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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 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.
*/
class Session extends Session_Core {
/**
* Make sure that we have a session and group_ids cached in the session.
*/
static function load_user() {
try {
$session = Session::instance();
if (!($user = $session->get("user"))) {
$session->set("user", $user = Identity::guest());
}
// The installer cannot set a user into the session, so it just sets an id which we should
// upconvert into a user.
// @todo set the user name into the session instead of 2 and then use it to get the user object
if ($user === 2) {
$user = Instance::lookup_user_by_name("admin");
self::set_active_user($user);
$session->set("user", $user);
}
if (!$session->get("group_ids")) {
$ids = array();
foreach ($user->groups as $group) {
$ids[] = $group->id;
}
$session->set("group_ids", $ids);
}
} catch (Exception $e) {
try {
Session::instance()->destroy();
} catch (Exception $e) {
// We don't care if there was a problem destroying the session.
}
url::redirect(item::root()->abs_url());
}
}
/**
* Return the array of group ids this user belongs to
*
* @return array
*/
static function group_ids_for_active_user() {
return self::instance()->get("group_ids", array(1));
}
/**
* Return the active user. If there's no active user, return the guest user.
*
* @return User_Definition
*/
static function active_user() {
// @todo (maybe) cache this object so we're not always doing session lookups.
$user = self::instance()->get("user", null);
if (!isset($user)) {
// Don't do this as a fallback in the Session::get() call because it can trigger unnecessary
// work.
$user = Identity::guest();
}
return $user;
}
/**
* Change the active user.
* @param User_Definition $user
*/
static function set_active_user($user) {
$session = Session::instance();
$session->set("user", $user);
$session->delete("group_ids");
self::load_user();
}
}
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