3
v^]W                 @   sR  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	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 d dlmZ d d	l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% e& Z'ej(dZ)G dd de*Z+G dd de,Z-G dd dZ.G dd deZ/G dd deZ0dd Z1dd Z2dd Z3dS )    N)BytesIO)chain)quote	urlencodeurljoinurlsplit)settings)signing)DisallowedHostImproperlyConfiguredRequestDataTooBig)uploadhandler)MultiPartParserMultiPartParserError)CaseInsensitiveMappingImmutableListMultiValueDict)escape_uri_path
iri_to_uri)cached_property)is_same_domainlimited_parse_qslz1^([a-z0-9.-]+|\[[a-f0-9]*:[a-f0-9\.:]+\])(:\d+)?$c               @   s   e Zd ZdS )UnreadablePostErrorN)__name__
__module____qualname__ r   r   7/usr/lib/python3.6/site-packages/django/http/request.pyr      s   r   c               @   s   e Zd ZdZdS )RawPostDataExceptionz
    You cannot access raw_post_data from a request that has
    multipart/* POST data if it has been accessed via POST,
    FILES, etc..
    N)r   r   r   __doc__r   r   r   r   r      s   r   c               @   sJ  e Zd ZdZdZg Zdd Zdd Zedd Z	d	d
 Z
dd Zdd Zdd ZdCddZdDddZdd ZeddfddZdd ZdEddZedd  Zd!d" Zed#d$ Zd%d& Zd'd( Zed)d* Zejd+d* Zd,d- Zed.d/ Zejd0d/ Zd1d2 Zed3d4 Z d5d6 Z!d7d8 Z"d9d: Z#d;d< Z$d=d> Z%d?d@ Z&dAdB Z'dS )FHttpRequestzA basic HTTP request.Nc             C   sT   t dd| _t dd| _i | _i | _t | _d| _d| _d | _	d | _
d | _d | _d S )NT)mutable )	QueryDictGETPOSTCOOKIESMETAr   ZFILESpath	path_infomethodresolver_matchcontent_typecontent_params)selfr   r   r   __init__/   s    zHttpRequest.__init__c             C   s8   | j d ks| j  r d| jj S d| jj| j | j f S )Nz<%s>z<%s: %s %r>)r*   get_full_path	__class__r   )r.   r   r   r   __repr__A   s    zHttpRequest.__repr__c             C   s
   t | jS )N)HttpHeadersr'   )r.   r   r   r   headersF   s    zHttpRequest.headersc             C   s^   t j|jdd\| _| _d| jkrZytj| jd  W n tk
rL   Y nX | jd | _dS )z/Set content_type, content_params, and encoding.CONTENT_TYPEr"   charsetN)	cgiZparse_headergetr,   r-   codecslookupLookupErrorencoding)r.   metar   r   r   _set_content_type_paramsJ   s    
z$HttpRequest._set_content_type_paramsc             C   sh   t jrd| jkr| jd }nHd| jkr2| jd }n2| jd }| j }|| j rRdndkrdd||f }|S )z
        Return the HTTP host using the environment or request headers. Skip
        allowed hosts protection, so may return an insecure host.
        ZHTTP_X_FORWARDED_HOSTZ	HTTP_HOSTSERVER_NAME44380z%s:%s)r   USE_X_FORWARDED_HOSTr'   get_port	is_secure)r.   hostZserver_portr   r   r   _get_raw_hostU   s    


