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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.
*/
/**
* Provides a driver-based interface for managing users and groups.
*/
class Identity_Core {
protected static $instance;
protected static $active;
// Configuration
protected $config;
// Driver object
protected $driver;
/**
* Returns a singleton instance of Identity.
* There can only be one Identity driver configured at a given point
*
* @param string configuration
* @return Identity_Core
*/
static function & instance() {
if (!isset(self::$instance)) {
// Create a new instance
self::$instance = new Identity();
}
return self::$instance;
}
/**
* Returns a singleton instance of Identity.
* There can only be one Identity driver configured at a given point
*
* @param string configuration
* @return Identity_Core
*/
static function reset() {
self::$instance = new Identity();
}
/**
* Loads the configured driver and validates it.
*
* @return void
*/
public function __construct() {
$config = module::get_var("gallery", "identity_provider", "user");
// Test the config group name
if (($this->config = Kohana::config("identity.".$config)) === NULL) {
throw new Exception("@todo NO USER LIBRARY CONFIGURATION FOR: $config");
}
// Set driver name
$driver = "Identity_".ucfirst($this->config["driver"])."_Driver";
// Load the driver
if ( ! Kohana::auto_load($driver)) {
throw new Kohana_Exception("core.driver_not_found", $this->config["driver"],
get_class($this));
}
// Initialize the driver
$this->driver = new $driver($this->config["params"]);
// Validate the driver
if ( !($this->driver instanceof Identity_Driver)) {
throw new Kohana_Exception("core.driver_implements", $this->config["driver"],
get_class($this), "Identity_Driver");
}
Kohana::log("debug", "Identity Library initialized");
}
/**
* Return a list of installed Identity Drivers.
*
* @return boolean true if the driver supports updates; false if read only
*/
static function providers() {
if (empty(self::$active)) {
$drivers = new ArrayObject(array(), ArrayObject::ARRAY_AS_PROPS);
foreach (module::active() as $module) {
$module_name = $module->name;
if (file_exists(MODPATH . "{$module->name}/config/identity.php") &&
($info = module::info($module_name))) {
$drivers->$module_name = $info->description;
}
}
self::$active = $drivers;
}
return self::$active;
}
/**
* @see Identity_Driver::activate.
*/
static function activate() {
self::instance()->driver->activate();
}
/**
* @see Identity_Driver::deactivate.
*/
static function deactivate() {
self::instance()->driver->deactivate();
}
/**
* Determine if if the current driver supports updates.
*
* @return boolean true if the driver supports updates; false if read only
*/
static function is_writable() {
return !empty(self::instance()->config["allow_updates"]);
}
/**
* @see Identity_Driver::guest.
*/
static function guest() {
return self::instance()->driver->guest();
}
/**
* @see Identity_Driver::create_user.
*/
static function create_user($name, $full_name, $password) {
return self::instance()->driver->create_user($name, $full_name, $password);
}
/**
* @see Identity_Driver::is_correct_password.
*/
static function is_correct_password($user, $password) {
return self::instance()->driver->is_correct_password($user, $password);
}
/**
* @see Identity_Driver::lookup_user.
*/
static function lookup_user($id) {
return self::instance()->driver->lookup_user($id);
}
/**
* @see Identity_Driver::lookup_user_by_name.
*/
static function lookup_user_by_name($name) {
return self::instance()->driver->lookup_user_by_name($name);
}
/**
* @see Identity_Driver::create_group.
*/
static function create_group($name) {
return self::instance()->driver->create_group($name);
}
/**
* @see Identity_Driver::everybody.
*/
static function everybody() {
return self::instance()->driver->everybody();
}
/**
* @see Identity_Driver::registered_users.
*/
static function registered_users() {
return self::instance()->driver->everybody();
}
/**
* @see Identity_Driver::lookup_group.
*/
static function lookup_group($id) {
return self::instance()->driver->lookup_group($id);
}
/**
* @see Identity_Driver::lookup_group_by_name.
*/
static function lookup_group_by_name($name) {
return self::instance()->driver->lookup_group_by_name($name);
}
/**
* @see Identity_Driver::get_user_list.
*/
static function get_user_list($ids) {
return self::instance()->driver->get_user_list($ids);
}
/**
* @see Identity_Driver::groups.
*/
static function groups() {
return self::instance()->driver->groups();
}
} // End Identity
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