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<?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/>.
/**
* This file contains the moodle hooks for the comments feedback plugin
*
* @package assignfeedback_comments
* @copyright 2018 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Serves assignment comment feedback files.
*
* @param mixed $course course or id of the course
* @param mixed $cm course module or id of the course module
* @param context $context
* @param string $filearea
* @param array $args
* @param bool $forcedownload
* @param array $options - List of options affecting file serving.
* @return bool false if file not found, does not return if found - just send the file
*/
function assignfeedback_comments_pluginfile(
$course,
$cm,
context $context,
$filearea,
$args,
$forcedownload,
array $options = []) {
global $CFG, $DB;
require_once($CFG->dirroot . '/mod/assign/locallib.php');
if ($context->contextlevel != CONTEXT_MODULE) {
return false;
}
require_login($course, false, $cm);
$itemid = (int)array_shift($args);
$record = $DB->get_record('assign_grades', array('id' => $itemid), 'userid,assignment', MUST_EXIST);
$userid = $record->userid;
$assign = new assign($context, $cm, $course);
$instance = $assign->get_instance();
if ($instance->id != $record->assignment) {
return false;
}
if (!$assign->can_view_submission($userid)) {
return false;
}
$relativepath = implode('/', $args);
$fullpath = "/{$context->id}/assignfeedback_comments/$filearea/$itemid/$relativepath";
$fs = get_file_storage();
if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
return false;
}
// Download MUST be forced - security!
send_stored_file($file, 0, 0, true, $options);
}