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<?php
/**
* Custom Authentication manager permits authentication using
* a string token saved in the cookie.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @version $Id$
* @package Demos
* @since 3.1
*/
class TrackerAuthManager extends TAuthManager
{
/**
* @const string signon token cookie name.
*/
const SignonCookieName = 'time-tracker-signon';
/**
* Performs the real authentication work. Overrides and calls parent
* implementation. Trys to authenticate using token saved in cookie.
* @param mixed parameter to be passed to OnAuthenticate event
*/
public function onAuthenticate($param)
{
parent::onAuthenticate($param);
$currentUser = $this->Application->User;
if(!$currentUser || $currentUser->IsGuest)
$this->authenticateFromCookie($param);
}
/**
* If the user is not set or is still a guest, try to authenticate the user
* using a string token saved in the cookie if any.
* @param mixed parameter to be passed to OnAuthenticate event
*/
protected function authenticateFromCookie($param)
{
$cookie = $this->Request->Cookies[self::SignonCookieName];
if(!is_null($cookie))
{
$daos = $this->getApplication()->getModule('daos');
$userDao = $daos->getDao('UserDao');
$user = $userDao->validateSignon($cookie->Value);
if($user instanceof TimeTrackerUser)
$this->updateCredential($user);
}
}
/**
* Changes the user credentials.
* @param TUser new user details.
*/
public function updateCredential($user)
{
$user->IsGuest = false;
$this->updateSessionUser($user);
$this->Application->User = $user;
}
/**
* Generate a token to be saved in the cookie for later authentication.
* @param TimeTrackerUser user details.
*/
public function rememberSignon($user)
{
$daos = $this->getApplication()->getModule('daos');
$userDao = $daos->getDao('UserDao');
$token = $userDao->createSignonToken($user);
$cookie = new THttpCookie(self::SignonCookieName, $token);
$cookie->Expire = strtotime('+1 month');
$this->Response->Cookies[] = $cookie;
}
/**
* Logs out the user and delete the token from cookie.
*/
public function logout()
{
parent::logout();
$cookie = new THttpCookie(self::SignonCookieName,'');
$this->Response->Cookies[] = $cookie;
}
}
?>
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