<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

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

/**
 * CodeIgniter Download Helpers
 *
 * @package		CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/helpers/download_helper.html
 */

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

/**
 * Force Download
 *
 * Generates headers that force a download to happen
 *
 * @access	public
 * @param	string	filename
 * @param	mixed	the data to be downloaded
 * @return	void
 */
if ( ! function_exists('force_download'))
{
	function force_download($filename = '', $data = '')
	{
		if ($filename == '' OR $data == '')
		{
			return FALSE;
		}

		// Try to determine if the filename includes a file extension.
		// We need it in order to set the MIME type
		if (FALSE === strpos($filename, '.'))
		{
			return FALSE;
		}

		// Grab the file extension
		$x = explode('.', $filename);
		$extension = end($x);

		// Load the mime types
		if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'))
		{
			include(APPPATH.'config/'.ENVIRONMENT.'/mimes.php');
		}
		elseif (is_file(APPPATH.'config/mimes.php'))
		{
			include(APPPATH.'config/mimes.php');
		}

		// Set a default mime if we can't find it
		if ( ! isset($mimes[$extension]))
		{
			$mime = 'application/octet-stream';
		}
		else
		{
			$mime = (is_array($mimes[$extension])) ? $mimes[$extension][0] : $mimes[$extension];
		}

		// Generate the server headers
		if (strpos($_SERVER['HTTP_USER_AGENT'], "MSIE") !== FALSE)
		{
			header('Content-Type: "'.$mime.'"');
			header('Content-Disposition: attachment; filename="'.$filename.'"');
			header('Expires: 0');
			header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
			header("Content-Transfer-Encoding: binary");
			header('Pragma: public');
			header("Content-Length: ".strlen($data));
		}
		else
		{
			header('Content-Type: "'.$mime.'"');
			header('Content-Disposition: attachment; filename="'.$filename.'"');
			header("Content-Transfer-Encoding: binary");
			header('Expires: 0');
			header('Pragma: no-cache');
			header("Content-Length: ".strlen($data));
		}

		exit($data);
	}


}


function push_file($path, $name) {
	// make sure it's a file before doing anything!
	if (is_file($path)) {
		// required for IE
		if (ini_get('zlib.output_compression')) {
			ini_set('zlib.output_compression', 'Off');
		}

		// get the file mime type using the file extension
		$this->load->helper('file');

		$mime = get_mime_by_extension($path);

		// Build the headers to push out the file properly.
		header('Pragma: public');     // required
		header('Expires: 0');         // no cache
		header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
		header('Last-Modified: ' . gmdate('D, d M Y H:i:s', filemtime($path)) . ' GMT');
		header('Cache-Control: private', false);
		header('Content-Type: ' . $mime);  // Add the mime type from Code igniter.
		header('Content-Disposition: attachment; filename="' . basename($name) . '"');  // Add the file name
		header('Content-Transfer-Encoding: binary');
		header('Content-Length: ' . filesize($path)); // provide file size
		header('Connection: close');
		readfile($path); // push it out
		exit();
	}
}


/* End of file download_helper.php */
/* Location: ./system/helpers/download_helper.php */