U
    }®cˆW  ã                   @   sZ  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
mZmZ d dlmZmZ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 d dlmZ d dlmZ d dlm Z  edddid�Z!ee"ƒj#Z$G dd„ de%ƒZ&G dd„ dƒZ'd'dd„Z(e  )¡ dd„ ƒZ*dd„ Z+dd„ Z,G dd „ d ƒZ-G d!d"„ d"ƒZ.d#d$„ Z/d%d&„ Z0dS )(é    N)ÚPath)Úsettings)ÚHttp404ÚHttpResponseÚHttpResponseNotFound)ÚContextÚEngineÚTemplateDoesNotExist)Úpprint)Úresolve)Útimezone)ÚMultiValueDict)Ú	force_str)Úimport_string)Ú_lazy_re_compile)Úget_docs_versionTZi18nzdjango.templatetags.i18n)ÚdebugÚ	librariesc                   @   s   e Zd ZdS )ÚExceptionCycleWarningN)Ú__name__Ú
__module__Ú__qualname__© r   r   ú6/tmp/pip-unpacked-wheel-7m9rsep5/django/views/debug.pyr       s   r   c                   @   s    e Zd ZdZdd„ Zdd„ ZdS )ÚCallableSettingWrapperzÅ
    Object to wrap callable appearing in settings.
    * Not to call in the debug page (#21345).
    * Not to break the debug page if the callable forbidding to set attributes
      (#23070).
    c                 C   s
   || _ d S ©N)Ú_wrapped)ÚselfZcallable_settingr   r   r   Ú__init__+   s    zCallableSettingWrapper.__init__c                 C   s
   t | jƒS r   )Úreprr   ©r   r   r   r   Ú__repr__.   s    zCallableSettingWrapper.__repr__N)r   r   r   Ú__doc__r   r!   r   r   r   r   r   $   s   r   éô  c                 C   sL   t | ƒ| |||ƒ}|  d¡r2| ¡ }t||dd�S | ¡ }t||dd�S dS )z‰
    Create a technical server error response. The last three arguments are
    the values returned from sys.exc_info() and friends.
    ú	text/html)ÚstatusÚcontent_typeztext/plain; charset=utf-8N)Úget_exception_reporter_classZacceptsÚget_traceback_htmlr   Úget_traceback_text)ÚrequestÚexc_typeÚ	exc_valueÚtbÚstatus_codeZreporterÚhtmlÚtextr   r   r   Útechnical_500_response2   s    
r1   c                   C   s   t tjƒƒ S r   )r   r   Z!DEFAULT_EXCEPTION_REPORTER_FILTERr   r   r   r   Ú%get_default_exception_reporter_filter@   s    r2   c                 C   s   t ƒ }t| d|ƒS )NZexception_reporter_filter)r2   Úgetattr)r*   Zdefault_filterr   r   r   Úget_exception_reporter_filterF   s    r4   c                 C   s   t tjƒ}t| d|ƒS )NZexception_reporter_class)r   r   ZDEFAULT_EXCEPTION_REPORTERr3   )r*   Z default_exception_reporter_classr   r   r   r'   K   s    
r'   c                   @   sb   e Zd ZdZdZedejd�Zdd„ Z	dd„ Z
d	d
„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ ZdS )ÚSafeExceptionReporterFilterz‹
    Use annotations made by the sensitive_post_parameters and
    sensitive_variables decorators to filter out sensitive information.
    z********************z#API|TOKEN|KEY|SECRET|PASS|SIGNATURE)Úflagsc                    s°   zˆ j  |¡}W n tk
r(   d}Y nX |r6ˆ j}nft|tƒrX‡ fdd„| ¡ D ƒ}nDt|tƒrv‡ fdd„|D ƒ}n&t|tƒr˜t‡ fdd„|D ƒƒ}n|}t	|ƒr¬t
|ƒ}|S )z¦
        Cleanse an individual setting key/value of sensitive content. If the
        value is a dictionary, recursively cleanse the keys in that dictionary.
