Your IP : 18.117.94.180


Current Path : /opt/alt/python310/lib64/python3.10/wsgiref/__pycache__/
Upload File :
Current File : //opt/alt/python310/lib64/python3.10/wsgiref/__pycache__/validate.cpython-310.opt-1.pyc

o

6��f�:�@s�dZdgZddlZddlZddlZe�d�Ze�d�ZGdd�de�Z	dd	�Z
d
d�Zdd�ZGd
d�d�Z
Gdd�d�ZGdd�d�ZGdd�d�ZGdd�d�Zdd�Zdd�Zdd�Zdd�Zdd �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\-_]*$z[\000-\037]c@seZdZdZdS)�WSGIWarningz:
    Raised in response to WSGI-spec-related warnings
    N)�__name__�
__module__�__qualname__�__doc__�rr�7/opt/alt/python310/lib64/python3.10/wsgiref/validate.pyrysrcGs|st|��dS�N)�AssertionError)Zcond�argsrrr	�assert_~s�r
cCs$t|�tur|Std�|t|����)Nz!{0} must be of type str (got {1}))�type�strr�format�repr)�value�titlerrr	�check_string_type�s
�rcs�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).
    cs�tt|�dkd�t|d�|\}�t|�g���fdd�}t|d�|d<t|d�|d<�||�}t|duo=|dkd	�t|�t|��S)
N�zTwo arguments required�No keyword arguments allowedcs�tt|�dkpt|�dkd|f�t|d�|d}|d}t|�dkr+|d}nd}t|�t|�t||�t|���d�t�|��S)Nr�zInvalid number of arguments: %srr�)r
�len�check_status�
check_headers�check_content_type�check_exc_info�append�WriteWrapper)r�kw�status�headers�exc_info�Zstart_responseZstart_response_startedrr	�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)r0r1rr/r	r�s)c@s<eZdZdd�Zdd�Zdd�Zdd�Zd	d
�Zdd�Zd
S)r)cC�
||_dSr
)�input)�self�
wsgi_inputrrr	�__init__��
zInputWrapper.__init__cGs0tt|�dk�|jj|�}tt|�tu�|S�Nr)r
rr3�readr�bytes�r4r�vrrr	r9��zInputWrapper.readcGs0tt|�dk�|jj|�}tt|�tu�|Sr8)r
rr3�readlinerr:r;rrr	r>�r=zInputWrapper.readlinecGsJtt|�dk�|jj|�}tt|�tu�|D]
}tt|�tu�q|Sr8)r
rr3�	readlinesr�listr:)r4r�lines�linerrr	r?�szInputWrapper.readlinesccs�	|��}|s
dS|Vqr
)r>)r4rBrrr	�__iter__�s��zInputWrapper.__iter__cC�tdd�dS)Nrz input.close() must not be called�r
�r4rrr	�close��zInputWrapper.closeN)	rrrr6r9r>r?rCrGrrrr	r)�sr)c@�4eZdZdd�Zdd�Zdd�Zdd�Zd	d
�ZdS)r*cCr2r
)�errors)r4�wsgi_errorsrrr	r6�r7zErrorWrapper.__init__cCs tt|�tu�|j�|�dSr
)r
rrrJ�write�r4�srrr	rL�szErrorWrapper.writecCs|j��dSr
)rJ�flushrFrrr	rO�rHzErrorWrapper.flushcCs|D]}|�|�qdSr
)rL)r4�seqrBrrr	�
writelines�s�zErrorWrapper.writelinescCrD)Nrz!errors.close() must not be calledrErFrrr	rG�rHzErrorWrapper.closeN)rrrr6rLrOrQrGrrrr	r*�sr*c@�eZdZdd�Zdd�ZdS)rcCr2r
)�writer)r4Zwsgi_writerrrr	r6�r7zWriteWrapper.__init__cCstt|�tu�|�|�dSr
)r
rr:rSrMrrr	�__call__�szWriteWrapper.__call__N)rrrr6rTrrrr	r��rc@rR)�PartialIteratorWrappercCr2r
�r.)r4�
wsgi_iteratorrrr	r6r7zPartialIteratorWrapper.__init__cCst|jd�Sr
)r,r.rFrrr	rCszPartialIteratorWrapper.__iter__N)rrrr6rCrrrr	rV�rUrVc@rI)r,cCs ||_t|�|_d|_||_dS)NF)�original_iterator�iterr.�closed�check_start_response)r4rXr\rrr	r6	s

zIteratorWrapper.__init__cCs|Sr
rrFrrr	rCszIteratorWrapper.__iter__cCsTt|jd�t|j�}t|�turtdd|f�|jdur(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.rr:r\)r4r<rrr	�__next__s�

