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-rw-r--r--system/helpers/download_helper.php101
1 files changed, 55 insertions, 46 deletions
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
index 1145688ae..a8c59c2c0 100644
--- a/system/helpers/download_helper.php
+++ b/system/helpers/download_helper.php
@@ -1,27 +1,37 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
+ * NOTICE OF LICENSE
+ *
+ * Licensed under the Open Software License version 3.0
+ *
+ * This source file is subject to the Open Software License (OSL 3.0) that is
+ * bundled with this package in the files license.txt / license.rst. It is
+ * also available through the world wide web at this URL:
+ * http://opensource.org/licenses/OSL-3.0
+ * If you did not receive a copy of the license and are unable to obtain it
+ * through the world wide web, please send an email to
+ * licensing@ellislab.com so we can send you a copy immediately.
+ *
* @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
+ * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
-// ------------------------------------------------------------------------
-
/**
* CodeIgniter Download Helpers
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
- * @author ExpressionEngine Dev Team
+ * @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/helpers/download_helper.html
*/
@@ -35,73 +45,72 @@
* @access public
* @param string filename
* @param mixed the data to be downloaded
+ * @param bool wether to try and send the actual file MIME type
* @return void
*/
if ( ! function_exists('force_download'))
{
- function force_download($filename = '', $data = '')
+ function force_download($filename = '', $data = '', $set_mime = FALSE)
{
if ($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, '.'))
+ // Set the default MIME type to send
+ $mime = 'application/octet-stream';
+
+ if ($set_mime === TRUE)
{
- return FALSE;
- }
+ /* If we're going to detect the MIME type,
+ * we'll need a file extension.
+ */
+ if (FALSE === strpos($filename, '.'))
+ {
+ return FALSE;
+ }
- // Grab the file extension
- $x = explode('.', $filename);
- $extension = end($x);
+ $extension = explode('.', $filename);
+ $extension = end($extension);
- // 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');
- }
+ // Load the mime types
+ if (defined('ENVIRONMENT') && 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];
+ // Only change the default MIME if we can find one
+ if (isset($mimes[$extension]))
+ {
+ $mime = is_array($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="'.$filename.'"');
+ header('Expires: 0');
+ header('Content-Transfer-Encoding: binary');
+ header('Content-Length: '.strlen($data));
+
+ // Internet Explorer-specific headers
+ if (isset($_SERVER['HTTP_USER_AGENT']) && strpos($_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);
}
}
-
/* End of file download_helper.php */
-/* Location: ./system/helpers/download_helper.php */ \ No newline at end of file
+/* Location: ./system/helpers/download_helper.php */