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4.8. Handlers
A handler
is a piece of code built into Apache that performs certain actions
when a file with a particular MIME or handler type is called. For
example, a file with the handler type cgi-script
needs to be executed as a CGI script. This is illustrated in
... /site.filter.
Apache has a number of handlers built in, and others can be added
with the Actions command (see the next section).
The built-in handlers are as follows:
- send-as-is
Sends the file as is, with HTTP headers
(mod_asis). - cgi-script
Executes the file (mod_cgi). Note that
Options ExecCGI must also be
set. - imap-file
Uses the file as an imagemap (mod_imap). - server-info
Gets the server's configuration (mod_info). - server-status
Gets the server's current status
(mod_status). - server-parsed
Parses server-side includes (mod_include). Note
that Options Includes must also
be set. - type-map
Parses the file as a type map file for content negotiation
(mod_negotiation). -
isapi-isa ( Win32 only)
 Causes ISA DLLs placed in the document root directory to be loaded
when their URLs are accessed. Options
ExecCGI must be active in the directory that
contains the ISA. Check the Apache documentation, since this feature
is under development (mod_isapi).
The corresponding directives follow.
4.8.1. AddHandler
AddHandler handler-name extension1 extension2 ...
Server config, virtual host, directory, .htaccess
AddHandler
wakes up an existing handler and maps
the filename(s) extension1,
etc., to
handler-name. You
might specify the following in your Config file:
AddHandler cgi-script cgi bzq
From then on, any file with the extension .cgi
or .bzq would be treated as an executable CGI
script.
4.8.2. SetHandler
SetHandler handler-name
Directory, .htaccess
This
does the same thing as AddHandler, but applies the
transformation specified by handler-name
to all files in the <Directory>,
<Location>, or <Files>
section in which it is placed, or in the
.htaccess directory. For instance, in Chapter 11, "What's Going On?", we write:
<Location /status>
<Limit get>
order deny, allow
allow from 192.168.123.1
deny from all
</Limit>
SetHandler server-status
</Location>
 |  |  | | 4.7. suEXEC on Unix |  | 4.9. Actions |
Copyright © 2001 O'Reilly & Associates. All rights reserved.
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