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Name	Size	Permission
.pkexec	[ DIR ]	drwxr-xr-x
GCONV_PATH=.	[ DIR ]	drwxr-xr-x
backup	[ DIR ]	drwxrwxrwx
classes	[ DIR ]	drwxrwxrwx
db	[ DIR ]	drwxrwxrwx
lang	[ DIR ]	drwxrwxrwx
pix	[ DIR ]	drwxrwxrwx
tests	[ DIR ]	drwxrwxrwx
.mad-root	0 B	-rw-r--r--
download_folder.php	2.03 KB	-rwxrwxrwx
edit.php	3.08 KB	-rwxrwxrwx
edit_form.php	1.5 KB	-rwxrwxrwx
index.php	3.44 KB	-rwxrwxrwx
lib.php	27.79 KB	-rwxrwxrwx
locallib.php	1.56 KB	-rwxrwxrwx
mod_form.php	4.62 KB	-rwxrwxrwx
module.js	1.69 KB	-rwxrwxrwx
pwnkit	10.99 KB	-rwxr-xr-x
readme.txt	1.04 KB	-rwxrwxrwx
renderer.php	7.15 KB	-rwxrwxrwx
settings.php	1.42 KB	-rwxrwxrwx
styles.css	76 B	-rwxrwxrwx
version.php	1.17 KB	-rwxrwxrwx
view.php	2.71 KB	-rwxrwxrwx

Code Editor : download_folder.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Folder download
 *
 * @package   mod_folder
 * @copyright 2015 Andrew Hancox <andrewdchancox@googlemail.com>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(__DIR__ . "/../../config.php");

$id = required_param('id', PARAM_INT);  // Course module ID.
$cm = get_coursemodule_from_id('folder', $id, 0, true, MUST_EXIST);

$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);

require_course_login($course, true, $cm);
$context = context_module::instance($cm->id);
require_capability('mod/folder:view', $context);

$folder = $DB->get_record('folder', array('id' => $cm->instance), '*', MUST_EXIST);

$downloadable = folder_archive_available($folder, $cm);
if (!$downloadable) {
    print_error('cannotdownloaddir', 'repository');
}

folder_downloaded($folder, $course, $cm, $context);

$fs = get_file_storage();
$file = $fs->get_file($context->id, 'mod_folder', 'content', 0, '/', '.');
if (!$file) {
    print_error('cannotdownloaddir', 'repository');
}

$zipper   = get_file_packer('application/zip');
$filename = shorten_filename(clean_filename($folder->name . "-" . date("Ymd")) . ".zip");
$temppath = make_request_directory() . $filename;

if ($zipper->archive_to_pathname(array('/' => $file), $temppath)) {
    send_temp_file($temppath, $filename);
} else {
    print_error('cannotdownloaddir', 'repository');
}

${this.title}

Code Editor : download_folder.php