54 lines
1.9 KiB
TeX
54 lines
1.9 KiB
TeX
\section{CGI server}\label{sec:cgi-server}
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%
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\begin{description}
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\item[Used files:] cgi-server.scm
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\item[Name of the package:] cgi-server
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\end{description}
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%
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\subsection{Variables}
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\defvar{cgi-default-bin-path}{string}
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\begin{desc}
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This variable contains the path for scripts. Its value is
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\codex{/bin:/usr/bin:/usr/ucb:/usr/bsd:/usr/local/bin}
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\end{desc}
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\subsection{Procedures}
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\begin{defundesc}{cgi-handler}{bin-dir}{path-handler}
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Returns a path handler (see \ref{httpd:path-handlers} for details
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about path handlers) for cgi-scripts located in
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\semvar{bin-dir}. The scripts are called as specified by
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CGI/1.1\footnote{see
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\ex{http://hoohoo.ncsa.uiuc.edu/cgi/interface.html} for a sort of
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specification.}.
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\begin{itemize}
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\item Various environment variables are set (like
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\ex{QUERY\_STRING} or \ex{REMOTE\_HOST}).
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\item ISINDEX queries get their arguments as command line arguments.
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\item Scripts are handled differently according to their name:
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\begin{itemize}
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\item If the name of the script starts with `\ex{nph-}', its reply
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is read, the RFC~822-fields like ``Content-Type'' and ``Status''
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are parsed and the client is sent back a real HTTP reply,
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containing the rest of the script's output.
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\item If the name of the script doesn't start with `\ex{nph-}',
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its output is sent back to the client directly. If its return code
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is not zero, an error message is generated.
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\end{itemize}
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\end{itemize}
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\end{defundesc}
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\begin{defundesc}{initialise-request-invariant-cgi-env}{}{\noreturn}
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Initializes the environment variables that are invariant from
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cgi-call to cgi-call in order to save calculation time. Call this
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procedure before you start your httpd. You have to do this, if you
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use cgi-scripts, that read out the environment variables \ex{PATH},
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\ex{SERVER\_SOFTWARE}, \ex{SERVER\_NAME} or \ex{GATEWAY\_INTERFACE}.
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\end{defundesc}
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