEAN_HEADER_REGEX_BYTE_CLEAN_HEADER_REGEX_STRr4   r   r   type)r   rv   r   patr;   r;   r<   check_header_validity  s   

rD  c                 C   sF   t | \}}}}}}|s||}}|ddd }t|||||dfS )zW
    Given a url remove the fragment and the authentication part.

    :rtype: str
    @r   rx   r   )r
   rsplitr   )rl   r  ri   rc   r   r9  r:  r;   r;   r<   urldefragauth  s
   
rG  c              	   C   sV   t | jdd}|dur't| jtr'z|| j W dS  ttfy&   tdw td)zfMove file pointer back to its recorded starting position
    so it can be read again on redirect.
    rG   Nz;An error occurred when rewinding request body for redirect.z+Unable to rewind request body for redirect.)rz   bodyrg   _body_positionr   rQ   r0   r   )prepared_request	body_seekr;   r;   r<   rewind_body  s   rL  )Fr  )r  )b__doc__r   
contextlibrI   rK   r3   r   r   sysr   rO   r   collectionsr   r   r   r   _internal_utilsr   compatr   r   r	   r
   r   r   r   r   r   r   r   r   r   r   r   r   cookiesr   
structuresr   
exceptionsr   r   r   r   rb   whereDEFAULT_CA_BUNDLE_PATHDEFAULT_PORTSplatformr=   rA   rV   ru   r}   r   r   r   r   r   r   r   r   r   r   r   r   r   r   	frozensetr   r   r   r   r   r   r   contextmanagerr  r  r  r  r  r#  r(  encoder1  r2  r3  r7  r;  r?  r   r@  rA  rD  rG  rL  r;   r;   r;   r<   <module>   s   @

'	
=9  
#
%

=
	
& 

