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orm.php
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orm.php
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<?php defined('SYSPATH') or die('No direct access allowed.');
/**
* ORM Auth driver.
*
* @package Auth
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class Auth_AutoModeler_ORM extends Auth {
/**
* Checks if a session is active.
*
* @param mixed role name string, role ORM object, or array with role names
* @return boolean
*/
public function logged_in($role = NULL)
{
$status = FALSE;
// Get the user from the session
$user = $this->get_user();
if (is_object($user) AND $user instanceof Model_User AND $user->id)
{
// Everything is okay so far
$status = TRUE;
if ( ! empty($role))
{
// Multiple roles to check
if (is_array($role))
{
// Check each role
foreach ($role as $_role)
{
if ( ! is_numeric($_role))
{
$_role = AutoModeler_ORM::factory('role')->load(db::select()->where('name', '=', $_role))->id;
}
// If the user doesn't have the role
if ( ! $user->has('roles', $_role))
{
// Set the status false and get outta here
$status = FALSE;
break;
}
}
}
// Single role to check
else
{
if ( ! is_numeric($role))
{
// Load the role
$role = AutoModeler_ORM::factory('role')->load(db::select()->where('name', '=', $role))->id;
}
// Check that the user has the given role
$status = $user->has('roles', $role);
}
}
}
return $status;
}
/**
* Logs a user in.
*
* @param string username
* @param string password
* @param boolean enable autologin
* @return boolean
*/
protected function _login($user, $password, $remember)
{
if ( ! is_object($user))
{
$username = $user;
// Load the user
$user = AutoModeler_ORM::factory('user')->load(db::select()->where('username', '=', $username));
}
// If the passwords match, perform a login
if ($user->has('roles', 1) AND $user->password === $password)
{
if ($remember === TRUE)
{
// Create a new autologin token
$token = ORM::factory('user_token');
// Set token data
$token->user_id = $user->id;
$token->expires = time() + $this->_config['lifetime'];
$token->save();
// Set the autologin cookie
Cookie::set('authautologin', $token->token, $this->_config['lifetime']);
}
// Finish the login
$this->complete_login($user);
return TRUE;
}
// Login failed
return FALSE;
}
/**
* Forces a user to be logged in, without specifying a password.
*
* @param mixed username string, or user ORM object
* @return boolean
*/
public function force_login($user)
{
if ( ! is_object($user))
{
$username = $user;
// Load the user
$user = ORM::factory('user');
$user->where($user->unique_key($username), '=', $username)->find();
}
// Mark the session as forced, to prevent users from changing account information
$this->_session->set('auth_forced', TRUE);
// Run the standard completion
$this->complete_login($user);
}
/**
* Logs a user in, based on the authautologin cookie.
*
* @return mixed
*/
public function auto_login()
{
if ($token = Cookie::get('authautologin'))
{
// Load the token and user
$token = ORM::factory('user_token', array('token' => $token));
if ($token->loaded() AND $token->user->loaded())
{
if ($token->user_agent === sha1(Request::$user_agent))
{
// Save the token to create a new unique token
$token->save();
// Set the new token
Cookie::set('authautologin', $token->token, $token->expires - time());
// Complete the login with the found data
$this->complete_login($token->user);
// Automatic login was successful
return $token->user;
}
// Token is invalid
$token->delete();
}
}
return FALSE;
}
/**
* Gets the currently logged in user from the session (with auto_login check).
* Returns FALSE if no user is currently logged in.
*
* @return mixed
*/
public function get_user($default = NULL)
{
$user = parent::get_user();
if ($user === FALSE)
{
// check for "remembered" login
$user = $this->auto_login();
}
return $user;
}
/**
* Log a user out and remove any autologin cookies.
*
* @param boolean completely destroy the session
* @param boolean remove all tokens for user
* @return boolean
*/
public function logout($destroy = FALSE, $logout_all = FALSE)
{
// Set by force_login()
$this->_session->delete('auth_forced');
if ($token = Cookie::get('authautologin'))
{
// Delete the autologin cookie to prevent re-login
Cookie::delete('authautologin');
// Clear the autologin token from the database
$token = ORM::factory('user_token', array('token' => $token));
if ($token->loaded() AND $logout_all)
{
ORM::factory('user_token')->where('user_id', '=', $token->user_id)->delete_all();
}
elseif ($token->loaded())
{
$token->delete();
}
}
return parent::logout($destroy);
}
/**
* Get the stored password for a username.
*
* @param mixed username string, or user ORM object
* @return string
*/
public function password($user)
{
if ( ! is_object($user))
{
$username = $user;
// Load the user
$user = new Model_User($username);
}
return $user->password;
}
/**
* Complete the login for a user by incrementing the logins and setting
* session data: user_id, username, roles.
*
* @param object user ORM object
* @return void
*/
protected function complete_login($user)
{
$user->complete_login();
return parent::complete_login($user);
}
/**
* Compare password with original (hashed). Works for current (logged in) user
*
* @param string $password
* @return boolean
*/
public function check_password($password)
{
$user = $this->get_user();
if ($user === FALSE)
{
// nothing to compare
return FALSE;
}
$hash = $this->hash($password);
return $hash == $user->password;
}
} // End Auth ORM