/**
* Get the location of the correct version of a MediaWiki web
* entry-point file given environmental variables such as the server name.
* This function should only be called on web views.
*
* If the wiki doesn't exist, then wmf-config/missing.php will
* be included (and thus displayed) and PHP will exit.
*
* If it does, then this function also has some other effects:
* (a) Sets the $IP global variable (path to MediaWiki)
* (b) Sets the MW_INSTALL_PATH environmental variable
* (c) Changes PHP's current directory to the directory of this file.
*
* @param $file string File path (relative to MediaWiki dir)
* @param $wiki string Force the Wiki ID rather than detecting it
* @return string Absolute file path with proper MW location
*/
function getMediaWiki($file, $wiki = null)
{
global $IP;
require_once __DIR__ . '/MWMultiVersion.php';
if ($wiki === null) {
$scriptName = @$_SERVER['SCRIPT_NAME'];
$serverName = @$_SERVER['SERVER_NAME'];
# Upload URL hit (to upload.wikimedia.org rather than wiki of origin)...
if ($scriptName === '/w/thumb.php' && $serverName === 'upload.wikimedia.org') {
$multiVersion = MWMultiVersion::initializeForUploadWiki($_SERVER['PATH_INFO']);
# Regular URL hit (wiki of origin)...
} else {
$multiVersion = MWMultiVersion::initializeForWiki($serverName);
}
} else {
$multiVersion = MWMultiVersion::initializeFromDBName($wiki);
}
# Wiki doesn't exist yet?
if ($multiVersion->isMissing()) {
header("Cache-control: no-cache");
// same hack as CommonSettings.php
include MEDIAWIKI_DEPLOYMENT_DIR . '/wmf-config/missing.php';
exit;
}
# Get the MediaWiki version running on this wiki...
$version = $multiVersion->getVersion();
# Get the correct MediaWiki path based on this version...
$IP = MEDIAWIKI_DEPLOYMENT_DIR . "/{$version}";
chdir($IP);
putenv("MW_INSTALL_PATH={$IP}");
return "{$IP}/{$file}";
}
