/*
* wordpress-lti - WordPress module to add LTI support
* Copyright (C) 2013 Simon Booth, Stephen P Vickers
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Contact: s.p.booth@stir.ac.uk
*
* Version history:
* 1.0.00 18-Apr-13 Initial release
*/
/** Load WordPress Administration Bootstrap */
require_once dirname(dirname(dirname(dirname(dirname(__FILE__))))) . DIRECTORY_SEPARATOR . 'wp-admin' . DIRECTORY_SEPARATOR . 'admin.php';
// include the library
require_once 'lib.php';
header('Content-type: application/json');
echo '{"Key": "' . lti_get_guid() . '","Secret": "' . LTI_Data_Connector::getRandomString(32) . '"}';
/**
* Save the resource link share key to the database.
*
* @return boolean True if the share key was successfully saved
*/
public function save()
{
if (empty($this->life)) {
$this->life = self::DEFAULT_SHARE_KEY_LIFE;
} else {
$this->life = max(min($this->life, self::MAX_SHARE_KEY_LIFE), 0);
}
$this->expires = time() + $this->life * 60 * 60;
if (empty($this->id)) {
if (empty($this->length) || !is_numeric($this->length)) {
$this->length = self::MAX_SHARE_KEY_LENGTH;
} else {
$this->length = max(min($this->length, self::MAX_SHARE_KEY_LENGTH), self::MIN_SHARE_KEY_LENGTH);
}
$this->id = LTI_Data_Connector::getRandomString($this->length);
}
return $this->data_connector->Resource_Link_Share_Key_save($this);
}
function lti_get_guid()
{
$lti_scope = 3;
if (isset($_GET['lti_scope'])) {
$lti_scope = $_GET['lti_scope'];
}
$str = strtoupper(LTI_Data_Connector::getRandomString(6));
return 'WP' . $lti_scope . '-' . $str;
}
