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<?php
require_once('Login.class.php');
require_once('Database.class.php');
require_once('Group.class.php');
require_once('User.class.php');
class Auth extends Model {
/**********************************************************************\
* Multiton stuff *
\**********************************************************************/
private static $users = array();
public static function getInstance($uid) {
if (!isset(self::$users[$uid])) {
$type = Database::getInstance()->getStatus($uid);
switch ($type) {
case 0: // unactivated user
case 1: // user
case 2: $obj = new User($uid); // admin
case 3: $obj = new Group($uid);
case 4: $obj = new Auth($uid); // deleted
}
self::$users[$uid] = $obj;
}
return self::$users[$uid];
}
/**********************************************************************\
* Static stuff *
\**********************************************************************/
public static function isNameLegal($name) {
// Current rules:
// * Not in "$illegal_names"
// * Does not contain '.'
// * Fewer than 256 characters
$illegal_names = array('', 'new', 'index', 'all');
return true
&& (!in_array($name, $illegal_names))
&& (strpos($name,'.')===false)
&& (strpos($name,'!')===false)
&& (strlen($name)<256);
}
/**********************************************************************\
* Class stuff *
\**********************************************************************/
protected $uid = false;
public function __construct($uid) {
parent::__construct();
$this->uid = $uid;
}
public function getUID() {
return $this->uid;
}
/**********************************************************************\
* The 'auth' table. *
\**********************************************************************/
// Row Type ////////////////////////////////////////////////////////////
/**
* @return 0=unverified 1=user 2=admin 3=group 4=deleted
*/
protected function getType() {
$type = $this->db->getStatus($this->uid);
return $type;
}
protected function setType($type) {
$logged_in_uid = Login::isLoggedIn();
$logged_in_obj = Auth::getInstance($logged_in_uid);
$is_admin = $logged_in_obj->isAdmin();
if (!$is_admin) return false;
return $this->db->setStatus($this->uid, $type);
}
public function isUser() {
$type = $this->getType();
return ($type===1) || ($type===2);
}
public function isAdmin() {
$type = $this->getType();
return ($type===2);
}
public function isGroup() {
$type = $this->getType();
return ($type===3);
}
public function setUser($is_user) {
$is_user = ($is_user?true:false);
if ($this->isUser() != $is_user) {
$this->setType($is_user?1:0);
}
}
public function setAdmin($is_admin) {
$is_admin = ($is_admin?true:false);
$is_user = $this->isUser();
$this->setType($is_admin?2:($is_user?1:0));
}
public function delete() {
$this->setType(4);
}
// Permissions /////////////////////////////////////////////////////////
public function canRead() {
$logged_in_uid = Login::isLoggedIn();
$is_me = ($logged_in_uid === $this->uid);
$logged_in_obj = Auth::getInstance($logged_in_uid);
$is_user = $logged_in_obj->isUser();
return ($is_me || $is_user);
}
public function canEdit() {
$logged_in_uid = Login::isLoggedIn();
$is_me = ($logged_in_uid === $this->uid);
$logged_in_obj = Auth::getInstance($logged_in_uid);
$is_admin = $logged_in_obj->isAdmin();
return ($is_me || $is_admin);
}
// [user|group]name ////////////////////////////////////////////////////
public function getName() {
if ($this->db===null) {
return false;
} else {
return $this->db->getUsername($this->uid);
}
}
public function setName($new_name) {
if (!$this->canEdit()) return false;
if (!self::isNameLegal($new_name)) return false;
return $this->db->setUsername($this->uid, $new_name);
}
/**********************************************************************\
* The 'users' table. *
\**********************************************************************/
public function getConf($setting) {
if (!$this->canRead()) return false;
return $this->db->getUserConf($this->uid, $setting);
}
public function setConf($setting, $value) {
if (!$this->canEdit()) return false;
return $this->db->setUserConf($this->uid, $setting, $value);
}
public function getConfArray($setting) {
$string = $this->getConf($setting);
return $this->db->valueToArray($string);
}
public function setConfArray($setting, $list) {
$string = $this->db->arrayToValue($list);
return $this->setConf($setting, $string);
}
}
|
