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kr�e�ndS(s�CGI-savvy HTTP Server.

This module builds on SimpleHTTPServer by implementing GET and POST
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If the os.fork() function is not present (e.g. on Windows),
os.popen2() is used as a fallback, with slightly altered semantics; if
that function is not present either (e.g. on Macintosh), only Python
scripts are supported, and they are executed by the current process.

In all cases, the implementation is intentionally naive -- all
requests are executed sychronously.

SECURITY WARNING: DON'T USE THIS CODE UNLESS YOU ARE INSIDE A FIREWALL
-- it may execute arbitrary Python code or external programs.

Note that status code 200 is sent prior to execution of a CGI script, so
scripts cannot send other status codes such as 302 (redirect).
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cCs`t|j�}|jdd�}|| ||d}}||jkr\||f|_tStS(s2Test whether self.path corresponds to a CGI script.

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If any exception is raised, the caller should assume that
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The default implementation tests whether the normalized url
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r�d}#nX| jL|!d<| jMd=| jMd>| jMd?|�}$|jj#�d@kr�|#dkr�|j8j9|#�}%nd}%xBt7j7|j8jNgggd�dr>|j8jNjOd�s�Pq�q�W|$jP|%�\}&}'|j3jQ|&�|'r}|j:dA|'�n|$jRjS�|$jTjS�|$jU}(|(r�|j:d5|(�n
|jGdB�dS(DsExecute a CGI script.Riit?ti�sNo such CGI script (%r)Ni�s#CGI script is not a plain file (%r)s&CGI script is not a Python script (%r)s!CGI script is not executable (%r)tSERVER_SOFTWAREtSERVER_NAMEsCGI/1.1tGATEWAY_INTERFACEtSERVER_PROTOCOLtSERVER_PORTtREQUEST_METHODt	PATH_INFOtPATH_TRANSLATEDtSCRIPT_NAMEtQUERY_STRINGtREMOTE_HOSTtREMOTE_ADDRt
authorizationii����t	AUTH_TYPEtbasict:tREMOTE_USERtCONTENT_TYPEscontent-lengthtCONTENT_LENGTHtreferertHTTP_REFERERtaccepts

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user-agenttHTTP_USER_AGENTtcookies, tHTTP_COOKIEi�sScript output followst+t t=sCGI script exit status %#xisw.exei����i����s-uscommand: %ststdintstdouttstderrtenvtposts%ssCGI script exited OK(R)R*R2R8R:R4(VRRtlenttranslate_pathRRtisdirt	partitiontexistsRtisfileRt	have_forkthave_popen2thave_popen3Rtcopytdeepcopytenvirontversion_stringtservertserver_nametprotocol_versiontstrtserver_porttcommandturllibtunquotetaddress_stringtclient_addresstheaderst	getheadertsplittbase64tbinasciiRtdecodestringtErrort
typeheadertNonettypetgetallmatchingheaderstappendtstriptjointfiltert
getheaderst
setdefaultt
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nobody_uidtwfiletflushRtwaitpidtselecttrfiletreadt	log_errortsetuidterrortdup2tfilenotexecvethandle_errortrequestt_exitt
subprocesstsysRtendswithtlog_messagetlist2cmdlinetintt	TypeErrort
ValueErrortPopentPIPEt_socktrecvtcommunicatetwriteR@tcloseR?t
returncode()RtdirtrestRtitnextdirtnextrestt	scriptdirt_tquerytscriptt
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Implements something akin to RFC-2396 5.2 step 6 to parse relative paths.
    The utility of this function is limited to is_cgi method and helps
    preventing some security attacks.

Returns: The reconstituted URL, which will always start with a '/'.

Raises: IndexError if too many '..' occur within the path.

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