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Editing: validate.cpython-310.pyc
o 0�i�: � @ s� d Z dgZddlZddlZddlZe�d�Ze�d�ZG dd� de�Z dd � Z d d � Z d d� Z G d d� d�Z G dd� d�ZG dd� d�ZG dd� d�ZG dd� d�Zdd� Zdd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� ZdS )'a& Middleware to check for obedience to the WSGI specification. Some of the things this checks: * Signature of the application and start_response (including that keyword arguments are not used). * Environment checks: - Environment is a dictionary (and not a subclass). - That all the required keys are in the environment: REQUEST_METHOD, SERVER_NAME, SERVER_PORT, wsgi.version, wsgi.input, wsgi.errors, wsgi.multithread, wsgi.multiprocess, wsgi.run_once - That HTTP_CONTENT_TYPE and HTTP_CONTENT_LENGTH are not in the environment (these headers should appear as CONTENT_LENGTH and CONTENT_TYPE). - Warns if QUERY_STRING is missing, as the cgi module acts unpredictably in that case. - That CGI-style variables (that don't contain a .) have (non-unicode) string values - That wsgi.version is a tuple - That wsgi.url_scheme is 'http' or 'https' (@@: is this too restrictive?) - Warns if the REQUEST_METHOD is not known (@@: probably too restrictive). - That SCRIPT_NAME and PATH_INFO are empty or start with / - That at least one of SCRIPT_NAME or PATH_INFO are set. - That CONTENT_LENGTH is a positive integer. - That SCRIPT_NAME is not '/' (it should be '', and PATH_INFO should be '/'). - That wsgi.input has the methods read, readline, readlines, and __iter__ - That wsgi.errors has the methods flush, write, writelines * The status is a string, contains a space, starts with an integer, and that integer is in range (> 100). * That the headers is a list (not a subclass, not another kind of sequence). * That the items of the headers are tuples of strings. * That there is no 'status' header (that is used in CGI, but not in WSGI). * That the headers don't contain newlines or colons, end in _ or -, or contain characters codes below 037. * That Content-Type is given if there is content (CGI often has a default content type, but WSGI does not). * That no Content-Type is given when there is no content (@@: is this too restrictive?) * That the exc_info argument to start_response is a tuple or None. * That all calls to the writer are with strings, and no other methods on the writer are accessed. * That wsgi.input is used properly: - .read() is called with exactly one argument - That it returns a string - That readline, readlines, and __iter__ return strings - That .close() is not called - No other methods are provided * That wsgi.errors is used properly: - .write() and .writelines() is called with a string - That .close() is not called, and no other methods are provided. * The response iterator: - That it is not a string (it should be a list of a single string; a string will work, but perform horribly). - That .__next__() returns a string - That the iterator is not iterated over until start_response has been called (that can signal either a server or application error). - That .close() is called (doesn't raise exception, only prints to sys.stderr, because we only know it isn't called when the object is garbage collected). � validator� Nz^[a-zA-Z][a-zA-Z0-9\-_]*$z [\000-\037]c @ s e Zd ZdZdS )� WSGIWarningz: Raised in response to WSGI-spec-related warnings N)�__name__� __module__� __qualname__�__doc__� r r �7/opt/alt/python310/lib64/python3.10/wsgiref/validate.pyr y s r c G s | st |� �d S �N)�AssertionError)Zcond�argsr r r �assert_~ s �r c C s$ t | �tu r| S td�|t| ����)Nz!