my own user registeration and login library!

[eluser]A.M.F[/eluser]
the third part of my application is the user_lib.php library. in there i have the login checking and the auth() function that checks if the user has authoration and to see if he is looged with cookies or sessions.


user_lib.php

Code:

class User_lib
{

    var $object;
    
    function User_lib()
    {
        $this->object =& get_instance();
    }

    
    // --------------------------------------------------------------------

    /**
     * Checks if the login information is true
     *
     * @access    public
     * @param    string    name
     * @param    string    password
     *
     * @return    boolean    true or false if login correct
     */
    function login($user, $pass)
    {
        /*see if the username and the password matches, if so return true*/

        //$info['password'] = md5(sha1($info['password'])); //encrypting the password

        $this->object->db->from('users');
        $this->object->db->where('username', $user);
        $this->object->db->where('password', $pass);
    
        $query = $this->object->db->get();
            
        if ($query->num_rows() == 0)  //שם המשתמש או הסיסמא אינם נכונים
        {
            return FALSE;
        }
        else
        {
            $x = $query->row();

            if ($pass != $x->password) //checks if the pass entered matches the password
            {
                return FALSE;
            }
            else
            {
                return TRUE;
            }
        }
    }


    // --------------------------------------------------------------------

    /**
     * Checks if the login information is true
     *
     * @access    public
     * @param    string    cookie name
     * @param    string    cookie password
     *
     * @return    boolean    true or false has authoratoin
     */  
    function auth()
    {
        
        $cook_name = get_cookie('name');
        $cook_pass = get_cookie('user');

        if ((($cook_name == '')) || (($cook_pass == ''))) //don't have cookies? maybe have sessions
        {
            if ($this->sess_auth()) //cuz user don't want the browser to remember him
            {
                return TRUE;
            }
            else
            {
                return FALSE;
            }
        }

        if (($cook_name != '') && ($cook_pass != '')) //coockie way
        {
            if ($this->login($cook_name, $cook_pass) == TRUE)
            {
                return TRUE;
            }
            else
            {
                return FALSE;
            }
        }

        else //not loged
        {
            return FALSE;
        }
    }

    //
    //Session authoration
    //
    function sess_auth()
    {
        $sess_name = $this->object->session->userdata('name');
        $sess_pass = $this->object->session->userdata('user');

        
        if (isset($sess_name) && isset($sess_pass)) //session way
        {
            if ($this->login($sess_name, $sess_pass) == TRUE)
            {
                return TRUE;
            }
            else
            {
                return FALSE;
            }
        }

        else //not loged
        {
            return FALSE;
        }
    }
}

and that is it. what do u think?

thank u for ur time!