        Fc                    s   i | ]\}}|ˆ   ||¡“qS r   ©Úcleanse_setting©Ú.0ÚkÚvr    r   r   Ú
<dictcomp>e   s      z?SafeExceptionReporterFilter.cleanse_setting.<locals>.<dictcomp>c                    s   g | ]}ˆ   d |¡‘qS ©Ú r7   ©r:   r<   r    r   r   Ú
<listcomp>g   s     z?SafeExceptionReporterFilter.cleanse_setting.<locals>.<listcomp>c                    s   g | ]}ˆ   d |¡‘qS r>   r7   r@   r    r   r   rA   i   s     )Úhidden_settingsÚsearchÚ	TypeErrorÚcleansed_substituteÚ
isinstanceÚdictÚitemsÚlistÚtupleÚcallabler   )r   ÚkeyÚvalueZis_sensitiveÚcleansedr   r    r   r8   X   s     



z+SafeExceptionReporterFilter.cleanse_settingc                 C   s4   i }t tƒD ]"}| ¡ r|  |tt|ƒ¡||< q|S )z‡
        Return a dictionary of the settings module with values of sensitive
        settings replaced with stars (*********).
        )Údirr   Úisupperr8   r3   )r   Zsettings_dictr;   r   r   r   Úget_safe_settingsr   s
    z-SafeExceptionReporterFilter.get_safe_settingsc                    s&   t |dƒsi S ‡ fdd„|j ¡ D ƒS )zU
        Return a dictionary of request.META with sensitive values redacted.
        ÚMETAc                    s   i | ]\}}|ˆ   ||¡“qS r   r7   r9   r    r   r   r=   ƒ   s      zESafeExceptionReporterFilter.get_safe_request_meta.<locals>.<dictcomp>)ÚhasattrrR   rH   ©r   r*   r   r    r   Úget_safe_request_meta}   s    
z1SafeExceptionReporterFilter.get_safe_request_metac                 C   s
   t jdkS )a  
        This filter is to add safety in production environments (i.e. DEBUG
        is False). If DEBUG is True then your site is not safe anyway.
        This hook is provided as a convenience to easily activate or
        deactivate the filter on a per request basis.
        F)r   ÚDEBUGrT   r   r   r   Ú	is_active…   s    z%SafeExceptionReporterFilter.is_activec                 C   sB   t |dg ƒ}|  |¡r>|r>| ¡ }|D ]}||kr&| j||< q&|S )zç
        Replace the keys in a MultiValueDict marked as sensitive with stars.
        This mitigates leaking sensitive POST parameters if something like
        request.POST['nonexistent_key'] throws an exception (#21098).
        Úsensitive_post_parameters)r3   rW   ÚcopyrE   )r   r*   ZmultivaluedictrX   Úparamr   r   r   Úget_cleansed_multivaluedictŽ   s    z7SafeExceptionReporterFilter.get_cleansed_multivaluedictc                 C   s|   |dkri S t |dg ƒ}|  |¡rr|rr|j ¡ }|dkrP|D ]}| j||< q<|S |D ]}||krT| j||< qT|S n|jS dS )zk
        Replace the values of POST parameters marked as sensitive with
        stars (*********).
        NrX   Ú__ALL__)r3   rW   ÚPOSTrY   rE   )r   r*   rX   rN   r;   rZ   r   r   r   Úget_post_parametersœ   s    
z/SafeExceptionReporterFilter.get_post_parametersc              
   C   sV   zt |tƒ}W n2 tk
r@ } zd ||¡ W Y ¢S d }~X Y nX |rR|  ||¡}|S )Nz{!r} while evaluating {!r})rF   r   Ú	ExceptionÚformatr[   )r   r*   rM   Zis_multivalue_dictÚer   r   r   Úcleanse_special_typesµ   s    "z1SafeExceptionReporterFilter.cleanse_special_typesc           	      C   s  |j }d}|dk	rH|jjdkr@d|jkr@|jd }t|ddƒ}qH|j }q
i }|  |¡r´|r´|dkrz|jD ]}| j||< qhqØ|j ¡ D ],\}}||krœ| j}n|  ||¡}|||< q„n$|j ¡ D ]\}}|  ||¡||< q¾|jjdk�rd|jk�r| j|d< | j|d< | ¡ S )ze
        Replace the values of variables marked as sensitive with
        stars (*********).