zHttpRequest._get_raw_hostc             C   sp   | j  }tj}tjr$| r$dddg}t|\}}|rBt||rB|S d| }|r\|d| 7 }n|d7 }t|dS )z>Return the HTTP host using the environment or request headers.	localhostz	127.0.0.1z[::1]zInvalid HTTP_HOST header: %r.z) You may need to add %r to ALLOWED_HOSTS.zB The domain name provided is not valid according to RFC 1034/1035.N)rF   r   ALLOWED_HOSTSDEBUGsplit_domain_portvalidate_hostr
   )r.   rE   allowed_hostsdomainportmsgr   r   r   get_hosth   s    
zHttpRequest.get_hostc             C   s.   t jrd| jkr| jd }n
| jd }t|S )z3Return the port number for the request as a string.ZHTTP_X_FORWARDED_PORTSERVER_PORT)r   USE_X_FORWARDED_PORTr'   str)r.   rN   r   r   r   rC   |   s    
zHttpRequest.get_portFc             C   s   | j | j|S )N)_get_full_pathr(   )r.   force_append_slashr   r   r   r0      s    zHttpRequest.get_full_pathc             C   s   | j | j|S )N)rT   r)   )r.   rU   r   r   r   get_full_path_info   s    zHttpRequest.get_full_path_infoc             C   sJ   dt ||r|jd rdnd| jjddrBdt| jjdd ndf S )Nz%s%s%s/r"   QUERY_STRING?)r   endswithr'   r8   r   )r.   r(   rU   r   r   r   rT      s    zHttpRequest._get_full_pathr"   c             C   sz   y| j | }W n" tk
r0   |tk	r*|S  Y nX ytj|| dj||d}W n$ tjk
rt   |tk	rn|S  Y nX |S )z
        Attempt to return a signed cookie. If the signature fails or the
        cookie has expired, raise an exception, unless the `default` argument
        is provided,  in which case return that value.
        )salt)max_age)r&   KeyErrorRAISE_ERRORr	   Zget_cookie_signerZunsignZBadSignature)r.   keydefaultr[   r\   Zcookie_valuevaluer   r   r   get_signed_cookie   s    zHttpRequest.get_signed_cookiec             C   s   dj | j| j | j dS )z
        Return an absolute URI from variables available in this request. Skip
        allowed hosts protection, so may return insecure URI.
        z{scheme}://{host}{path})schemerE   r(   )formatrc   rF   r0   )r.   r   r   r   get_raw_uri   s    zHttpRequest.get_raw_uric             C   s   |dkrd| j   }t|}|jo&|js|jjdrz|j rz|j rzd|jkrzd|jkrz|jdrn|dd }| j| }nt| j| j |}t|S )a  
        Build an absolute URI from the location and the variables available in
        this request. If no ``location`` is specified, build the absolute URI
        using request.get_full_path(). If the location is absolute, convert it
        to an RFC 3987 compliant URI and return it. If location is relative or
        is scheme-relative (i.e., ``//example.com/``), urljoin() it to a base
        URL constructed from the request variables.
        Nz//%srW   z/./z/../z//   )	r0   r   rc   netlocr(   
startswith_current_scheme_hostr   r   )r.   locationbitsr   r   r   build_absolute_uri   s    	
zHttpRequest.build_absolute_uric             C   s   dj | j| j S )Nz{}://{})rd   rc   rP   )r.   r   r   r   ri      s    z HttpRequest._current_scheme_hostc             C   s   dS )zf
        Hook for subclasses like WSGIRequest to implement. Return 'http' by
        default.
        httpr   )r.   r   r   r   _get_scheme   s    zHttpRequest._get_schemec             C   s^   t jrVyt j\}}W n tk
r0   tdY nX | jj|}|d k	rV||krRdS dS | j S )NzJThe SECURE_PROXY_SSL_HEADER setting must be a tuple containing two values.httpsrm   )r   SECURE_PROXY_SSL_HEADER
ValueErrorr   r'   r8   rn   )r.   headerZsecure_valueZheader_valuer   r   r   rc      s    zHttpRequest.schemec             C   s
   | j dkS )Nro   )rc   )r.   r   r   r   rD      s    zHttpRequest.is_securec             C   s   | j jddkS )NZHTTP_X_REQUESTED_WITHZXMLHttpRequest)r'   r8   )r.   r   r   r   is_ajax   s    zHttpRequest.is_ajaxc             C   s   | j S )N)	_encoding)r.   r   r   r   r<      s    zHttpRequest.encodingc             C   s&   || _ t| dr| `t| dr"| `dS )z
        Set the encoding used for GET/POST accesses. If the GET or POST
        dictionary has already been created, remove and recreate it on the
        next access (so that it is decoded correctly).
        r$   _postN)rt   hasattrr$   ru   )r.   valr   r   r   r<      s
    

