ó
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X\¬Qc @ sF d Z d g Z d d l Z d d l Z d d l m Z m Z m Z m Z d d l Z e j
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Z d d d YZ d d d YZ d d d YZ d d d YZ d d! d YZ d Z d Z d Z d Z d Z d Z d Z d Z d S(" s"
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Middleware to check for obedience to the WSGI specification.
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Some of the things this checks:
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* Signature of the application and start_response (including that
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keyword arguments are not used).
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* Environment checks:
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- Environment is a dictionary (and not a subclass).
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- That all the required keys are in the environment: REQUEST_METHOD,
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SERVER_NAME, SERVER_PORT, wsgi.version, wsgi.input, wsgi.errors,
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wsgi.multithread, wsgi.multiprocess, wsgi.run_once
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- That HTTP_CONTENT_TYPE and HTTP_CONTENT_LENGTH are not in the
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environment (these headers should appear as CONTENT_LENGTH and
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CONTENT_TYPE).
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- Warns if QUERY_STRING is missing, as the cgi module acts
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unpredictably in that case.
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- That CGI-style variables (that don't contain a .) have
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(non-unicode) string values
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- That wsgi.version is a tuple
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- That wsgi.url_scheme is 'http' or 'https' (@@: is this too
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restrictive?)
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- Warns if the REQUEST_METHOD is not known (@@: probably too
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restrictive).
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- That SCRIPT_NAME and PATH_INFO are empty or start with /
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- That at least one of SCRIPT_NAME or PATH_INFO are set.
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- That CONTENT_LENGTH is a positive integer.
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- That SCRIPT_NAME is not '/' (it should be '', and PATH_INFO should
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be '/').
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- That wsgi.input has the methods read, readline, readlines, and
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__iter__
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- That wsgi.errors has the methods flush, write, writelines
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* The status is a string, contains a space, starts with an integer,
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and that integer is in range (> 100).
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* That the headers is a list (not a subclass, not another kind of
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sequence).
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* That the items of the headers are tuples of strings.
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* That there is no 'status' header (that is used in CGI, but not in
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WSGI).
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* That the headers don't contain newlines or colons, end in _ or -, or
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contain characters codes below 037.
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* That Content-Type is given if there is content (CGI often has a
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default content type, but WSGI does not).
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* That no Content-Type is given when there is no content (@@: is this
|
too restrictive?)
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* That the exc_info argument to start_response is a tuple or None.
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* That all calls to the writer are with strings, and no other methods
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on the writer are accessed.
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* That wsgi.input is used properly:
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- .read() is called with zero or one argument
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- That it returns a string
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- That readline, readlines, and __iter__ return strings
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- That .close() is not called
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- No other methods are provided
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* That wsgi.errors is used properly:
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- .write() and .writelines() is called with a string
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- That .close() is not called, and no other methods are provided.
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* The response iterator:
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- That it is not a string (it should be a list of a single string; a
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string will work, but perform horribly).
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- That .next() returns a string
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- That the iterator is not iterated over until start_response has
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been called (that can signal either a server or application
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error).
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- That .close() is called (doesn't raise exception, only prints to
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sys.stderr, because we only know it isn't called when the object
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is garbage collected).
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t validatoriÿÿÿÿN( t DictTypet
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StringTypet TupleTypet ListTypes ^[a-zA-Z][a-zA-Z0-9\-_]*$s [\000-\037]t WSGIWarningc B s e Z d Z RS( s:
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Raised in response to WSGI-spec-related warnings
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( t __name__t
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__module__t __doc__( ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR z s c G s | s t | n d S( N( t AssertionError( t condt args( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyt assert_ s c s f d } | S( s®
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When applied between a WSGI server and a WSGI application, this
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middleware will check for WSGI compliancy on a number of levels.
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This middleware does not modify the request or response in any
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way, but will raise an AssertionError if anything seems off
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(except for a failure to close the application iterator, which
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will be printed to stderr -- there's no way to raise an exception
|
at that point).
