<?php
/*
 * Gallery - a web based photo album viewer and editor
 * Copyright (C) 2000-2007 Bharat Mediratta
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
 */

GalleryCoreApi::requireOnce('modules/httpauth/classes/HttpAuthHelper.class');

/**
 * Get active user from username authenticated by web server.
 *
 * With server authentication Gallery delegates authentication to the web server and Gallery trusts
 * the given username from the 'REMOTE_USER' variable without doing any authentication on its own
 * (same as in GalleryEmbed).  It's the web server's responsibility to do the authentication in some
 * way.
 *
 * @package HttpAuth
 * @subpackage Classes
 * @author Jack Bates <ms419@freezone.co.uk>
 * @version $Revision: 15759 $
 */
class ServerAuthPlugin /* extends GalleryAuthPlugin */ {

    /**
     * @see GalleryAuthPlugin::getUser
     */
    function getUser() {
	$authtype = GalleryUtilities::getServerVar('AUTH_TYPE');
	$username = GalleryUtilities::getServerVar('REMOTE_USER');

	/* TODO: http://issues.apache.org/bugzilla/show_bug.cgi?id=38325 */
	if (empty($username)) {
	    $authtype = GalleryUtilities::getServerVar('REDIRECT_AUTH_TYPE');
	    $username = GalleryUtilities::getServerVar('REDIRECT_REMOTE_USER');
	}

	list ($ret, $user) = HttpAuthHelper::getUser($authtype, $username);
	if ($ret) {
	    return array($ret, null);
	}

	if (!empty($user)) {
	    $ret = HttpAuthHelper::regenerateSessionIfNecessary($user);
	    if ($ret) {
		return array($ret, null);
	    }
	}

	return array(null, $user);
    }
}
?>