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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/>.
/**
* A scheduled task.
*
* @package repository_onedrive
* @copyright 2017 Damyon Wiese
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace repository_onedrive;
use \core\task\scheduled_task;
use DateTime;
use DateInterval;
use repository_exception;
use \core\oauth2\rest_exception;
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/repository/lib.php');
/**
* Simple task to delete temporary permission records.
* @package repository_onedrive
* @copyright 2017 Damyon Wiese
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class remove_temp_access_task extends scheduled_task {
/**
* Get a descriptive name for this task (shown to admins).
*
* @return string
*/
public function get_name() {
return get_string('removetempaccesstask', 'repository_onedrive');
}
/**
* Do the job.
* Throw exceptions on errors (the job will be retried).
*/
public function execute() {
$accessrecords = access::get_records();
$expires = new DateTime();
$expires->sub(new DateInterval("P7D"));
$timestamp = $expires->getTimestamp();
$issuerid = get_config('onedrive', 'issuerid');
$issuer = \core\oauth2\api::get_issuer($issuerid);
// Add the current user as an OAuth writer.
$systemauth = \core\oauth2\api::get_system_oauth_client($issuer);
if ($systemauth === false) {
$details = 'Cannot connect as system user';
throw new repository_exception('errorwhilecommunicatingwith', 'repository', '', $details);
}
$systemservice = new \repository_onedrive\rest($systemauth);
foreach ($accessrecords as $access) {
if ($access->get('timemodified') < $timestamp) {
$params = ['permissionid' => $access->get('permissionid'), 'itemid' => $access->get('itemid')];
try {
$systemservice->call('delete_permission', $params);
} catch (rest_exception $re) {
// We log and give up here or we will always fail for eternity.
mtrace('Failed to remove access from file: ' . $access->get('itemid'));
}
$access->delete();
}
}
}
}