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validate.cpython-312.pyc
CRh: * d Z dgZddlZddlZddlZ ej d Z ej d Z G d de Z d Z d Z d Z G d d Z G d d Z G d d Z G d d Z G d d Zd Zd Zd Zd Zd Zd Zd Zd Zy) 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\-_]*$z [\000-\037]c e Zd ZdZy) WSGIWarningz: Raised in response to WSGI-spec-related warnings N)__name__ __module__ __qualname____doc__ '/usr/lib/python3.12/wsgiref/validate.pyr r y s r r c | st | y N)AssertionError)condargss r assert_r ~ s d## r c p t | t u r| S t dj |t | )Nz!{0} must be of type str (got {1}))typestrr formatrepr)valuetitles r check_string_typer s6 U|s +225$u+F H Hr c fd}|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 0 t t | dk( d t | d | \ }t | g fd}t |d |d< t |d |d< || }t |d uxr |dk7 d t | t | S ) N zTwo arguments required No keyword arguments allowedc L t t | dk( xs t | dk( d| t | d | d }| d }t | dk( r| d }nd }t | t | t || t | j d t | S )Nr z Invalid number of arguments: r r )r len check_status check_headerscheck_content_typecheck_exc_infoappend WriteWrapper)r kwstatusheadersexc_infostart_responsestart_response_starteds r start_response_wrapperz;validator.<locals>.lint_app.<locals>.start_response_wrapper s CIN4c$i1n59; > F : ;!WF1gG4yA~ 7 ' " vw / 8 $ " ) )$ / 56 6r wsgi.input wsgi.errorsFz>The application must return an iterator, if only an empty list)r r" check_environ InputWrapper ErrorWrappercheck_iteratorIteratorWrapper)r r) environr/ iteratorr- r. applications @@r lint_appzvalidator.<locals>.lint_app s D Q 89B67"& g "$ 7& !-W\-B C !-gm.D!E w(>?$:U): L N x x)?@@r r )r9 r: s ` r r r s 'AR Or c 0 e Zd Zd Zd Zd Zd Zd Zd Zy)r3 c || _ y r )input)self wsgi_inputs r __init__zInputWrapper.__init__ s r c t t | dk( | j j | }t t | t u |S Nr! )r r" r= readr bytesr> r vs r rC zInputWrapper.read s< D Q DJJOOT "Q5 !r c t t | dk | j j | }t t | t u |S rB )r r" r= readliner rD rE s r rH zInputWrapper.readline s> D Q DJJ &Q5 !r c t t | dk | j j | }t t | t u |D ] }t t | t u |S rB )r r" r= readlinesr listrD )r> r lineslines r rJ zInputWrapper.readlines sY D Q $ $$d+U t#$D DJ%' ( r c # ` K | j x}r| | j x}ry y wr )rH )r> rM s r __iter__zInputWrapper.__iter__ s/ mmo%d%J mmo%d%s )..c t dd y )Nr z input.close() must not be calledr r> s r closezInputWrapper.close s 56r N) r r r r@ rC rH rJ rO rS r r r r3 r3 s 7r r3 c * e Zd Zd Zd Zd Zd Zd Zy)r4 c || _ y r )errors)r> wsgi_errorss r r@ zErrorWrapper.__init__ ! r c n t t | t u | j j | y r )r r r rV writer> ss r rZ zErrorWrapper.write s$ Q3 ! r c 8 | j j y r )rV flushrR s r r^ zErrorWrapper.flush s r c 4 |D ] }| j | y r )rZ )r> seqrM s r writelineszErrorWrapper.writelines s D JJt r c t dd y )Nr z!errors.close() must not be calledrQ rR s r rS zErrorWrapper.close s 67r N)r r r r@ rZ r^ ra rS r r r r4 r4 s " 8r r4 c e Zd Zd Zd Zy)r( c || _ y r )writer)r> wsgi_writers r r@ zWriteWrapper.__init__ rX r c Z t t | t u | j | y r )r r rD re r[ s r __call__zWriteWrapper.__call__ s Q5 ! Ar N)r r r r@ rh r r r r( r( s "r r( c e Zd Zd Zd Zy)PartialIteratorWrapperc || _ y r r8 )r> wsgi_iterators r r@ z PartialIteratorWrapper.__init__ s % r c . t | j d S r )r6 r8 rR s r rO z PartialIteratorWrapper.__iter__ s t}}d33r N)r r r r@ rO r r r rj rj s &4r rj c * e Zd Zd Zd Zd Zd Zd Zy)r6 c N || _ t | | _ d| _ || _ y )NF)original_iteratoriterr8 closedcheck_start_response)r> rm rt s r r@ zIteratorWrapper.__init__ s% !. ]+ $8!r c | S r r rR s r rO zIteratorWrapper.__iter__ s r c t | j d t | j }t | t urt dd|d | j t | j d d | _ |S )NzIterator read after closedFz!Iterator yielded non-bytestring ()zjThe application returns and we started iterating over its body, but start_response has not yet been called)r rs nextr8 r rD rt )r> rF s r __next__zIteratorWrapper.