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<?php
/*
* Copyright 2013 Florian "Bluewind" Pritz <bluewind@server-speed.net>
*
* Licensed under GPLv3
* (see COPYING for full license text)
*
*/
abstract class Duser_Driver extends CI_Driver {
// List of optional functions or function group that are implemented
//
// Possible values are names of functions already implemented in this
// abstract class or the function groups listed below.
//
// Possible function groups are:
// - can_register_new_users
// - can_reset_password
public $optional_functions = array();
/*
* The array should contain the following keys:
* - username VARCHAR
* - userid INT > 0
*
* @return mixed array on success, false on failure
*/
abstract public function login($username, $password);
public function username_exists($username) {
return false;
}
}
class Duser extends CI_Driver_Library {
protected $_adapter = null;
protected $valid_drivers = array(
'duser_db'
);
function __construct()
{
// TODO: read config
$this->_adapter = 'db';
}
// require an optional function to be implemented
public function require_implemented($function) {
if (!$this->is_implemented($function)) {
show_error(""
."Optional function '".$function."' not implemented in user adapter '".$this->_adapter."'. "
."Requested functionally unavailable.");
}
}
// check if an optional function is implemented
public function is_implemented($function) {
if (in_array($function, $this->{$this->_adapter}->optional_functions)) {
return true;
}
return false;
}
public function login($username, $password)
{
$login_info = $this->{$this->_adapter}->login($username, $password);
if ($login_info === false) {
return false;
}
$CI =& get_instance();
$CI->session->set_userdata('logged_in', true);
$CI->session->set_userdata('username', $login_info["username"]);
$CI->session->set_userdata('userid', $login_info["userid"]);
return true;
}
public function username_exists($username)
{
$this->require_implemented(__FUNCTION__);
if ($username === false) {
return false;
}
return $this->{$this->_adapter}->username_exists($username);
}
}
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