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59c06b17 CS |
1 | <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
2 | /** | |
3 | * CodeIgniter | |
4 | * | |
5 | * An open source application development framework for PHP 5.1.6 or newer | |
6 | * | |
7 | * @package CodeIgniter | |
8 | * @author ExpressionEngine Dev Team | |
9 | * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. | |
10 | * @license http://codeigniter.com/user_guide/license.html | |
11 | * @link http://codeigniter.com | |
12 | * @since Version 1.0 | |
13 | * @filesource | |
14 | */ | |
15 | ||
16 | // ------------------------------------------------------------------------ | |
17 | ||
18 | /** | |
19 | * CodeIgniter Download Helpers | |
20 | * | |
21 | * @package CodeIgniter | |
22 | * @subpackage Helpers | |
23 | * @category Helpers | |
24 | * @author ExpressionEngine Dev Team | |
25 | * @link http://codeigniter.com/user_guide/helpers/download_helper.html | |
26 | */ | |
27 | ||
28 | // ------------------------------------------------------------------------ | |
29 | ||
30 | /** | |
31 | * Force Download | |
32 | * | |
33 | * Generates headers that force a download to happen | |
34 | * | |
35 | * @access public | |
36 | * @param string filename | |
37 | * @param mixed the data to be downloaded | |
38 | * @return void | |
39 | */ | |
40 | if ( ! function_exists('force_download')) | |
41 | { | |
42 | function force_download($filename = '', $data = '') | |
43 | { | |
44 | if ($filename == '' OR $data == '') | |
45 | { | |
46 | return FALSE; | |
47 | } | |
48 | ||
49 | // Try to determine if the filename includes a file extension. | |
50 | // We need it in order to set the MIME type | |
51 | if (FALSE === strpos($filename, '.')) | |
52 | { | |
53 | return FALSE; | |
54 | } | |
55 | ||
56 | // Grab the file extension | |
57 | $x = explode('.', $filename); | |
58 | $extension = end($x); | |
59 | ||
60 | // Load the mime types | |
61 | if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes.php')) | |
62 | { | |
63 | include(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'); | |
64 | } | |
65 | elseif (is_file(APPPATH.'config/mimes.php')) | |
66 | { | |
67 | include(APPPATH.'config/mimes.php'); | |
68 | } | |
69 | ||
70 | // Set a default mime if we can't find it | |
71 | if ( ! isset($mimes[$extension])) | |
72 | { | |
73 | $mime = 'application/octet-stream'; | |
74 | } | |
75 | else | |
76 | { | |
77 | $mime = (is_array($mimes[$extension])) ? $mimes[$extension][0] : $mimes[$extension]; | |
78 | } | |
79 | ||
80 | // Generate the server headers | |
81 | if (strpos($_SERVER['HTTP_USER_AGENT'], "MSIE") !== FALSE) | |
82 | { | |
83 | header('Content-Type: "'.$mime.'"'); | |
84 | header('Content-Disposition: attachment; filename="'.$filename.'"'); | |
85 | header('Expires: 0'); | |
86 | header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); | |
87 | header("Content-Transfer-Encoding: binary"); | |
88 | header('Pragma: public'); | |
89 | header("Content-Length: ".strlen($data)); | |
90 | } | |
91 | else | |
92 | { | |
93 | header('Content-Type: "'.$mime.'"'); | |
94 | header('Content-Disposition: attachment; filename="'.$filename.'"'); | |
95 | header("Content-Transfer-Encoding: binary"); | |
96 | header('Expires: 0'); | |
97 | header('Pragma: no-cache'); | |
98 | header("Content-Length: ".strlen($data)); | |
99 | } | |
100 | ||
101 | exit($data); | |
102 | } | |
103 | } | |
104 | ||
105 | ||
106 | /* End of file download_helper.php */ | |
107 | /* Location: ./system/helpers/download_helper.php */ |