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c s t t | d k d t | d | \ } t | g f d } t | d | d <t | d | d < | | } t | d k o¤ | t k d t | t | S( Ni s Two arguments requireds No keyword arguments allowedc sÁ t t | d k p$ t | d k d | f t | d | d } | d } t | d k rs | d } n d } t | t | t | | t | j d t | S( Ni i s Invalid number of arguments: %ss No keyword arguments allowedi i ( R t lent Nonet check_statust check_headerst check_content_typet check_exc_infot appendt WriteWrapper( R t kwt statust headerst exc_info( t start_responset start_response_started( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyt start_response_wrapper s $
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R c B s e Z d Z d Z RS( c C s | | _ d S( N( t writer( R' t wsgi_writer( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR) ñ s c C s- t t | t d k | j | d S( NR* ( R R, R; ( R' R7 ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyt __call__ô s ( R R R) R= ( ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR ï s t PartialIteratorWrapperc B s e Z d Z d Z RS( c C s | | _ d S( N( R# ( R' t wsgi_iterator( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR) ú s c C s t | j d S( N( R! R# R ( R' ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR2 ý s ( R R R) R2 ( ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR> ø s R! c B s5 e Z d Z d Z d Z d Z d Z RS( c C s. | | _ t | | _ t | _ | | _ d S( N( t original_iteratort iterR# R t closedt check_start_response( R' R? RC ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR) s c C s | S( N( ( R' ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR2 s c C sO t | j d | j j } | j d k rK t | j d d | _ n | S( Ns Iterator read after closedsj The application returns and we started iterating over its body, but start_response has not yet been called( R RB R# t nextRC R ( R' R- ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyRD s
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| d$ j d" d% | d$ | j d& rPt t | d& d' k d( | d& n | j d! sut d$ | k d) n t | j d! d" k d* d S(- Ns: Environment is not of the right type: %r (environment: %r)t REQUEST_METHODt SERVER_NAMEt SERVER_PORTs wsgi.versions
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wsgi.inputs wsgi.errorss wsgi.multithreads wsgi.multiprocesss wsgi.run_onces$ Environment missing required key: %rt HTTP_CONTENT_TYPEt HTTP_CONTENT_LENGTHs8 Environment should not have the key: %s (use %s instead)i t QUERY_STRINGs 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 likelyt .s9 Environmental variable %s is not a string: %r (value: %r)s# wsgi.version should be a tuple (%r)s wsgi.url_schemet httpt httpss wsgi.url_scheme unknown: %rt GETt HEADt POSTt OPTIONSt PUTt DELETEt TRACEs Unknown REQUEST_METHOD: %rt SCRIPT_NAMEt /s$ SCRIPT_NAME doesn't start with /: %rt PATH_INFOs" PATH_INFO doesn't start with /: %rt CONTENT_LENGTHi s Invalid CONTENT_LENGTH: %rsg One of SCRIPT_NAME or PATH_INFO are required (PATH_INFO should at least be '/' if SCRIPT_NAME is empty)sO SCRIPT_NAME cannot be '/'; it should instead be '', and PATH_INFO should be '/'( RQ RR ( RS RT RU RV RW RX RY ( R R, R t warningst warnR t keysR R t check_inputt check_errorst gett
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#
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| t n d S( Ns Status must be a string (not %r)i i i s) Status codes must be three characters: %rid s Status code is invalid: %ri t sj The status string (%r) should be a three-digit integer followed by a single space and a status explanation(
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R R, R t splitR R Re R^ R_ R ( R t status_codet
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status_int( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR o s "c C s_ t t | t k d | t | f i } x)| D]!} t t | t k d | t | f t t | d k | \ } } t | j d k d | d | | j <t d | k oÌ d | k d | t t j | d | t | j d
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j | r6 t d d | t
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j | j d f q6 q6 Wd S( Ns% Headers (%r) must be of type list: %rs1 Individual headers (%r) must be of type tuple: %ri R sy The Status header cannot be used; it conflicts with CGI script, and HTTP status is not given through headers (value: %r).s
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t :s, Header names may not contain ':' or '\n': %rs Bad header name: %rt -t _s# Names may not end in '-' or '_': %ri s# Bad header value: %r (bad char: %r)( R R, R R R t lowerR t header_ret searcht endswitht bad_header_value_ret group( R t header_namest itemt namet value( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR ~ s, c C s t | j d d d } d } xJ | D]B \ } } | j d k r) | | k rW d St d d | q) q) W| | k r t d d | n d S( Ni i iÌ i0 s content-typesJ Content-Type header found in a %s response, which must not return content.s, No Content-Type header found in headers (%s)( iÌ i0 ( Re Ri R Ro R ( R R t codet NO_MESSAGE_BODYRw Rx ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR s c C s? t | d k p$ t | t d k d | t | f d S( Ns exc_info (%r) is not a tuple: %r( ( R R R, ( R ( ( sX /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/wsgiref/validate.pyR ¥ s $c C s t t | t d d S( Nsv You should not return a string as your application iterator, instead return a single-item list containing that string.( R t
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