        NZsensitive_variables_wrapperÚsensitive_variablesr\   Ú	func_argsZfunc_kwargs)	Úf_backÚf_codeÚco_nameÚf_localsr3   rW   rE   rH   rb   )	r   r*   Útb_frameÚcurrent_framerc   ÚwrapperrN   ÚnamerM   r   r   r   Úget_traceback_frame_variablesÃ   s8    ÿ

ÿ

z9SafeExceptionReporterFilter.get_traceback_frame_variablesN)r   r   r   r"   rE   r   ÚreÚIrB   r8   rQ   rU   rW   r[   r^   rb   rm   r   r   r   r   r5   P   s   	r5   c                   @   st   e Zd ZdZedd„ ƒZedd„ ƒZddd„Zd	d
„ Zdd„ Z	dd„ Z
dd„ Zddd„Zdd„ Zdd„ Zdd„ ZdS )ÚExceptionReporterz0Organize and coordinate reporting on exceptions.c                 C   s   t d d S )NÚ	templatesztechnical_500.html©ÚCURRENT_DIRr    r   r   r   Úhtml_template_pathù   s    z$ExceptionReporter.html_template_pathc                 C   s   t d d S )Nrq   ztechnical_500.txtrr   r    r   r   r   Útext_template_pathý   s    z$ExceptionReporter.text_template_pathFc                 C   sJ   || _ t| j ƒ| _|| _|| _|| _|| _t| jdd ƒ| _d| _	d | _
d S )NZtemplate_debugF)r*   r4   Úfilterr+   r,   r-   Úis_emailr3   Útemplate_infoÚtemplate_does_not_existÚ
postmortem)r   r*   r+   r,   r-   rw   r   r   r   r     s    zExceptionReporter.__init__c                 C   s`  | j r*t| j tƒr*d| _| jjp&| jg| _|  ¡ }t|ƒD ]p\}}d|kr¢g }|d D ]B\}}t	|ƒ}t
|ƒdkrŠd|dd… t
|ƒf }| ||f¡ qV||d< |||< q:d}| j �r0t| j tƒ�r0t| jddƒ}t| jd	dƒ}	|dk	�r0|	dk	�r0| jjd
 }
t|
t|d dƒt|	d t
|
ƒƒ… ddd�}ddlm} | jdk�rNd}n,zt| jjƒ}W n tk
�rx   d}Y nX | j||| j| j | j¡|t| j | j¡ ¡ ƒ| j ¡ tj dtj!dd…  t" #¡ |ƒ tj$| j%| j| jdœ}| jdk	�r | jj& ¡ |d< | jj' ¡ |d< | jj( ¡ |d< | j �r4| j j)|d< | j�rJt| jƒ|d< |�r\|d |d< |S )z5Return a dictionary containing traceback information.TÚvarsi   u   %sâ€¦ <trimmed %d bytes string>r   r?   ÚstartNÚendé   é   ÚasciiÚreplace)Úerrors)Úget_versionz%[unable to retrieve the current user]z%d.%d.%dé   )rw   Úunicode_hintÚframesr*   Zrequest_metaÚuser_strZfiltered_POST_itemsr   Zsys_executableZsys_version_infoZserver_timeZdjango_version_infoÚsys_pathrx   ry   rz   Zrequest_GET_itemsZrequest_FILES_itemsZrequest_COOKIES_itemsZexception_typeZexception_valueéÿÿÿÿZ	lastframe)*r+   Ú
issubclassr	   ry   r,   Úchainrz   Úget_traceback_framesÚ	enumerater
   ÚlenÚappendÚUnicodeErrorr3   Úargsr   ÚmaxÚminÚdjangorƒ   r*   ÚstrÚuserr_   rw   rv   rU   rI   r^   rH   rQ   ÚsysÚ
executableÚversion_infor   ÚnowÚpathrx   ÚGETZFILESZCOOKIESr   )r   r†   ÚiÚframeZ
frame_varsr;   r<   r…   r|   r}   Zunicode_strrƒ   r‡   Úcr   r   r   Úget_traceback_data  sx    
