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/>.

/**

 * The main entry point for the external system.

 *

 * @package    enrol_lti

 * @copyright  2016 Mark Nelson <markn@moodle.com>

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

 */

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

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

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

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

$PAGE->set_url($url);

$PAGE->set_pagelayout('popup');

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

// Get the tool.

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

// Check if the authentication plugin is disabled.

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();

}

// Check if the enrolment instance has been upgraded to a newer LTI version.

if ($tool->ltiversion != 'LTI-1p0/LTI-2p0') {

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

    exit();

}

$consumerkey = required_param('oauth_consumer_key', PARAM_TEXT);

$ltiversion = optional_param('lti_version', null, PARAM_TEXT);

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

// Only accept launch requests from this endpoint.

if ($messagetype != "basic-lti-launch-request") {

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

    exit();

}

// Initialise tool provider.

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

// Special handling for LTIv1 launch requests.

if ($ltiversion === \IMSGlobal\LTI\ToolProvider\ToolProvider::LTI_VERSION1) {

    $dataconnector = new \enrol_lti\data_connector();

    $consumer = new \IMSGlobal\LTI\ToolProvider\ToolConsumer($consumerkey, $dataconnector);

    // Check if the consumer has already been registered to the enrol_lti_lti2_consumer table. Register if necessary.

    $consumer->ltiVersion = \IMSGlobal\LTI\ToolProvider\ToolProvider::LTI_VERSION1;

    // For LTIv1, set the tool secret as the consumer secret.

    $consumer->secret = $tool->secret;

    $consumer->name = optional_param('tool_consumer_instance_name', '', PARAM_TEXT);

    $consumer->consumerName = $consumer->name;

    $consumer->consumerGuid = optional_param('tool_consumer_instance_guid', null, PARAM_TEXT);

    $consumer->consumerVersion = optional_param('tool_consumer_info_version', null, PARAM_TEXT);

    $consumer->enabled = true;

    $consumer->protected = true;

    $consumer->save();

    // Set consumer to tool provider.

    $toolprovider->consumer = $consumer;

    // Map tool consumer and published tool, if necessary.

    $toolprovider->map_tool_to_consumer();

}

// Handle the request.

$toolprovider->handleRequest();

echo $OUTPUT->header();

echo $OUTPUT->footer();