Proyectos de Subversion Moodle

<?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/>.

/**

 * Tool proxy.

 *

 * @package    enrol_lti

 * @copyright  2016 John Okely <john@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

require_once(__DIR__ . '/../../config.php');

$toolid = null;

$token = null;

$filearguments = get_file_argument();

$arguments = explode('/', trim($filearguments, '/'));

if (count($arguments) == 2) {

    list($toolid, $token) = $arguments;

}

$toolid = optional_param('id', $toolid, PARAM_INT);

$token = optional_param('token', $token, PARAM_ALPHANUM);

$PAGE->set_context(context_system::instance());

$url = new moodle_url('/enrol/lti/tp.php');

$PAGE->set_url($url);

$PAGE->set_pagelayout('popup');

$PAGE->set_title(get_string('registration', 'enrol_lti'));

// Only show the proxy if the token parameter is correct.

// If we do not compare with a shared secret, someone could very easily

// guess an id for the enrolment.

if (!\enrol_lti\helper::verify_proxy_token($toolid, $token)) {

    throw new \moodle_exception('incorrecttoken', 'enrol_lti');

}

$tool = \enrol_lti\helper::get_lti_tool($toolid);

if (!is_enabled_auth('lti')) {

    throw new \moodle_exception('pluginnotenabled', 'auth', '', get_string('pluginname', 'auth_lti'));

    exit();

}

// Check if the enrolment plugin is disabled.

if (!enrol_is_enabled('lti')) {

    throw new \moodle_exception('enrolisdisabled', 'enrol_lti');

    exit();

}

// Check if the enrolment instance is disabled.

if ($tool->status != ENROL_INSTANCE_ENABLED) {

    throw new \moodle_exception('enrolisdisabled', 'enrol_lti');

    exit();

}

$messagetype = required_param('lti_message_type', PARAM_TEXT);

// Only accept proxy registration requests from this endpoint.

if ($messagetype != "ToolProxyRegistrationRequest") {

    throw new \moodle_exception('invalidrequest', 'enrol_lti');

    exit();

}

$toolprovider = new \enrol_lti\tool_provider($toolid);

$toolprovider->handleRequest();

echo $OUTPUT->header();

echo $OUTPUT->footer();