{0} must be of type str (got {1}))�type�strr �format�repr)�value�titler r r �check_string_type� s �r c s � fdd�}|S )a� When applied between a WSGI server and a WSGI application, this middleware will check for WSGI compliance on a number of levels. This middleware does not modify the request or response in any way, but will raise an AssertionError if anything seems off (except for a failure to close the application iterator, which will be printed to stderr -- there's no way to raise an exception at that point). c s� t t| �dkd� t | d� | \}� t|� g �� �fdd�}t|d �|d< t|d �|d< �||�}t |d uo=|dkd � t|� t|��S ) N� zTwo arguments required� No keyword arguments allowedc s� t t| �dkp t| �dkd| f � t | d� | d }| d }t| �dkr+| d }nd }t|� t|� t||� t|� ��d � t� | � �S )Nr � z Invalid number of arguments: %sr r � )r �len� check_status� check_headers�check_content_type�check_exc_info�append� WriteWrapper)r �kw�status�headers�exc_info�Zstart_responseZstart_response_startedr r �start_response_wrapper� s � z;validator.<locals>.lint_app.<locals>.start_response_wrapper� wsgi.input� wsgi.errorsFz>The application must return an iterator, if only an empty list)r r � check_environ� InputWrapper� ErrorWrapper�check_iterator�IteratorWrapper)r r �environr% �iterator�� applicationr$ r �lint_app� s � zvalidator.<locals>.lint_appr )r0 r1 r r/ r r � s )c @ s< e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd S )r) c C � || _ d S r )�input)�self� wsgi_inputr r r �__init__� � zInputWrapper.__init__c G s0 t t|�dk� | jj|� }t t|�tu � |S �Nr )r r r3 �readr �bytes�r4 r �vr r r r9 � � zInputWrapper.readc G s0 t t|�dk� | jj|� }t t|�tu � |S r8 )r r r3 �readliner r: r; r r r r> � r= zInputWrapper.readlinec G sJ t t|�dk� | jj|� }t t|�tu � |D ] }t t|�tu � q|S r8 )r r r3 � readlinesr �listr: )r4 r �lines�liner r r r? � s zInputWrapper.readlinesc c s � | � � }|s d S |V qr )r> )r4 rB r r r �__iter__� s ��zInputWrapper.__iter__c C � t dd� d S )Nr z input.close() must not be called�r �r4 r r r �close� � zInputWrapper.closeN) r r r r6 r9 r> r? rC rG r r r r r) � s r) c @ �4 e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd S ) r* c C r2 r )�errors)r4 � wsgi_errorsr r r r6 � r7 zErrorWrapper.__init__c C s t t|�tu � | j�|� d S r )r r r rJ �write�r4 �sr r r rL � s zErrorWrapper.writec C s | j �� d S r )rJ �flushrF r r r rO � rH zErrorWrapper.flushc C s |D ]}| � |� qd S r )rL )r4 �seqrB r r r � writelines� s �zErrorWrapper.writelinesc C rD )Nr z!errors.close() must not be calledrE rF r r r rG � rH zErrorWrapper.closeN)r r r r6 rL rO rQ rG r r r r r* � s r* c @ � e Zd Zdd� Zdd� ZdS )r c C r2 r )�writer)r4 Z wsgi_writerr r r r6 � r7 zWriteWrapper.__init__c C s t t|�tu � | �|� d S r )r r r: rS rM r r r �__call__� s zWriteWrapper.__call__N)r r r r6 rT r r r r r � � r c @ rR )�PartialIteratorWrapperc C r2 r �r. )r4 � wsgi_iteratorr r r r6 r7 z PartialIteratorWrapper.__init__c C s t | jd �S r )r, r. rF r r r rC s z PartialIteratorWrapper.__iter__N)r r r r6 rC r r r r rV � rU rV c @ rI ) r, c C s || _ t|�| _d| _|| _d S )NF)�original_iterator�iterr. �closed�check_start_response)r4 rX r\ r r r r6 s zIteratorWrapper.__init__c C s | S r r rF r r r rC s zIteratorWrapper.__iter__c C sT t | j d� t| j�}t|�turt dd|f � | jd ur(t | jd� d | _|S )NzIterator read after closedFz$Iterator yielded non-bytestring (%r)zjThe application returns and we started iterating over its body, but start_response has not yet been called)r r[ �nextr. r r: r\ )r4 r< r r r �__next__ s � �zIteratorWrapper.__next__c C s$ d| _ t| jd�r| j�� d S d S )NTrG )r[ �hasattrrY rG rF r r r rG s �zIteratorWrapper.closec C s" | j s tj�d� t| j d� d S )Nz/Iterator garbage collected without being closed)r[ �sys�stderrrL r rF r r r �__del__# s ��zIteratorWrapper.