modules/file_force/file_force.module

<?php
// $Id$

/**
 * File Force module for Drupal
 * by Garrett Albright
 *
 * Cheap caffeine goes in. Quality code comes out.
 */

/**
 * Implementation of hook_menu().
 * Note that the D5 and D6 versions of this module are identical in all ways,
 * which is why the function below contains elements for both versions.
 */

function file_force_menu() {
	return array(
		'files/download' => array( // Drupal 6
			'path' => 'files/download', // Drupal 5
			'title' => 'File Force',
			'description' => 'Force visitors to download requested files',
			'callback' => 'file_force_go', // Drupal 5
			'page callback' => 'file_force_go', // Drupal 6
			'access' => array('access content'), // Drupal 5
			'access arguments' => array('access content'), // Drupal 6
			'type' => MENU_CALLBACK,
		),
	);
}

/**
 * Implementation of hook_file_download().
 * This is what adds the headers which activates the force downloading.
 */

function file_force_file_download($filepath) {
	if (!defined('FILE_FORCE_ACTIVE')) {
		// Our menu hook wasn't called, so we should ignore this.
		return NULL;
	}
	return array(
		'Content-Type: application/octet-stream',
		'Content-Disposition: attachment; filename="' . basename($filepath) . '";',
		// Content-Length is also a good header to send, as it allows the browser to
		// display a progress bar correctly. It looks like on D5, the Upload module
		// does this too if it's installed, but not on D6. So let's do it ourselves
		// just in case.
		// There's a trick for determining the file size for files over 2 GB. Nobody
		// should be using this module with files that large, but… the sprintf()
		// trickery makes sure the value is correct for files larger than 2GB. See
		// note at http://php.net/filesize
		'Content-Length: ' . sprintf('%u', filesize($filepath)),
	);
}	

/**
 * The function that does stuff. This makes the file path correspond to the
 * correct filesystem path, lets us know that we should respond when our
 * hook_file_download() implementation is called, and finally calls
 * file_download() to start the download process.
 */

function file_force_go() {
	$args = func_get_args();
	$filepath = file_directory_path() . '/' . implode('/', $args);
	define('FILE_FORCE_ACTIVE', TRUE);
	file_download($filepath);
}
1	<?php
2	// $Id$
3
4	/**
5	* File Force module for Drupal
6	* by Garrett Albright
7	*
8	* Cheap caffeine goes in. Quality code comes out.
9	*/
10
11	/**
12	* Implementation of hook_menu().
13	* Note that the D5 and D6 versions of this module are identical in all ways,
14	* which is why the function below contains elements for both versions.
15	*/
16
17	function file_force_menu() {
18	return array(
19	'files/download' => array( // Drupal 6
20	'path' => 'files/download', // Drupal 5
21	'title' => 'File Force',
22	'description' => 'Force visitors to download requested files',
23	'callback' => 'file_force_go', // Drupal 5
24	'page callback' => 'file_force_go', // Drupal 6
25	'access' => array('access content'), // Drupal 5
26	'access arguments' => array('access content'), // Drupal 6
27	'type' => MENU_CALLBACK,
28	),
29	);
30	}
31
32	/**
33	* Implementation of hook_file_download().
34	* This is what adds the headers which activates the force downloading.
35	*/
36
37	function file_force_file_download($filepath) {
38	if (!defined('FILE_FORCE_ACTIVE')) {
39	// Our menu hook wasn't called, so we should ignore this.
40	return NULL;
41	}
42	return array(
43	'Content-Type: application/octet-stream',
44	'Content-Disposition: attachment; filename="' . basename($filepath) . '";',
45	// Content-Length is also a good header to send, as it allows the browser to
46	// display a progress bar correctly. It looks like on D5, the Upload module
47	// does this too if it's installed, but not on D6. So let's do it ourselves
48	// just in case.
49	// There's a trick for determining the file size for files over 2 GB. Nobody
50	// should be using this module with files that large, but… the sprintf()
51	// trickery makes sure the value is correct for files larger than 2GB. See
52	// note at http://php.net/filesize
53	'Content-Length: ' . sprintf('%u', filesize($filepath)),
54	);
55	}
56
57	/**
58	* The function that does stuff. This makes the file path correspond to the
59	* correct filesystem path, lets us know that we should respond when our
60	* hook_file_download() implementation is called, and finally calls
61	* file_download() to start the download process.
62	*/
63
64	function file_force_go() {
65	$args = func_get_args();
66	$filepath = file_directory_path() . '/' . implode('/', $args);
67	define('FILE_FORCE_ACTIVE', TRUE);
68	file_download($filepath);
69	}