<?php
/**
* This overwrites the DOKU_CONF. Each animal gets its own configuration and data directory.
*
* The farm ($farm) can be any directory and needs to be set.
* Animals are direct subdirectories of the farm directory.
* There are two different approaches:
*  * An .htaccess based setup can use any animal directory name:
*    http://domain.org/<path_to_farm>/subdir/ will need the subdirectory '$farm/subdir/'.
*  * A virtual host based setup needs animal directory names which have to reflect
*    the domain name: If an animal resides in http://www.domain.org:8080/mysite/test/,
*    directories that will match range from '$farm/8080.www.domain.org.mysite.test/'
*    to a simple '$farm/domain/'.
*/

$farm = '/var/www/farm'; // SET THIS to your farm directory

if(!defined('DOKU_CONF')) define('DOKU_CONF', conf_path($farm));
if(!defined('DOKU_FARM')) define('DOKU_FARM', false);


/**
 * Find the appropriate configuration directory.
 *
 * If the .htaccess based setup is used, the configuration directory can be
 * any subdirectory of the farm directory.
 *
 * Otherwise try finding a matching configuration directory by stripping the
 * website's hostname from left to right and pathname from right to left. The
 * first configuration file found will be used; the remaining will ignored.
 * If no configuration file is found, return the default confdir './conf'.
 *
 * @author Anika Henke <anika@selfthinker.org>
 * @author htaccess part based on http://www.dokuwiki.org/doku.php?id=tips:farm2#preload.php1
 * @author virtual host part based on conf_path() from Drupal.org's /includes/bootstrap.inc
 *   (see http://cvs.drupal.org/viewvc/drupal/drupal/includes/bootstrap.inc?view=markup)
 */
function conf_path($farm) {

    // htaccess based
    if(isset($_REQUEST['animal'])) {
        if(!is_dir($farm.'/'.$_REQUEST['animal'])) nice_die("Sorry! This Wiki doesn't exist!");
        if(!defined('DOKU_FARM')) define('DOKU_FARM', 'htaccess');
        return $farm.'/'.$_REQUEST['animal'].'/conf/';
    }

    // virtual host based
    $uri = explode('/', $_SERVER['SCRIPT_NAME'] ? $_SERVER['SCRIPT_NAME'] : $_SERVER['SCRIPT_FILENAME']);
    $server = explode('.', implode('.', array_reverse(explode(':', rtrim($_SERVER['HTTP_HOST'], '.')))));
    for ($i = count($uri) - 1; $i > 0; $i--) {
        for ($j = count($server); $j > 0; $j--) {
            $dir = implode('.', array_slice($server, -$j)) . implode('.', array_slice($uri, 0, $i));
            if(is_dir("$farm/$dir/conf/")) {
                if(!defined('DOKU_FARM')) define('DOKU_FARM', 'virtual');
                return "$farm/$dir/conf/";
            }
        }
    }

    // default conf directory in farm
    if(is_dir("$farm/default/conf/")) {
        if(!defined('DOKU_FARM')) define('DOKU_FARM', 'default');
        return "$farm/default/conf/";
    }
    // farmer
    return DOKU_INC.'conf/';
}


/* Use default config files and local animal config files */
$config_cascade = array(
    'main' => array(
        'default'   => array(DOKU_INC.'conf/dokuwiki.php'),
        'local'     => array(DOKU_CONF.'local.php'),
        'protected' => array(DOKU_CONF.'local.protected.php'),
    ),
    'acronyms'  => array(
        'default'   => array(DOKU_INC.'conf/acronyms.conf'),
        'local'     => array(DOKU_CONF.'acronyms.local.conf'),
    ),
    'entities'  => array(
        'default'   => array(DOKU_INC.'conf/entities.conf'),
        'local'     => array(DOKU_CONF.'entities.local.conf'),
    ),
    'interwiki' => array(
        'default'   => array(DOKU_INC.'conf/interwiki.conf'),
        'local'     => array(DOKU_CONF.'interwiki.local.conf'),
    ),
    'license' => array(
        'default'   => array(DOKU_INC.'conf/license.php'),
        'local'     => array(DOKU_CONF.'license.local.php'),
    ),
    'mediameta' => array(
        'default'   => array(DOKU_INC.'conf/mediameta.php'),
        'local'     => array(DOKU_CONF.'mediameta.local.php'),
    ),
    'mime'      => array(
        'default'   => array(DOKU_INC.'conf/mime.conf'),
        'local'     => array(DOKU_CONF.'mime.local.conf'),
    ),
    'scheme'    => array(
        'default'   => array(DOKU_INC.'conf/scheme.conf'),
        'local'     => array(DOKU_CONF.'scheme.local.conf'),
    ),
    'smileys'   => array(
        'default'   => array(DOKU_INC.'conf/smileys.conf'),
        'local'     => array(DOKU_CONF.'smileys.local.conf'),
    ),
    'wordblock' => array(
        'default'   => array(DOKU_INC.'conf/wordblock.conf'),
        'local'     => array(DOKU_CONF.'wordblock.local.conf'),
    ),
);