ó ³Ebc@s^dZddlmZddlmZddlmZddlmZddlmZddl m Z dd l m Z ydd l mZWn!ek r­dd lmZnXd efd „ƒYZd efd„ƒYZdd„Zdefd„ƒYZdefd„ƒYZdefd„ƒYZedefd„ƒYƒZdefd„ƒYZdS(s‹ WSGI Protocol Linter ==================== This module provides a middleware that performs sanity checks on the behavior of the WSGI server and application. It checks that the :pep:`3333` WSGI spec is properly implemented. It also warns on some common HTTP errors such as non-empty responses for 304 status codes. .. autoclass:: LintMiddleware :copyright: 2007 Pallets :license: BSD-3-Clause iÿÿÿÿ(twarni(timplements_iterator(tPY2(t string_types(tHeaders(tis_entity_header(t FileWrapper(turlparset WSGIWarningcBseZdZRS(s Warning class for WSGI warnings.(t__name__t __module__t__doc__(((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRst HTTPWarningcBseZdZRS(s Warning class for HTTP warnings.(R R R (((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR "sicCs9t|ƒtk r5td|t|ƒjftƒndS(Ns'%s' requires strings, got '%s'(ttypetstrRR R(tcontexttobjt stacklevel((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyt check_string&st InputStreamcBs5eZd„Zd„Zd„Zd„Zd„ZRS(cCs ||_dS(N(t_stream(tselftstream((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyt__init__/scGs`t|ƒdkr(tdtddƒn(t|ƒdkrPtdtddƒn|jj|ŒS(NisŸWSGI does not guarantee an EOF marker on the input stream, thus making calls to 'wsgi.input.read()' unsafe. Conforming servers may never return from this call.Riis2Too many parameters passed to 'wsgi.input.read()'.(tlenRRRtread(Rtargs((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR2s  cGslt|ƒdkr(tdtddƒn4t|ƒdkrPtdtddƒn tdƒ‚|jj|ŒS(Nis_Calls to 'wsgi.input.readline()' without arguments are unsafe. Use 'wsgi.input.read()' instead.Riis~'wsgi.input.readline()' was called with a size hint. WSGI does not support this, although it's available on all major servers.s5Too many arguments passed to 'wsgi.input.readline()'.(RRRt TypeErrorRtreadline(RR((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRCs   cCsCyt|jƒSWn+tk r>tdtddƒtdƒSXdS(Ns'wsgi.input' is not iterable.Ri((titerRRRR(R((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyt__iter__Vs  cCs$tdtddƒ|jjƒdS(Ns(The application closed the input stream!Ri(RRRtclose(R((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR]s(R R RRRRR(((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR.s     t ErrorStreamcBs5eZd„Zd„Zd„Zd„Zd„ZRS(cCs ||_dS(N(R(RR((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRcscCs!td|ƒ|jj|ƒdS(Nswsgi.error.write()(RRtwrite(Rts((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR!fs cCs|jjƒdS(N(Rtflush(R((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR#jscCs"x|D]}|j|ƒqWdS(N(R!(Rtseqtline((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyt writelinesms cCs$tdtddƒ|jjƒdS(Ns(The application closed the error stream!Ri(RRRR(R((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRqs(R R RR!R#R&R(((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR bs     t GuardedWritecBseZd„Zd„ZRS(cCs||_||_dS(N(t_writet_chunks(RR!tchunks((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRws cCs7td|ƒ|jj|ƒ|jjt|ƒƒdS(Nswrite()(RR(R!R)tappendR(RR"((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyt__call__{s (R R RR,(((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR'vs tGuardedIteratorcBs5eZd„Zd„Zd„Zd„Zd„ZRS(cCsU||_tr$t|ƒj|_nt|ƒj|_t|_||_||_ dS(N( t _iteratorRRtnextt_nextt__next__tFalsetclosedt headers_setR*(RtiteratorR4R*((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRƒs   cCs|S(N((R((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRscCsq|jrtdtddƒn|jƒ}|jsJtdtddƒntd|ƒ|jjt|ƒƒ|S(Ns Iterated over closed 'app_iter'.Ris8The application returned before it started the response.sapplication iterator items( R3RRR0R4RR*R+R(Rtrv((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR1s     cCsot|_t|jdƒr+|jjƒn|jrk|j\}}t|jƒ}|jddt ƒ}|dkrÛxL|D]D\}}|j ƒ}|dkrzt |ƒrzt d|t ƒqzqzW|rht dt ƒqhqkd |koòd kns|d kr@|d kr#t d |t ƒn|rht d|t ƒqhqk|dk rk||krkt dtƒqkndS(NRscontent-lengthR i0texpiresscontent-locations'Entity header %r found in 304 response.s#304 responses must not have a body.idiÈiÌis/%r responses must have an empty content length.s"%r responses must not have a body.sGContent-Length and the number of bytes sent to the client do not match.