__del__N)r r r r6 rC r^ rG rb r r r r r, s r, c C s� t t| �tu dt| �| f � dD ] }t || v d|f � qdD ]}t || vd||dd � f � q d| vr<t�dt� | �� D ] }d |v rGq@t t| | �tu d |t| | �| | f � q@t t| d �tu d | d f � t | d dv d| d � t | d � t | d � | d dvr�t�d| d t� t | � d� p�| d � d�d| d � t | � d� p�| d � d�d| d � | � d�r�t t | d �dkd | d � | � d�s�t d| v d � t | � d�dkd � d S ) Nz:Environment is not of the right type: %r (environment: %r)) �REQUEST_METHODZ SERVER_NAMEZ SERVER_PORT� wsgi.versionr& r' zwsgi.multithreadzwsgi.multiprocessz wsgi.run_oncez$Environment missing required key: %r)ZHTTP_CONTENT_TYPEZHTTP_CONTENT_LENGTHz8Environment should not have the key: %s (use %s instead)� Z QUERY_STRINGz�QUERY_STRING is not in the WSGI environment; the cgi module will use sys.argv when this variable is missing, so application errors are more likely�.z9Environmental variable %s is not a string: %r (value: %r)rd z#wsgi.version should be a tuple (%r)zwsgi.url_scheme)ZhttpZhttpszwsgi.url_scheme unknown: %rr& r' rc )ZGETZHEADZPOSTZOPTIONSZPATCHZPUTZDELETEZTRACEzUnknown REQUEST_METHOD: %rZ SCRIPT_NAME�/z$SCRIPT_NAME doesn't start with /: %rZ PATH_INFOz"PATH_INFO doesn't start with /: %rZCONTENT_LENGTHr zInvalid CONTENT_LENGTH: %rzgOne of SCRIPT_NAME or PATH_INFO are required (PATH_INFO should at least be '/' if SCRIPT_NAME is empty)zOSCRIPT_NAME cannot be '/'; it should instead be '', and PATH_INFO should be '/')r r �dict�warnings�warnr �keysr �tuple� check_input� check_errors�get� startswith�int)r- �keyr r r r( * sx ������ �� � � � � � � ��r( c C �& dD ]}t t| |�d| |f � qd S )N)r9 r> r? rC z-wsgi.input (%r) doesn't have the attribute %s�r r_ )r5 �attrr r r rm k � ���rm c C rs )N)rO rL rQ z.wsgi.errors (%r) doesn't have the attribute %srt )rK ru r r r rn q rv rn c C sz t | d�} | �d d�d }tt|�dkd| � t|�}t|dkd| � t| �dk s1| d d kr;t�d | t� d S d S ) N�Statusr r r z)Status codes must be three characters: %r�d zStatus code is invalid: %r� � zjThe status string (%r) should be a three-digit integer followed by a single space and a status explanation)r �splitr r rq ri rj r )r! Z status_codeZ status_intr r r r w s ����r c C s t t| �tu d| t| �f � | D ]n}t t|�tu d|t|�f � t t|�dk� |\}}t|d�}t|d�}t |�� dkd| � t d|voKd |vd | � t t�|�d | � t |� d � of|� d � d| � t �|�rt dd|t �|�� d�f � qd S )Nz%Headers (%r) must be of type list: %rz1Individual headers (%r) must be of type tuple: %rr � Header namez Header valuer! zyThe Status header cannot be used; it conflicts with CGI script, and HTTP status is not given through headers (value: %r).� �:z,Header names may not contain ':' or '\n': %rzBad header name: %r�-�_z#Names may not end in '-' or '_': %rr z#Bad header value: %r (bad char: %r)) r r r@ rl r r �lower� header_re�search�endswith�bad_header_value_re�group)r" �item�namer r r r r � sB �� �� ���� ���r c C s� t | d�} t| �d d�d �}d}|D ] \}}t |d�}|�� dkr0||vr) d S tdd| � q||vr>tdd| � d S d S ) Nrw r r )�� i0 r| z content-typezJContent-Type header found in a %s response, which must not return content.z,No Content-Type header found in headers (%s))r rq r{ r� r )r! r" �codeZNO_MESSAGE_BODYr� r r r r r � s ���r c C s* t | d u p t| �tu d| t| �f � d S )Nz exc_info (%r) is not a tuple: %r)r r rl )r# r r r r � s �r c C s t t| ttf� d� d S )NzwYou should not return a string as your application iterator, instead return a single-item list containing a bytestring.)r � isinstancer r: rW r r r r+ � s �r+ )r �__all__�rer` ri �compiler� r� �Warningr r r r r) r* r rV r, r( rm rn r r r r r+ r r r r �<module> s0 j 7# #A
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