c                s    fddt jD  _d S )Nc                s   g | ]}t j| qS r   )r   Zload_handler).0handler)r.   r   r   
<listcomp>  s   z4HttpRequest._initialize_handlers.<locals>.<listcomp>)r   FILE_UPLOAD_HANDLERS_upload_handlers)r.   r   )r.   r   _initialize_handlers  s    
z HttpRequest._initialize_handlersc             C   s   | j s| j  | j S )N)r|   r}   )r.   r   r   r   upload_handlers
  s    zHttpRequest.upload_handlersc             C   s   t | drtd|| _d S )N_fileszGYou cannot set the upload handlers after the upload has been processed.)rv   AttributeErrorr|   )r.   r~   r   r   r   r~     s    
c             C   s*   t | jdd| _t||| j| j}|j S )z9Return a tuple of (POST QueryDict, FILES MultiValueDict).zEYou cannot alter upload handlers after the upload has been processed.)warning)r   r~   r   r<   parse)r.   r'   	post_dataparserr   r   r   parse_file_upload  s
    
zHttpRequest.parse_file_uploadc             C   s   t | ds| jrtdtjd k	rDt| jjdp2dtjkrDtdy| j	 | _
W n. tk
r } zt|j |W Y d d }~X nX t| j
| _| j
S )N_bodyz?You cannot access body after reading from request's data streamCONTENT_LENGTHr   z;Request body exceeded settings.DATA_UPLOAD_MAX_MEMORY_SIZE.)rv   _read_startedr   r   DATA_UPLOAD_MAX_MEMORY_SIZEintr'   r8   r   readr   OSErrorr   argsr   _stream)r.   er   r   r   body   s    

zHttpRequest.bodyc             C   s   t  | _t | _d S )N)r#   ru   r   r   )r.   r   r   r   _mark_post_parse_error2  s    z"HttpRequest._mark_post_parse_errorc             C   s   | j dkr&t| jdt  | _| _dS | jrDt| d rD| j  dS | j	dkrt| drdt
| j}n| }y| j| j|\| _| _W q tk
r   | j   Y qX n@| j	dkrt| j| jdt  | _| _nt| jdt  | _| _dS )zFPopulate self._post and self._files if the content-type is a form typer%   )r<   Nr   zmultipart/form-dataz!application/x-www-form-urlencoded)r*   r#   rt   r   ru   r   r   rv   r   r,   r   r   r   r'   r   r   )r.   datar   r   r   _load_post_and_files6  s$    




z HttpRequest._load_post_and_filesc             C   s:   t | dr6x*tjdd | jj D D ]}|j  q&W d S )Nr   c             s   s   | ]}|d  V  qdS )   Nr   )rx   lr   r   r   	<genexpr>U  s    z$HttpRequest.close.<locals>.<genexpr>)rv   r   from_iterabler   listsclose)r.   fr   r   r   r   S  s    
 zHttpRequest.closec             O   sH   d| _ y| jj||S  tk
rB } zt|j |W Y d d }~X nX d S )NT)r   r   r   r   r   r   )r.   r   kwargsr   r   r   r   r   `  s
    zHttpRequest.readc             O   sH   d| _ y| jj||S  tk
rB } zt|j |W Y d d }~X nX d S )NT)r   r   readliner   r   r   )r.   r   r   r   r   r   r   r   g  s
    zHttpRequest.readlinec             C   s   t | jdS )N    )iterr   )r.   r   r   r   __iter__n  s    zHttpRequest.__iter__c             C   s   t | S )N)list)r.   r   r   r   	readlinesq  s    zHttpRequest.readlines)F)F)N)(r   r   r   r   rt   r|   r/   r2   r   r4   r>   rF   rP   rC   r0   rV   rT   r^   rb   re   rl   ri   rn   propertyrc   rD   rs   r<   setterr}   r~   r   r   r   r   r   r   r   r   r   r   r   r   r   r    (   sF   

