<?php
/**
 * authentication handler
 * 
 * @author gERD Schaufelberger <gerd@exit0.net>
 * @copyright 2004 by http://wombat.exit0.net
 * @package wombatSite
 * @subpackage user
 */
 
/**
 * main authentication controller
 *
 * loads authentication modules and collects user data for wbSite
 *
 * @version 1.0.0
 * @package wombatSite
 * @subpackage user
 */
class wbAuth
{
   /**
	* patSession object
	* @var	object	$_sess
	*/
	var	$_sess;
    
   /**
	* login handöer
	* @var	object	$_sess
	*/
	var	$_handler;

   /**
	* is user authenticated
	* @var	object	$_authenticated
	*/
	var	$_authenticated = false;

   /**
	* user data 
	* @var	array	$_sess
	*/
	var	$_userData = array();
	
   /**
	* authentication config
	* @var	array	$_config
	*/
	var	$_config = array();
	
	
   /**
	* constructor
	*
	* @access public
	*/
    function __construct( $config ) {
        $this->_config  =   $config;
        
		$this->_sess	=&	wbFactory::singleton( 'patSession' );
		
		$this->_authenticated	=	$this->_sess->get( 'wbauth_authenticated' );
		if( $this->_authenticated ) {
		  $this->_userData    =   $this->_sess->get( 'wbauth_userdata' );
		}
    }

   /**
	* abAuth constructor wrapper for PHP4
	*
	* @access public
	* @see __construct()
	*/
    function wbAuth( $config ) {
		$this->__construct( $config );
    }
    
   /**
	* is authenticated
	*
	* @access public
	* @return boolean true if user is logged in
	*/
    function isAuthenticated() {
        return $this->_authenticated;
    }
    
   /**
	* recieve user data
	*
	* @access public
	* @return array $data 
	*/
    function getUserData() {
        return $this->_userData;
    }
    
   /**
	* try to login
	*
	* @access public
	* @param string $user user name
	* @param string $password user password
	* @return boolean $result true if user is logged in
	*/
    function login( $user, $password ) {
        $res    =   $this->_loadHandler();
        if( patErrorManager::isError( $res ) ) {
            return $res;
        }

        $res    =   $this->_handler->login( $user, $password );
        if( patErrorManager::isError( $res ) ) {
            return $res;
        }
        
        // login failed
        if( !$res ) {
            return false;
        }
        
        // store data in current instance
        $this->_authenticated   =   true;
        $this->_userData        =   $this->_handler->getUserData();
        
        // remeber in session
        $this->_sess->set( 'wbauth_authenticated', true );
        $this->_sess->set( 'wbauth_userdata', $this->_userData );
        return true;
    }

   /**
	* logout user
	*
	* @access public
	* @return boolean $result true on success
	*/
    function logoff() {
        $res    =   $this->_loadHandler();
        if( patErrorManager::isError( $res ) ) {
            return $res;
        }

        $res    =   $this->_handler->logoff();
        if( patErrorManager::isError( $res ) ) {
            return $res;
        }
        
        $this->_authenticated   =   false;
        $this->_userData        =   array();
        $this->_sess->set( 'wbauth_authenticated', false );
        $this->_sess->set( 'wbauth_userdata', array() );
        return true;
    }

   /**
	* abAuth constructor wrapper for PHP4
	*
	* @access public
	* @see __construct()
	*/
    function _loadHandler() {
        $authHandler    =   'Wombat';
        if( isset( $this->_config['handler'] ) ) {
            $authHandler    =   $this->_config['handler'];
        }
        
        $params =   array( 'config' => $this->_config );
        $this->_handler =&  wbFactory::singleton( 'wbAuth_' . $authHandler, $params );
        if( patErrorManager::isError( $this->_handler ) ) {
            return $this->_handler;
        }
        
        return true;
    }
}
?>