(R7scontent-location(tTrueR3thasattrR.RR4tsumR*tgettinttlowerRRR tNoneR(Rt status_codetheaderst bytes_senttcontent_lengthtkeyt_value((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR¡s8     (  cCs5|js1ytdtƒWq1tk r-q1XndS(Ns4Iterator was garbage collected before it was closed.(R3RRt Exception(R((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyt__del__Ès   (R R RRR1RRF(((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR-s    'tLintMiddlewarecBsDeZdZd„Zd„Zd„Zd„Zd„Zd„ZRS(s¡Warns about common errors in the WSGI and HTTP behavior of the server and wrapped application. Some of the issues it check are: - invalid status codes - non-bytestrings sent to the WSGI server - strings returned from the WSGI application - non-empty conditional responses - unquoted etags - relative URLs in the Location header - unsafe calls to wsgi.input - unclosed iterators Error information is emitted using the :mod:`warnings` module. :param app: The WSGI application to wrap. .. code-block:: python from werkzeug.middleware.lint import LintMiddleware app = LintMiddleware(app) cCs ||_dS(N(tapp(RRH((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRésc Cs t|ƒtk r(tdtddƒnx4dD],}||kr/td |tddƒq/q/W|ddkr…tdtddƒn|jddƒ}|jddƒ}|rÙ|ddkrÙtd|tddƒn|r |ddkr td|tddƒndS(Ns/WSGI environment is not a standard Python dict.RitREQUEST_METHODt SERVER_NAMEt SERVER_PORTs wsgi.versions wsgi.inputs wsgi.errorsswsgi.multithreadswsgi.multiprocesss wsgi.run_onces%Required environment key %r not foundiiis"Environ is not a WSGI 1.0 environ.t SCRIPT_NAMEtt PATH_INFOt/s-'SCRIPT_NAME' does not start with a slash: %rs+'PATH_INFO' does not start with a slash: %r( RIRJRKs wsgi.versions wsgi.inputs wsgi.errorsswsgi.multithreadswsgi.multiprocesss wsgi.run_once(ii(R tdictRRR;(RtenvironRCt script_namet path_info((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyt check_environìsD    cCs td|ƒ|jddƒd}t|ƒdksB|jƒ r[ttdƒddƒnt|ƒdks}|ddkr–ttd ƒddƒnt|ƒ}|d krÇttd ƒddƒnt|ƒt k ròttd ƒddƒnx¿|D]·}t|ƒt k s#t|ƒd kr<ttdƒddƒn|\}}t|ƒt k slt|ƒt k r…ttdƒddƒn|j ƒdkrùttdƒddƒqùqùW|dk rét |t ƒ réttdƒddƒnt|ƒ}|j|ƒ||fS(Ntstatusiiis Status code must be three digitsRit seInvalid value for status %r. Valid status strings are three digits, a space and a status explanationidsstatus code < 100 detectedsheader list is not a listis Headers must tuple 2-item tuplessheader items must be stringssFThe status header is not supported due to conflicts with the CGI spec.sinvalid value for exc_info(RtsplitR>RtisdigitRRR<R tlistttupleRR=t isinstanceRt check_headers(RRUR@texc_infoR?titemtnametvalue((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pytcheck_start_responses< "     $ $   cCsé|jdƒ}|dk rŸ|jdƒr_|jdƒrRttdƒddƒn|d}n|d |d ko~d knsŸttd ƒddƒqŸn|jd ƒ}|dk råt|ƒjsåttd ƒddƒqåndS(NtetagsW/sw/s%weak etag indicator should be upcase.Riiiiÿÿÿÿt"sunquoted etag emitted.tlocations*absolute URLs required for location header(sW/sw/(R;R>t startswithRR Rtnetloc(RR@RbRd((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR\Hs     $  cCs)t|tƒr%tdtddƒndS(NsŸThe application returned astring. The response will send one character at a time to the client, which will kill performance. Return a list or iterable instead.Ri(R[RRR(Rtapp_iter((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pytcheck_iteratoras csât|ƒdkr(tdtddƒn|rDtdtddƒn|\}‰ˆj|ƒt|dƒ|dRaR'(RtkwargsRUR@R](R*R4Rtstart_response(sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pytchecking_start_responses   ( RRRRTRR RRHRhR-(RRRiRQRkRg((R*R4RRjsp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyR,ks     ( R R R RRTRaR\RhR,(((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyRGÒs  , 0  N(R twarningsRt_compatRRRtdatastructuresRthttpRtwsgiRt urllib.parseRt ImportErrortWarningRR RtobjectRR R'R-RG(((sp/var/www/html/facial-emotion-detection-webapp-main/flask/lib/python2.7/site-packages/werkzeug/middleware/lint.pyts(  4 P