	
!	r    c                   s@   e Zd ZdZddhZ fddZ fddZedd	 Z  Z	S )
r3   ZHTTP_r5   r   c                s@   i }x*|j  D ]\}}| j|}|r|||< qW t j| d S )N)itemsparse_header_namesuperr/   )r.   environr4   rr   ra   name)r1   r   r   r/   z  s    
zHttpHeaders.__init__c                s   t  j|jddS )z:Allow header lookup using underscores in place of hyphens._-)r   __getitem__replace)r.   r_   )r1   r   r   r     s    zHttpHeaders.__getitem__c             C   s>   |j | jr |t| jd  }n|| jkr.d S |jddj S )Nr   r   )rh   HTTP_PREFIXlenUNPREFIXED_HEADERSr   title)clsrr   r   r   r   r     s
    
zHttpHeaders.parse_header_name)
r   r   r   r   r   r/   r   classmethodr   __classcell__r   r   )r1   r   r3   u  s
   r3   c                   s   e Zd ZdZdZdZd) fdd	Zed*dd	Ze	d
d Z
e
jdd Z
dd Z fddZ fddZdd Zdd Z fddZd+ fdd	Z fddZ fddZ fdd Z fd!d"Zd, fd#d$	Zd%d& Zd-d'd(Z  ZS ).r#   a  
    A specialized MultiValueDict which represents a query string.

    A QueryDict can be used to represent GET or POST data. It subclasses
    MultiValueDict since keys in such data can be repeated, for instance
    in the data from a form with a <select multiple> field.

    By default QueryDicts are immutable, though the copy() method
    will always return a mutable copy.

    Both keys and values set on this class are converted from the given encoding
    (DEFAULT_CHARSET by default) to str.
    TNFc                s   t  j  |ptj| _|pd}dtj| jd}t|trhy|j| j}W n t	k
rf   |jd}Y nX x$t
|f|D ]\}}| j|| qvW || _d S )Nr"   T)keep_blank_valuesZfields_limitr<   z
iso-8859-1)r   r/   r   DEFAULT_CHARSETr<   DATA_UPLOAD_MAX_NUMBER_FIELDS
isinstancebytesdecodeUnicodeDecodeErrorr   
appendlist_mutable)r.   query_stringr!   r<   Zparse_qsl_kwargsr_   ra   )r1   r   r   r/     s    


zQueryDict.__init__r"   c             C   s6   | dd|d}x|D ]}|j || qW |s2d|_|S )zt
        Return a new QueryDict with keys (may be repeated) from an iterable and
        values from value.
        r"   T)r!   r<   F)r   r   )r   iterablera   r!   r<   qr_   r   r   r   fromkeys  s    
zQueryDict.fromkeysc             C   s   | j d krtj| _ | j S )N)rt   r   r   )r.   r   r   r   r<     s    
zQueryDict.encodingc             C   s
   || _ d S )N)rt   )r.   ra   r   r   r   r<     s    c             C   s   | j stdd S )Nz$This QueryDict instance is immutable)r   r   )r.   r   r   r   _assert_mutable  s    zQueryDict._assert_mutablec                s2   | j   t|| j}t|| j}t j|| d S )N)r   bytes_to_textr<   r   __setitem__)r.   r_   ra   )r1   r   r   r     s    zQueryDict.__setitem__c                s   | j   t j| d S )N)r   r   __delitem__)r.   r_   )r1   r   r   r     s    zQueryDict.__delitem__c             C   s8   | j dd| jd}x | j D ]\}}|j|| qW |S )Nr"   T)r!   r<   )r1   r<   r   setlist)r.   resultr_   ra   r   r   r   __copy__  s    zQueryDict.__copy__c             C   sT   | j dd| jd}||t| < x0| j D ]$\}}|jtj||tj|| q(W |S )Nr"   T)r!   r<   )r1   r<   idr   r   copydeepcopy)r.   memor   r_   ra   r   r   r   __deepcopy__  s
     zQueryDict.__deepcopy__c                s8    j   t| j} fdd|D }t j|| d S )Nc                s   g | ]}t | jqS r   )r   r<   )rx   elt)r.   r   r   rz     s    z%QueryDict.setlist.<locals>.<listcomp>)r   r   r<   r   r   )r.   r_   list_)r1   )r.   r   r     s    zQueryDict.setlistc                s   | j   t j||S )N)r   r   setlistdefault)r.   r_   Zdefault_list)r1   r   r   r     s    zQueryDict.setlistdefaultc                s2   | j   t|| j}t|| j}t j|| d S )N)r   r   r<   r   r   )r.   r_   ra   )r1   r   r   r     s    zQueryDict.appendlistc                s   | j   t j|f| S )N)r   r   pop)r.   r_   r   )r1   r   r   r     s    zQueryDict.popc                s   | j   t j S )N)r   r   popitem)r.   )r1   r   r   r     s    zQueryDict.popitemc                s   | j   t j  d S )N)r   r   clear)r.   )r1   r   r   r     s    zQueryDict.clearc                s.   | j   t|| j}t|| j}t j||S )N)r   r   r<   r   
setdefault)r.   r_   r`   )r1   r   r   r     s    zQueryDict.setdefaultc             C   s
   | j i S )z%Return a mutable copy of this object.)r   )r.   r   r   r   r     s    zQueryDict.copyc                sf   g }r"j jfdd ndd  x0j D ]$\}|j fdd|D  q4W dj|S )ah  
        Return an encoded string of all query string arguments.

