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| <title>Apache module mod_cgi</title> |
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| <h1>Module mod_cgi</h1> |
| |
| This module is contained in the <code>mod_cgi.c</code> file, and |
| is compiled in by default. It provides for execution of CGI scripts. |
| Any file with mime type <code>application/x-httpd-cgi</code> will be |
| processed by this module. |
| <!--%plaintext <?INDEX {\tt application/x-httpd-cgi} mime type> --> |
| <!--%plaintext <?INDEX CGI scripts> --> |
| |
| <h2>Summary</h2> |
| Any file that has the mime type <code>application/x-httpd-cgi</code> |
| will be treated as a CGI script, and run by the server, with its output |
| being returned to the client. Files acquire this type either by |
| having a name ending in an extension defined by the |
| <A HREF="mod_mime.html#addtype">AddType</A> directive, or by being in |
| a <A HREF="mod_alias.html#scriptalias">ScriptAlias</A> directory. <p> |
| |
| When the server invokes a CGI script, it will add a variable called |
| <code>DOCUMENT_ROOT</code> to the environment. This variable will contain the |
| value of the <A HREF="core.html#documentroot">DocumentRoot</A> |
| configuration variable. |
| |
| <h2>CGI Environment variables</h2> |
| The server will set the CGI environment variables as described in the CGI |
| specification, with the following provisos: |
| <dl> |
| <dt>REMOTE_HOST |
| <dd>This will only be set if the server has not been compiled with |
| <code>MINIMAL_DNS</code>. |
| <dt>REMOTE_IDENT |
| <dd>This will only be set if |
| <A HREF="core.html#identitycheck">IdentityCheck</A> is set to <code>on</code>. |
| <dt>REMOTE_USER |
| <dd>This will only be set if the CGI script is subject to authentication. |
| </dl> |
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