$this->load->library('EasyOpenID');

<?php

class Openid_auth extends CI_Controller {

	public function __construct() {
        	parent::__construct();
        	// load the library
        	$this->load->library('EasyOpenID');
	}
	
	/**
	 * Starts the authentication proccess
	 *
	 * If successful, this function will redirect the page
	 * to the OpenID provider's authentication page.
	 */
	function try_auth()
	{
		// assuming that the provider is supplied in a URI segment,
		// fetch the provider ID.
		$provider = $this->uri->segment(3);
		
		// if we have a provider
		if ($provider)
		{
			$result = $this->easyopenid
				->provider($provider)                     // what provider you're using
				->return_to('openid_auth/finish_auth')    // where to redirect after authentication
				->required('email')                       // what data do we want
				->make_request();                         // start the authentication process
			
			// if an error occured
			if (is_int($result))
			{
				$error = $this->easyopenid->last_error();
				// handle error...
			}
		}
		else
		{
			// error, handle...
		}
	}
	
	/**
	 * Completes the authentication proccess
	 *
	 * This function collects the data sent back from the
	 * OpenID provider.
	 */
	function finish_auth()
	{
		$result = $this->easyopenid
			->fetch_response()    // collect the provider response
			->result();           // return the response for processing
		
		// if an error occured
		if (is_int($result))
		{
			$error = $this->easyopenid->last_error();
			// handle error...
		}
		else
		{
			$user_data = $result;
			// handle success...
		}
	}

}

/* End of file openid_auth.php */
/* Location: ./system/application/controllers/openid_auth.php */