diff options
Diffstat (limited to 'system/helpers/download_helper.php')
| -rw-r--r-- | system/helpers/download_helper.php | 81 |
1 files changed, 42 insertions, 39 deletions
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php index aea948d81..a8c59c2c0 100644 --- a/system/helpers/download_helper.php +++ b/system/helpers/download_helper.php @@ -1,13 +1,13 @@ -<?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: @@ -25,8 +25,6 @@ * @filesource */ -// ------------------------------------------------------------------------ - /** * CodeIgniter Download Helpers * @@ -47,67 +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 header('Content-Type: "'.$mime.'"'); header('Content-Disposition: attachment; filename="'.$filename.'"'); header('Expires: 0'); - header("Content-Transfer-Encoding: binary"); - header("Content-Length: ".strlen($data)); - header('Pragma: no-cache'); + header('Content-Transfer-Encoding: binary'); + header('Content-Length: '.strlen($data)); - // Internet Explorer-specific headers. - if (isset($_SERVER['HTTP_USER_AGENT']) && strpos($_SERVER['HTTP_USER_AGENT'], "MSIE") !== FALSE) + // Internet Explorer-specific headers + if (isset($_SERVER['HTTP_USER_AGENT']) && strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== FALSE) { header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); header('Pragma: public'); } + else + { + header('Pragma: no-cache'); + } 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 */ |