        `safe` specifies characters which don't require quoting, for example::

            >>> q = QueryDict(mutable=True)
            >>> q['next'] = '/a&b/'
            >>> q.urlencode()
            'next=%2Fa%26b%2F'
            >>> q.urlencode(safe='/')
            'next=/a%26b/'
        c                s   dt |  t | f S )Nz%s=%s)r   )kv)safer   r   encode   s    z#QueryDict.urlencode.<locals>.encodec             S   s   t | |iS )N)r   )r   r   r   r   r   r   #  s    c             3   s,   | ]$} j jt|j jV  qd S )N)r   r<   rS   )rx   r   )r   r   r.   r   r   r   '  s   z&QueryDict.urlencode.<locals>.<genexpr>&)r   r<   r   extendjoin)r.   r   outputr   r   )r   r   r   r.   r   r     s    zQueryDict.urlencode)NFN)r"   FN)N)N)N)r   r   r   r   r   rt   r/   r   r   r   r<   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   )r1   r   r#     s,   r#   c             C   s   t | trt| |dS | S dS )u   
    Convert bytes objects to strings, using the given encoding. Illegally
    encoded input characters are replaced with Unicode "unknown" codepoint
    (�).

    Return any non-bytes objects without change.
    r   N)r   r   rS   )sr<   r   r   r   r   0  s    
r   c             C   sx   | j  } tj| sd	S | d
 dkr*| dfS | jdd}t|dkrF|n
|d df\}}|jdrl|dd n|}||fS )z
    Return a (domain, port) tuple from a given host.

    Returned domain is lowercased. If the host is invalid, the domain will be
    empty.
    r"   r   ]:rf   r   .N)r"   r"   r   )lowerhost_validation_rematchrsplitr   rZ   )rE   rk   rM   rN   r   r   r   rJ   >  s    
 rJ   c                s   t  fdd|D S )a4  
    Validate the given host for this site.

    Check that the host looks valid and matches a host or host pattern in the
    given list of ``allowed_hosts``. Any pattern beginning with a period
    matches a domain and all its subdomains (e.g. ``.example.com`` matches
    ``example.com`` and any subdomain), ``*`` matches anything, and anything
    else must match exactly.

    Note: This function assumes that the given host is lowercased and has
    already had the port, if any, stripped off.

    Return ``True`` for a valid host, ``False`` otherwise.
    c             3   s    | ]}|d kpt  |V  qdS )*N)r   )rx   pattern)rE   r   r   r   c  s    z validate_host.<locals>.<genexpr>)any)rE   rL   r   )rE   r   rK   T  s    rK   )4r7   r9   r   reior   	itertoolsr   urllib.parser   r   r   r   django.confr   Zdjango.corer	   django.core.exceptionsr
   r   r   Zdjango.core.filesr   Zdjango.http.multipartparserr   r   Zdjango.utils.datastructuresr   r   r   django.utils.encodingr   r   django.utils.functionalr   django.utils.httpr   r   objectr^   compiler   r   r   	Exceptionr   r    r3   r#   r   rJ   rK   r   r   r   r   <module>   s8   
	  O "