" þ
ðz$ExceptionReporter.get_traceback_datac              	   C   sB   | j jdd��}t | ¡ ¡}W 5 Q R X t|  ¡ dd�}| |¡S )z1Return HTML version of debug 500 HTTP error page.úutf-8©ÚencodingF)Úuse_l10n)rt   ÚopenÚDEBUG_ENGINEÚfrom_stringÚreadr   r    Úrender©r   ÚfhÚtrŸ   r   r   r   r(   U  s    z$ExceptionReporter.get_traceback_htmlc              	   C   sD   | j jdd��}t | ¡ ¡}W 5 Q R X t|  ¡ ddd�}| |¡S )z7Return plain text version of debug 500 HTTP error page.r¡   r¢   F)Z
autoescaper¤   )ru   r¥   r¦   r§   r¨   r   r    r©   rª   r   r   r   r)   \  s    z$ExceptionReporter.get_traceback_textc              	   C   sŠ   d }t |dƒrBz| |¡}W n tk
r0   Y nX |d k	rB| ¡ }|d kr†z&t|dƒ�}| ¡  ¡ }W 5 Q R X W n tk
r„   Y nX |S )NÚ
get_sourceÚrb)rS   r­   ÚImportErrorÚ
splitlinesr¥   r¨   ÚOSError)r   ÚfilenameÚloaderÚmodule_nameÚsourceÚfpr   r   r   Ú_get_sourcec  s    
zExceptionReporter._get_sourceNc                    sæ   |   |||¡}|dkr"dg dg fS t|d tƒrzd‰ |dd… D ]&}t d|¡}|r@|d  d¡‰  qhq@‡ fdd„|D ƒ}td|| ƒ}	|| }
z(||	|… }|| }||d |
… }W n  tk
rØ   dg dg f Y S X |	|||fS )	z—
        Return context_lines before and after lineno from file.
        Return (pre_context_lineno, pre_context, context_line, post_context).
        Nr   r€   é   s   coding[:=]\s*([-\w.]+)r~   c                    s   g | ]}t |ˆ d ƒ‘qS )r�   )r•   )r:   Úsliner¢   r   r   rA   ‰  s     z:ExceptionReporter._get_lines_from_file.<locals>.<listcomp>)r·   rF   Úbytesrn   rC   Údecoder’   Ú
IndexError)r   r²   ÚlinenoZcontext_linesr³   r´   rµ   ÚlineÚmatchZlower_boundZupper_boundÚpre_contextÚcontext_lineÚpost_contextr   r¢   r   Ú_get_lines_from_filet  s(    z&ExceptionReporter._get_lines_from_filec                 C   s4   t |dd ƒ}t |dd ƒ}t |dd ƒ}|p2|r0d S |S )NÚ	__cause__Ú__suppress_context__Ú__context__)r3   )r   r,   ÚexplicitZsuppress_contextZimplicitr   r   r   Ú_get_explicit_or_implicit_cause–  s    z1ExceptionReporter._get_explicit_or_implicit_causec                 C   s¦   g }| j }|r>| |¡ |  |¡}||kr
t d| t¡ q>q
g }|sJ|S | ¡ }|s\| jn|j}| 	|  
||¡¡ z| ¡ }W n tk
r˜   Y q¢Y nX |j}qb|S )NzHCycle in the exception chain detected: exception '%s' encountered again.)r,   r�   rÈ   ÚwarningsÚwarnr   Úpopr-   Ú__traceback__ÚextendÚget_exception_traceback_framesr¼   )r   Ú
exceptionsr,   r†   r-   r   r   r   rŒ   œ  s2    

ÿý
z&ExceptionReporter.get_traceback_framesc                 c   s  |   |¡}t|ddƒ}|d kr.||d ddœV  |d k	�r|jj d¡rN|j}q.|jjj}|jjj}|j	d }|jj
 d¡}|jj
