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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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If any exception is raised, the caller should assume that
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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
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authorizationii����t	AUTH_TYPEtbasict:tREMOTE_USERtCONTENT_TYPEscontent-lengthtCONTENT_LENGTHtreferertHTTP_REFERERtaccepts

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setdefaultt
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nobody_uidtwfiletflushRtwaitpidtselecttrfiletreadt	log_errortsetuidterrortdup2tfilenotexecvethandle_errortrequestt_exitt
subprocesstsysRtendswithtlog_messagetlist2cmdlinetintt	TypeErrort
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returncode()RtdirtrestRtitnextdirtnextrestt	scriptdirt_tquerytscriptt
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Implements something akin to RFC-2396 5.2 step 6 to parse relative paths.
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    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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