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lib.php
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lib.php
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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/>.
/**
*
* @package qtype_lti
* @author Amr Hourani amr.hourani@id.ethz.ch
* @copyright ETHz 2016 amr.hourani@id.ethz.ch
*/
defined('MOODLE_INTERNAL') || die();
/**
* Returns available Basic LTI types
*
* @return array of basicLTI types
*/
function qtype_lti_get_lti_types() {
global $DB;
return $DB->get_records('qtype_lti_types', null, 'state DESC, timemodified DESC');
}
/**
* Returns available Basic LTI types that match the given
* tool proxy id
*
* @param int $toolproxyid
* Tool proxy id
* @return array of basicLTI types
*/
function qtype_lti_get_lti_types_from_proxy_id($toolproxyid) {
global $DB;
return $DB->get_records('qtype_lti_types', array('toolproxyid' => $toolproxyid), 'state DESC, timemodified DESC');
}
/**
* Defines custom file provider for downloading backup from remote site.
*
* @param stdClass $course
* the course object
* @param stdClass $cm
* the course module object
* @param stdClass $context
* the context
* @param string $filearea
* the name of the file area
* @param array $args
* extra arguments (itemid, path)
* @param bool $forcedownload
* whether or not force download
* @param array $options
* additional options affecting the file serving
* @return bool false if the file not found, just send the file otherwise and do not return anything
*/
function qtype_lti_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array()) {
// Check that the filearea is sane.
if ($filearea !== 'backup') {
return false;
}
// Require authentication.
require_login($course, true);
// Capability check.
if (!has_capability('moodle/backup:backupcourse', $context)) {
return false;
}
// Extract the filename / filepath from the $args array.
$itemid = array_shift($args);
$filename = array_pop($args);
if (!$args) {
$filepath = '/';
} else {
$filepath = '/' . implode('/', $args) . '/';
}
// Retrieve the file.
$fs = get_file_storage();
$file = $fs->get_file($context->id, 'qtype_lti', $filearea, $itemid, $filepath, $filename);
if (!$file) {
return false;
}
send_stored_file($file, 0, 0, $forcedownload, $options);
}