 d¡pŠd	}	|  ||d
||	¡\}
}}}|
d kr¾|}
g }d}g }||||	 d¡rÒdnd|||d | j | j|j¡t|ƒ||||
d dœV  |j}q.d S )NrÄ   Tr–   )Ú	exc_causeÚexc_cause_explicitr-   ÚtypeZ__traceback_hide__r~   Ú
__loader__r   r?   é   z<source code not available>zdjango.r”   )rÐ   rÑ   r-   rÒ   r²   Úfunctionr½   r{   ÚidrÀ   rÁ   rÂ   Úpre_context_lineno)rÈ   r3   ri   rh   ÚgetÚtb_nextrf   Úco_filenamerg   Ú	tb_linenoÚ	f_globalsrÃ   Ú
startswithrv   rm   r*   rÖ   )r   r,   r-   rÐ   rÑ   r²   rÕ   r½   r³   r´   r×   rÀ   rÁ   rÂ   r   r   r   rÎ   ½  sX    
ü



    ÿóz0ExceptionReporter.get_exception_traceback_frames)F)NN)r   r   r   r"   Úpropertyrt   ru   r   r    r(   r)   r·   rÃ   rÈ   rŒ   rÎ   r   r   r   r   rp   ö   s   


H
"!rp   c                 C   s   z|j d d }W n( tttfk
r:   | jdd… }Y nX z|j d d }W n0 tttfk
r~   d}| jrv| jjnd}Y npX d}|ræ| jdkrît|ƒdkrît|d ƒdkrît	|d d d	d
ƒt	|d d dd
ƒ  krâdkrîn nt
| ƒS t	| dtjƒ}t|tjƒ�r|j}d
}zt| jƒ}W n tk
�r8   Y n\X |j}t|dƒ�rT|j}n"t|dƒ�rvt|jdƒ�rv|jj}t|dƒ�r”|j}	d|	|f }ttddƒjdd��}
t |
 ¡ ¡}W 5 Q R X tƒ }t|tj|||t|ƒ| |  ¡ |dœ	ƒ}t!| "|¡dd�S )zBCreate a technical 404 error response. `exception` is the Http404.r   r›   r~   NÚtriedTFú/Zapp_namer?   Ú	namespaceZadminÚurlconfr   Ú	__class__r   z%s.%srq   ztechnical_404.htmlr¡   r¢   )	râ   Zroot_urlconfÚrequest_pathZurlpatternsÚresolvedÚreasonr*   r   Zraising_view_namer$   ©r&   )#r‘   r¼   rD   ÚKeyErrorZ	path_infoÚresolver_matchrß   r›   rŽ   r3   Údefault_urlconfr   ZROOT_URLCONFrF   ÚtypesÚ
ModuleTyper   r   r   ÚfuncrS   rã   r   r   rs   r¥   r¦   r§   r¨   r2   r   r•   rQ   r   r©   )r*   Ú	exceptionZ	error_urlrß   rå   râ   Zcallerré   ÚobjÚmoduler«   r¬   Zreporter_filterrŸ   r   r   r   Útechnical_404_responseì  sl    ÿ
þý üü
÷rñ   c              	   C   sN   t tddƒjdd��}t | ¡ ¡}W 5 Q R X tdtƒ iƒ}t| 	|¡dd�S )z+Create an empty URLconf 404 error response.rq   zdefault_urlconf.htmlr¡   r¢   Úversionr$   rç   )
r   rs   r¥   r¦   r§   r¨   r   r   r   r©   )r*   r«   r¬   rŸ   r   r   r   rê   (  s     ÿrê   )r#   )1Ú	functoolsrn   r—   rë   rÉ   Úpathlibr   Zdjango.confr   Zdjango.httpr   r   r   Zdjango.templater   r   r	   Zdjango.template.defaultfiltersr
   Zdjango.urlsr   Zdjango.utilsr   Zdjango.utils.datastructuresr   Zdjango.utils.encodingr   Zdjango.utils.module_loadingr   Zdjango.utils.regex_helperr   Zdjango.utils.versionr   r¦   Ú__file__Úparentrs   ÚUserWarningr   r   r1   Ú	lru_cacher2   r4   r'   r5   rp   rñ   rê   r   r   r   r   Ú<module>   sD   þ


 ' w<