iTP Secure WebServer System Administrator's Guide (iTPWebSvr 6.0+)

Using Common Gateway Interface (CGI) Programs
iTP Secure WebServer System Administrator’s Guide—523346-002
8-7
Mapping MIME Types to Server Classes
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Define an entire directory of CGI programs (such as /cgi-bin/).
To define such a directory, use a DefaultType command in a Region directive.
For example, the directive
Region /cgi-bin/* {
DefaultType application/x-httpd-guardian
}
specifies that in the directory /cgi-bin/, any file that has no extension should be
treated as a CGI program.
Mapping MIME Types to Server Classes
In the configuration shipped with the iTP Secure WebServer, files that have the
extension .cgi are processed by the generic-CGI server class. The generic-CGI
server class launches a CGI process for each request. The server class uses the
NonStop TS/MP Pathsend facility to communicate with the httpd process but uses a
standard NCSA CGI interface to communicate with CGI programs.
Programs that have the extension .pway are treated as NonStop TS/ MP server
classes, and the file name is mapped into a server class name. The server class name
consists of the file name portion of the path as the server class name, excluding the
extension. For example, the following becomes the server class userform:
/usr/tandem/webserver/root/userform.pway
Because the server class uses explicit naming conventions, names of CGI programs
that have .pway extensions must start with an alphabetic character, must be no more
than 15 characters in length, and must be unique to each system.
Also, server class names (unlike OSS file names) are case-insensitive. Make sure that
the names you specify for CGI processes are unique regardless of case.
You map MIME types to server classes by using the PathwayMimeMap configuration
command, shown in Example 8-1 on page 8-8. The example contains the server MIME
types table and is derived from the table shipped with NCSA’s public domain HTTP
server. The PathwayMimeMap directives specify that programs that have the
extension .cgi are to be processed by the generic-CGI server class, and programs
that have the extension .ab_demo are to be processed by server classes defined to the
$ZAB PATHMON process. The MimeType and PathwayMimeMap for server-side
includes cause the iTP Secure WebServer to invoke the generic-CGI server class to
process SSI directives that use the exec command to run CGI programs. (For
information about the exec command, see SSI Directives on page 7-51.)
All CGI programs have the MIME type of application/x-httpd-guardian. The
other types in Example 8-1 have no significance for CGI programs.