/**
* Starts the application.
*
* Starts to process the request. The request will be processed using these
* steps:
* - If `TI_REQURLKEY` is not defined, this function will call enableWebUI.
* This should not happen after the installation succeeded.
* - If the request path starts with `TI_ADMIN_PATH` and a matching file in
* the `assets` folder exists, it will be served.
* - If the request path starts with `TI_ADMIN_PATH`, enableWebUI will be
* called in order to provide the administration interface.
* - If the requested path is considered equal to the base path of this
* application, this function will process the request as specified with
* the `home_action` option.
* - Finally, this function uses {@link Database\LinksTableAdapter::resolvePath}
* to find the target the given path should redirect to.
* - If the previous step fails, a 404 error will be issued and a related
* page will be shown.
*/
public static function start()
{
$currURL = URL::getCurrent();
if (!defined('TI_REQURLKEY')) {
$path = isset($_GET['_webuipath']) ? $_GET['_webuipath'] : '';
return self::enableWebUI($path, $_GET);
}
$router = Router::fromGeneratedURL($currURL, TI_REQURLKEY);
$match = $router->match(TI_ADMIN_PATH . '/assets/%%');
if ($match !== false) {
$assetdir = realpath(Application::$rootDir . '/assets/');
$filepath = realpath($assetdir . '/' . $match[0]);
if ($filepath !== false) {
if (strpos($filepath, $assetdir) !== 0) {
die('Attack attempt: directory traversal attack');
}
if (file_exists($filepath) && is_file($filepath)) {
header('Content-Type: ' . MimeContentTypes::getForFile($filepath));
readfile($filepath);
exit;
}
}
}
$match = $router->match(TI_ADMIN_PATH . '/%%?');
if ($match !== false) {
return self::enableWebUI($match[0], $router->getParameters());
}
$dbc = self::dbConnection();
$path = implode('/', $router->getPathElements());
if ($path === '') {
$opts = $dbc->options()->getOptions(array('home_action', 'home_target'));
$target = WebUI\Page::getURL('');
switch ($opts['home_action']) {
case 'redirect':
$target = URL::parse($opts['home_target'], 'http');
break;
}
$target->redirectTo();
} else {
$link = $dbc->links()->resolvePath($path);
if (!$link) {
$nfp = WebUI\NotFoundPage::getInstance($path, array());
self::startWebUI($nfp, array());
exit;
}
header('Location: ' . $link->resolved, 302);
}
}
