--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/aulib.php	Thu Dec 25 11:25:58 2008 +0000
@@ -0,0 +1,165 @@
+<?php
+class Aulib
+{
+	private $obj = NULL;
+	
+	function Aulib()
+	{
+		$this->obj =& get_instance();
+		$this->obj->load->model('aumodel');
+		$this->obj->config->load('auconfig');
+		if ($this->obj->config->item('au_language') != '') 
+			$curLang = $this->obj->config->item('au_language');
+		else
+			$curLang = $this->obj->config->item('language');    
+		$this->obj->lang->load('au', $curLang); 		
+	}
+
+	/*
+	 * Return "welcome" string with link to login page
+	 * Call this function every time on you main page 
+	 */
+	function getLoginLink()
+	{
+		$id = $this->getSessionId();
+		if($id)
+		{
+			$logoff_link = $this->obj->lang->line('logout_link_name');
+			$welcome_str = $this->obj->lang->line('welcome_string');
+			if($welcome_str != '')
+			{
+				$welcome_str = str_replace('%name%', $this->obj->aumodel->userInfo($id, 'name'), $welcome_str);
+				$welcome_str = str_replace('%logoff%', anchor('au/logout',$logoff_link), $welcome_str);
+			}
+			return $welcome_str;
+		}
+		else
+		{ 
+			$login_link = $this->obj->lang->line('login_link_name');
+			$registers_link = $this->obj->lang->line('registers_link_name');
+			$login_str = $this->obj->lang->line('login_string');
+			if($login_str != '')
+			{
+				$login_str = str_replace('%registers%', anchor('au/registers',$registers_link), $login_str);
+				$login_str = str_replace('%login%', anchor('au/login',$login_link), $login_str);
+			}
+			
+			return $login_str;
+		} 
+	}
+
+	/*
+	 * Return link for call back-end system
+	 * This back-end can help you manage users & groups
+	 */
+	function getManagerLink()
+	{
+		return anchor('aumanager', $this->obj->lang->line('manager_link_name'));
+	}
+
+	/*
+	 * function block for set/get session userID
+	 */
+	function setSessionId($id, $storable = FALSE)
+	{
+		if( $id < 1 ) 
+		{
+			$this->obj->session->unset_userdata('id');
+			$this->obj->session->unset_userdata('flash');
+		}
+		else
+		{
+			$this->obj->session->set_userdata('flash', !$storable);
+			$offset = (int) $this->obj->config->item('id_offset');
+			
+			 if($storable) 
+				$this->obj->session->set_userdata('id', $id * $offset);
+		 	else 
+		 	{
+		 		$this->obj->session->set_flashdata('id', $id * $offset);
+		 		$this->obj->session->set_flashdata('expire', time()+$this->obj->config->item('autologin_timeout'));
+		 	}
+		}
+	}
+function getSessionId()
+{ 
+		$this->keepSession();
+		if($this->obj->session->userdata('flash'))
+		{
+			if( !$this->obj->session->flashdata('id') )
+				return 0;		
+		}
+		$offset = (int) $this->obj->config->item('id_offset');
+		if(!$this->obj->session->userdata('flash'))
+			$real_id = ($this->obj->session->userdata('id') / $offset);
+		else
+			$real_id = ($this->obj->session->flashdata('id') / $offset);
+		if(ceil($real_id) != floor($real_id)) 
+		{
+			$this->logout();
+			return 0;
+		}
+			else 
+				return $real_id;
+	}
+	function keepSession()
+	{
+		if( ($this->obj->session->userdata('flash')) && ($this->obj->session->flashdata('expire') >= time()) ) 
+		{
+			$this->obj->session->keep_flashdata('id');
+			$this->obj->session->set_flashdata('expire', time()+$this->obj->config->item('autologin_timeout'));
+		}   		
+	}
+
+	/*
+	 * Return TRUE if user is logged on
+	 */
+	function isLogged() { return (bool) $this->getSessionId();	}
+
+	/*
+	 * Return TRUE if user is in group
+	 */
+	function isGroup($group_name) 
+	{
+		return ($this->obj->aumodel->getRefId('augroup', $group_name) == $this->obj->aumodel->userInfo($this->getSessionId(), 'group_id')); 
+	}
+
+	/*
+	 * Return TRUE if user has specified role
+	 */
+	function isRole($role_name) 
+	{
+		return ( $this->obj->aumodel->getRefId('aurole', $role_name) == $this->obj->aumodel->userInfo($this->getSessionId(), 'role_id') ); 
+	}
+
+	/*
+	 * Show "deny access" page
+	 */
+	function denyAccess()
+	{
+		$this->obj->load->helper('url');
+		redirect('au/denyaccess');
+	}
+
+	/*
+	 * Create and return captcha
+	 * Use standart CI plugin
+	 */
+	function getCaptcha()
+	{
+		$this->obj->load->helper('url');
+		$this->obj->load->plugin('captcha');
+		$vals = array(
+						'word' => '',
+						'img_path' => $this->obj->config->item('au_captcha_store_path'),
+						'img_url' => $this->obj->config->item('au_captcha_img_url'),
+						'font_path' => '/system/fonts/texb.ttf',
+						'img_width' => '120',
+						'img_height' => '40',
+						'expiration' => '7200'
+						);
+		$cap = create_captcha($vals);
+		return $cap;		
+	}
+}
+?>