�zIteratorWrapper.__next__cCs$d|_t|jd�r|j��dSdS)NTrG)r[�hasattrrYrGrFrrr	rGs�zIteratorWrapper.closecCs"|js	tj�d�t|jd�dS)Nz/Iterator garbage collected without being closed)r[�sys�stderrrLr
rFrrr	�__del__#s��zIteratorWrapper.__del__N)rrrr6rCr^rGrbrrrr	r,sr,cCs�tt|�tudt|�|f�dD]}t||vd|f�qdD]}t||vd||dd�f�q d|vr<t�dt�|��D]}d	|vrGq@tt||�tud
|t||�||f�q@tt|d�tud|df�t|d
dvd|d
�t	|d�t
|d�|ddvr�t�d|dt�t|�d�p�|d�d�d|d�t|�d�p�|d�d�d|d�|�d�r�tt
|d�dkd|d�|�d�s�td|vd�t|�d�dkd�dS)Nz:Environment is not of the right type: %r (environment: %r))	�REQUEST_METHODZSERVER_NAMEZSERVER_PORT�wsgi.versionr&r'zwsgi.multithreadzwsgi.multiprocessz
wsgi.run_oncez$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)rdz#wsgi.version should be a tuple (%r)zwsgi.url_scheme)ZhttpZhttpszwsgi.url_scheme unknown: %rr&r'rc)ZGETZHEADZPOSTZOPTIONSZPATCHZPUTZDELETEZTRACEzUnknown REQUEST_METHOD: %rZSCRIPT_NAME�/z$SCRIPT_NAME doesn't start with /: %rZ	PATH_INFOz"PATH_INFO doesn't start with /: %rZCONTENT_LENGTHrzInvalid 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-�keyrrr	r(*sx
���������
�
�
�
�

�
��r(cC�&dD]}tt||�d||f�qdS)N)r9r>r?rCz-wsgi.input (%r) doesn't have the attribute %s�r
r_)r5�attrrrr	rmk�
���rmcCrs)N)rOrLrQz.wsgi.errors (%r) doesn't have the attribute %srt)rKrurrr	rnqrvrncCszt|d�}|�dd�d}tt|�dkd|�t|�}t|dkd|�t|�dks1|dd	kr;t�d
|t�dSdS)N�Statusrrrz)Status codes must be three characters: %r�dzStatus 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
rrqrirjr)r!Zstatus_codeZ
status_intrrr	rws
����rcCstt|�tud|t|�f�|D]n}tt|�tud|t|�f�tt|�dk�|\}}t|d�}t|d�}t|��dkd|�td|voKd	|vd
|�tt�|�d|�t|�	d�of|�	d
�d|�t
�|�rtdd|t
�|��d�f�qdS)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 '_': %rrz#Bad header value: %r (bad char: %r))r
rr@rlrr�lower�	header_re�search�endswith�bad_header_value_re�group)r"�item�namerrrr	r�sB
��
��

����
���rcCs�t|d�}t|�dd�d�}d}|D]\}}t|d�}|��dkr0||vr)dStdd|�q||vr>tdd|�dSdS)	Nrwrr)��i0r|zcontent-typezJContent-Type header found in a %s response, which must not return content.z,No Content-Type header found in headers (%s))rrqr{r�r
)r!r"�codeZNO_MESSAGE_BODYr�rrrr	r�s

���rcCs*t|dup
t|�tud|t|�f�dS)Nz exc_info (%r) is not a tuple: %r)r
rrl)r#rrr	r�s�rcCstt|ttf�d�dS)NzwYou should not return a string as your application iterator, instead return a single-item list containing a bytestring.)r
�
isinstancerr:rWrrr	r+�s�r+)r�__all__�rer`ri�compiler�r��Warningrr
rrr)r*rrVr,r(rmrnrrrrr+rrrr	�<module>s0j

7#		#A

?>