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<?php defined('SYSPATH') or die('No direct script access.');
/**
* Download helper class.
*
* $Id: download.php 1725 2008-01-17 16:38:59Z PugFish $
*
* @package Download Helper
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class download {

/**
* Force a download of a file to the user's browser. This function is
* binary-safe and will work with any MIME type that Kohana is aware of.
*
* @param string a file path or file name
* @param mixed data to be sent if the filename does not exist
* @return void
*/
public static function force($filename = '', $data = '')
{
static $user_agent;

if ($filename == '')
return FALSE;

if (is_file($filename))
{
// Get the real path
$filepath = str_replace('\\', '/', realpath($filename));

// Get extension
$extension = pathinfo($filepath, PATHINFO_EXTENSION);

// Remove directory path from the filename
$filename = end(explode('/', $filepath));

// Set filesize
$filesize = filesize($filepath);
}
else
{
// Grab the file extension
$extension = end(explode('.', $filename));

// Try to determine if the filename includes a file extension.
// We need it in order to set the MIME type
if (empty($data) OR $extension === $filename)
return FALSE;

// Set filesize
$filesize = strlen($data);
}

$mime = 'application/octet-stream';

// Generate the server headers
@header('Content-Type: '.$mime);
@header('Content-Disposition: attachment; filename="'.$filename.'"');
@header('Content-Transfer-Encoding: binary');
@header('Expires: 0');
@header('Content-Length: '.$filesize);
@header('Pragma: no-cache');

if (isset($filepath))
{
// Open the file
$handle = fopen($filepath, 'rb');

// Send the file data
fpassthru($handle);

// Close the file
fclose($handle);
}
else
{
// Send the file data
echo $data;
}
}

} // End download
(10-10/37)