Viewing File: /opt/alt/python35/lib64/python3.5/wsgiref/__pycache__/validate.cpython-35.opt-1.pyc
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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 zero or 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).
Ú validatoré Nz^[a-zA-Z][a-zA-Z0-9\-_]*$z [\000-\037]c @ s e Z d Z d Z d S)Ú WSGIWarningz:
Raised in response to WSGI-spec-related warnings
N)Ú__name__Ú
__module__Ú __qualname__Ú__doc__© r r ú5/opt/alt/python35/lib64/python3.5/wsgiref/validate.pyr y s r c G s | s t | Œ ‚ d S)N)ÚAssertionError)ZcondÚargsr r r Úassert_~ s r c C s8 t | ƒ t k r | St d j | t | ƒ ƒ ƒ ‚ d S)Nz!{0} must be of type str (got {1}))ÚtypeÚstrr
ÚformatÚrepr)ÚvalueÚtitler r r Úcheck_string_type‚ s r c s ‡ f d d † } | S)a®
When applied between a WSGI server and a WSGI application, this
middleware will check for WSGI compliancy 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).
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zInputWrapper.__iter__c C s t d d ƒ d S)Nr z input.close() must not be called)r )r/ r r r Úcloseß s zInputWrapper.closeN) r r r r1 r2 r5 r6 r: r; r r r r r& ¿ s r& c @ sL e Z d Z d d „ Z d d „ Z d d „ Z d d „ Z d d
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r r< Úwrite)r/ Úsr r r r> ç s zErrorWrapper.writec C s | j j ƒ d S)N)r< Úflush)r/ r r r r@ ë s zErrorWrapper.flushc C s" x | D] } | j | ƒ q Wd S)N)r> )r/ Úseqr9 r r r Ú
writelinesî s
zErrorWrapper.writelinesc C s t d d ƒ d S)Nr z!errors.close() must not be called)r )r/ r r r r; ò s zErrorWrapper.closeN)r r r r1 r> r@ rB r; r r r r r' â s
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r3 rC )r/ r? r r r Ú__call__ú s zWriteWrapper.__call__N)r r r r1 rD r r r r r õ s r c @ s( e Z d Z d d „ Z d d „ Z d S)ÚPartialIteratorWrapperc C s
| | _ d S)N)r+ )r/ Ú
wsgi_iteratorr r r r1 s z PartialIteratorWrapper.__init__c C s t | j d ƒ S)N)r) r+ )r/ r r r r: s z PartialIteratorWrapper.__iter__N)r r r r1 r: r r r r rE þ s rE c @ sL e Z d Z d d „ Z d d „ Z d d „ Z d d „ Z d d
„ Z d S) r) c C s. | | _ t | ƒ | _ d | _ | | _ d S)NF)Úoriginal_iteratorÚiterr+ ÚclosedÚcheck_start_response)r/ rF rJ r r r r1 s zIteratorWrapper.__init__c C s | S)Nr )r/ r r r r: s zIteratorWrapper.__iter__c C sr t | j d ƒ t | j ƒ } t | ƒ t k rF t d d | f ƒ | j d k rn t | j d ƒ 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 rI Únextr+ r
r3 rJ )r/ r4 r r r Ú__next__ s
zIteratorWrapper.__next__c C s, d | _ t | j d ƒ r( | j j ƒ d S)NTr; )rI ÚhasattrrG r; )r/ r r r r; s zIteratorWrapper.closec C s- | j s t j j d ƒ t | j d ƒ d S)Nz/Iterator garbage collected without being closed)rI ÚsysÚstderrr> r )r/ r r r Ú__del__# s
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| d' ƒ d( k d) | d' ƒ | j d" ƒ slt d% | k d* ƒ t | j d" ƒ d# k d+ ƒ d S).Nz:Environment is not of the right type: %r (environment: %r)ZREQUEST_METHODZ SERVER_NAMEZ SERVER_PORTz wsgi.versionz
wsgi.inputz wsgi.errorszwsgi.multithreadzwsgi.multiprocessz
wsgi.run_oncez$Environment missing required key: %rZHTTP_CONTENT_TYPEZHTTP_CONTENT_LENGTHz8Environment should not have the key: %s (use %s instead)é Z QUERY_STRINGz’QUERY_STRING is not in the WSGI environment; the cgi module will use sys.argv when this variable is missing, so application errors are more likelyÚ.z9Environmental variable %s is not a string: %r (value: %r)z#wsgi.version should be a tuple (%r)zwsgi.url_schemeÚhttpÚhttpszwsgi.url_scheme unknown: %rÚGETÚHEADÚPOSTÚOPTIONSÚPATCHÚPUTÚDELETEÚTRACEzUnknown REQUEST_METHOD: %rZ SCRIPT_NAMEú/z$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 '/')rS rT )rU rV rW rX rY rZ r[ r\ )r r
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| t ƒ d S) NÚStatusr r r z)Status codes must be three characters: %réd zStatus code is invalid: %ré ú zjThe status string (%r) should be a three-digit integer followed by a single space and a status explanation)r Úsplitr r rg r_ r` r )r Z status_codeZ
status_intr r r r w s "r c C sz t t | ƒ t k d | t | ƒ f ƒ i } xD| D]<} t t | ƒ t k d | t | ƒ f ƒ t t | ƒ d k ƒ | \ } } t | d ƒ } t | d ƒ } t | j ƒ d k d | ƒ d | | j ƒ <t d | k oê d | k d
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} xV | D]N \ } } t | d ƒ } | j ƒ d k r8 | | k ru d St d d | ƒ q8 W| | k r§ t d d | ƒ d S) Nrj r r éÌ é0 z Header namez 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 rg rn rs r )r r ÚcodeZNO_MESSAGE_BODYrz r r r r r s r c C s9 t | d k p t | ƒ t k d | t | ƒ f ƒ d S)Nz exc_info (%r) is not a tuple: %r)r r
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