mirror of
https://github.com/moodle/moodle.git
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95 lines
3.6 KiB
PHP
95 lines
3.6 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Download course content confirmation and execution.
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*
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* @package core
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* @subpackage course
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* @copyright 2020 Michael Hawkins <michaelh@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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require_once('../config.php');
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use core\content;
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use core\content\export\zipwriter;
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$contextid = required_param('contextid', PARAM_INT);
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$isdownload = optional_param('download', 0, PARAM_BOOL);
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$coursecontext = context::instance_by_id($contextid);
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$courseid = $coursecontext->instanceid;
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$courselink = new moodle_url('/course/view.php', ['id' => $courseid]);
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if (!\core\content::can_export_context($coursecontext, $USER)) {
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redirect($courselink);
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}
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$PAGE->set_url('/course/downloadcontent.php', ['contextid' => $contextid]);
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require_login($courseid);
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$courseinfo = get_fast_modinfo($courseid)->get_course();
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$filename = str_replace('/', '', str_replace(' ', '_', $courseinfo->shortname)) . '_' . time() . '.zip';
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// If download confirmed, prepare and start the zipstream of the course download content.
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if ($isdownload) {
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require_sesskey();
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$exportoptions = null;
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if (!empty($CFG->maxsizeperdownloadcoursefile)) {
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$exportoptions = new stdClass();
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$exportoptions->maxfilesize = $CFG->maxsizeperdownloadcoursefile;
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}
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// Use file writer in debug developer mode, so any errors can be displayed instead of being streamed into the output file.
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if (debugging('', DEBUG_DEVELOPER)) {
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$writer = zipwriter::get_file_writer($filename, $exportoptions);
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ob_start();
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content::export_context($coursecontext, $USER, $writer);
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$content = ob_get_clean();
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// If no errors found, output the file.
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if (empty($content)) {
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send_file($writer->get_file_path(), $filename);
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redirect($courselink);
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} else {
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// If any errors occurred, display them instead of outputting the file.
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debugging("Errors found while producing the download course content output:\n {$content}", DEBUG_DEVELOPER);
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}
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} else {
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// If not developer debugging, stream the output file directly.
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$writer = zipwriter::get_stream_writer($filename, $exportoptions);
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content::export_context($coursecontext, $USER, $writer);
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redirect($courselink);
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}
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} else {
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$PAGE->set_title(get_string('downloadcoursecontent', 'course'));
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$PAGE->set_heading(format_string($courseinfo->fullname));
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echo $OUTPUT->header();
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echo $OUTPUT->heading(get_string('downloadcoursecontent', 'course'));
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// Prepare download confirmation information and display it.
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$maxfilesize = display_size($CFG->maxsizeperdownloadcoursefile, 0);
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$downloadlink = new moodle_url('/course/downloadcontent.php', ['contextid' => $contextid, 'download' => 1]);
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echo $OUTPUT->confirm(get_string('downloadcourseconfirmation', 'course', $maxfilesize), $downloadlink, $courselink);
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}
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