105 lines
2.5 KiB
PHP
105 lines
2.5 KiB
PHP
<?php defined('SYSPATH') OR die('No direct access allowed.');
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/**
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* Download helper class.
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*
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* $Id: download.php 3769 2008-12-15 00:48:56Z zombor $
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*
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* @package Core
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class download_Core {
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/**
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* Force a download of a file to the user's browser. This function is
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* binary-safe and will work with any MIME type that Kohana is aware of.
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*
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* @param string a file path or file name
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* @param mixed data to be sent if the filename does not exist
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* @param string suggested filename to display in the download
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* @return void
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*/
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public static function force($filename = NULL, $data = NULL, $nicename = NULL)
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{
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if (empty($filename))
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return FALSE;
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if (is_file($filename))
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{
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// Get the real path
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$filepath = str_replace('\\', '/', realpath($filename));
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// Set filesize
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$filesize = filesize($filepath);
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// Get filename
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$filename = substr(strrchr('/'.$filepath, '/'), 1);
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// Get extension
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$extension = strtolower(substr(strrchr($filepath, '.'), 1));
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}
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else
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{
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// Get filesize
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$filesize = strlen($data);
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// Make sure the filename does not have directory info
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$filename = substr(strrchr('/'.$filename, '/'), 1);
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// Get extension
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$extension = strtolower(substr(strrchr($filename, '.'), 1));
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}
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// Get the mime type of the file
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$mime = Kohana::config('mimes.'.$extension);
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if (empty($mime))
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{
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// Set a default mime if none was found
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$mime = array('application/octet-stream');
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}
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// Generate the server headers
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header('Content-Type: '.$mime[0]);
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header('Content-Disposition: attachment; filename="'.(empty($nicename) ? $filename : $nicename).'"');
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header('Content-Transfer-Encoding: binary');
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header('Content-Length: '.sprintf('%d', $filesize));
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// More caching prevention
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header('Expires: 0');
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if (Kohana::user_agent('browser') === 'Internet Explorer')
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{
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// Send IE headers
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header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
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header('Pragma: public');
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}
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else
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{
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// Send normal headers
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header('Pragma: no-cache');
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}
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// Clear the output buffer
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Kohana::close_buffers(FALSE);
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if (isset($filepath))
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{
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// Open the file
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$handle = fopen($filepath, 'rb');
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// Send the file data
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fpassthru($handle);
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// Close the file
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fclose($handle);
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}
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else
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{
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// Send the file data
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echo $data;
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}
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}
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} // End download
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