__next__ si DKK ( * 7% EQH I $ $ 0 D--| ~(,D %r c t d| _ t | j d r| j j y y )NTrS )rs hasattrrq rS rR s r rS zIteratorWrapper.close s0 4))7 3 " " ( ( * 4r c | j s t j j d t | j d y )Nz/Iterator garbage collected without being closed)rs sysstderrrZ r rR s r __del__zIteratorWrapper.__del__ s0 {{ JJ A C = ?r N)r r r r@ rO ry rS r r r r r6 r6 s 9 + ?r r6 c b t t | t u dt | d| d dD ] }t || v d| dD ] }t || vd|d|d d d d | vrt j d t | j D ]> }d |v rt t | | t u d|dt | | d| | d @ t t | d t u d| d d t | d dv d| d z t | d t | d | d dvr t j d| d z t t | j d xs | d j d d | d z t | j d xs | d j d d | d z | j d r!t t | d d!k\ d"| d z | j d st d | v d# t | j d d k7 d$ y )%Nz&Environment is not of the right type: z (environment: rw ) REQUEST_METHOD SERVER_NAME SERVER_PORT wsgi.versionr0 r1 zwsgi.multithreadzwsgi.multiprocessz wsgi.run_oncez"Environment missing required key: )HTTP_CONTENT_TYPEHTTP_CONTENT_LENGTHz%Environment should not have the key: z (use z instead) QUERY_STRINGzQUERY_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.zEnvironmental variable z is not a string: z (value: r z wsgi.version should be a tuple (zwsgi.url_scheme)httphttpszwsgi.url_scheme unknown: %rr0 r1 r )GETHEADPOSTOPTIONSPATCHPUTDELETETRACEzUnknown REQUEST_METHOD: %r SCRIPT_NAME/z$SCRIPT_NAME doesn't start with /: %r PATH_INFOz"PATH_INFO doesn't start with /: %rCONTENT_LENGTHr zInvalid CONTENT_LENGTH: %rzgOne of SCRIPT_NAME or PATH_INFO are required (PATH_INFO should at least be '/' if SCRIPT_NAME is empty)zOSCRIPT_NAME cannot be '/'; it should instead be '', and PATH_INFO should be '/')r r dictwarningswarnr keysr tuple check_input check_errorsget startswithint)r7 keys r r2 r2 ' sn DMT ! =' #$! w69 ; = ! <7""%s12w 0 1 < W$ 4 ||~ #: WS\"c)D & 6 7 D ( )U 218 1HJL G% &*; ;%0A(BBD %& '( )M M (73C+D D M* * 6}%005. 1GGI K( ( 4{#..s3,w{/CCE {{#$G ,-.!3 (73C+D D F ;;} % w& > ? GKK &# - "#r c J dD ] }t t | | d| d| y )N)rC rH rJ rO z wsgi.input ( ) doesn't have the attribute r r{ )r? attrs r r r h s' = D)4 ! " >r c J dD ] }t t | | d| d| y )N)r^ rZ ra z wsgi.errors (r r )rW r s r r r n s' 0 T*D " # 1r c t | d } | j d d d }t t | dk( d|z t | }t |dk\ d|z t | dk s| d d k7 r t j d | z t y y ) NStatusr! r r z)Status codes must be three characters: %rd zStatus code is invalid: %r zjThe status string (%r) should be a three-digit integer followed by a single space and a status explanation)r splitr r" r r r r )r* status_code status_ints r r# r# t s vx 0F,,tQ'*K C !3kAC[!J J# ;j HI 6{Q&)s* B ! # +r c t t | t u d| dt | | D ]9 }t t | t u d|dt | t t | dk( |\ }}t |d }t |d }t |j dk7 d |z t d |vxr d |vd |z t t j | d |z t |j d xr |j d d|z t j | st dd|dt j | j d d < y )Nz Headers (z) must be of type list: zIndividual headers (z) must be of type tuple: r Header namez Header valuer* zyThe Status header cannot be used; it conflicts with CGI script, and HTTP status is not given through headers (value: %r). :z,Header names may not contain ':' or '\n': %rzBad header name: %r-_z#Names may not end in '-' or '_': %rr zBad header value: z (bad char: rw ) r r rK r r" r lower header_researchendswithbad_header_value_regroup)r+ itemnamer s r r$ r$ sM DMT ! DM #$ T e#T$Z ! " D Q e }5!% 8 ( " # $ D 4S_ ;d B D &(=(DEDMM#&&At}}S/A+A 1D 8 : % %e , A)007==a@B C% r c t | d } t | j d d d }d}|D ]: \ }}t |d }|j dk( s&||vr y t dd|z < ||vrt dd|z y y ) Nr 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 r r r r )r* r+ codeNO_MESSAGE_BODYr r s r r% r% s vx 0F v||D!$Q' (D !O e }5 ::<> )?* A 9<@A B ?"AGKL #r c d t | d u xs t | t u d| dt | y )Nz exc_info (z) is not a tuple: )r r r )r, s r r& r& s- H 7X% 7.6XGIr c F t t | t t f d y )NzwYou should not return a string as your application iterator, instead return a single-item list containing a bytestring.)r isinstancer rD rl s r r5 r5 s# 8c5\2 2 EFr )r __all__rer} r compiler r Warningr r r r r3 r4 r( rj r6 r2 r r r# r$ r% r& r5 r r r <module>r s iT - BJJ3 4 bjj 0 ' $H 5n 7 7@8 8& 4 4!? !?F?#B" # # C2M I Fr