Chapter 14. Apache HTTP Server

201

14.5.56.

AddLanguage

AddLanguage

associates filename extensions with specific content languages. This directive is mostly

useful for content negotiation, when the server returns one of several documents based on the client's

language preference as set in their browser.

14.5.57.

LanguagePriority

LanguagePriority

allows you to set precedence for different languages in which to serve files,

which will be in effect if the client expressed no preference for language in their browser.

14.5.58.

AddType

Use the

AddType

directive to define MIME type and file extension pairs. For example, if you are

using PHP4, your Web server is using the

AddType

directive to make your Web server recognize files

with PHP extensions (

.php4

,

.php3 .phtml .php

) as PHP MIME types. The following directive

tells the Apache HTTP Server to recognize the

.shtml

file extension:

AddType text/html .shtml

AddHandler server parsed .shtml

You will need to include the above line within the virtual host tags for any virtual hosts which should

allow server side includes.

14.5.59.

AddHandler

AddHandler

maps file extensions to specific handlers. For example, the

cgi script

handler can

be used matched with the extension

.cgi

to automatically treat a file ending with

.cgi

as a CGI

script. This will work, even for files outside of the

ScriptAlias

directory, as long as you follow the

instructions provided here.

You have a CGI

AddHandler

line in your

httpd.conf

file:

AddHandler cgi script .cgi

You will have to uncomment the line. Then Apache will execute CGI scripts for files ending in

.cgi

,

even if they are outside of the

ScriptAlias

, which is set by default to locate your

/cgi bin/

directory in

/var/www/cgi bin/

.

You will also need to set

ExecCGI

as an

Options

for any directory containing a CGI script. See

Section 14.5.23 for more information about setting

ExecCGI

for a directory. Additionally, you will

need to make sure the permissions are set correctly for the CGI scripts and the directories containing

CGI scripts. CGI scripts and the entire directory path to the scripts must be set to 0755.

You will need to add the same

AddHandler

line to your

VirtualHost

setup, if you are using virtual

hosts and you want them to also recognize CGI scripts outside the

ScriptAlias

.

In addition to CGI scripts, your Web server also uses

AddHandler

to process server parsed HTML

and imagemap files.

14.5.60.

Action

Action

allows you to specify a MIME content type and CGI script pair, so that whenever a file of

that media type is requested, a particular CGI script will be executed.