Juan Leyva
103 lines
3.9 KiB
PHP
103 lines
3.9 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Launch page, launch the app using custom URL schemes.
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*
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* If the user is not logged when visiting this page, he will be redirected to the login page.
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* Once he is logged, he will be redirected again to this page and the app launched via custom URL schemes.
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*
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* @package tool_mobile
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* @copyright 2016 Juan Leyva
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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require_once(__DIR__ . '/../../../config.php');
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require_once($CFG->libdir . '/externallib.php');
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$serviceshortname = required_param('service', PARAM_ALPHANUMEXT);
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$passport = required_param('passport', PARAM_RAW); // Passport send from the app to validate the response URL.
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$urlscheme = optional_param('urlscheme', 'moodlemobile', PARAM_NOTAGS); // The URL scheme the app supports.
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// Check web services enabled.
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if (!$CFG->enablewebservices) {
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throw new moodle_exception('enablewsdescription', 'webservice');
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}
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// Check if the plugin is properly configured.
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$typeoflogin = get_config('tool_mobile', 'typeoflogin');
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if ($typeoflogin != tool_mobile\api::LOGIN_VIA_BROWSER and
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$typeoflogin != tool_mobile\api::LOGIN_VIA_EMBEDDED_BROWSER) {
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throw new moodle_exception('pluginnotenabledorconfigured', 'tool_mobile');
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}
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// Check if the service exists and is enabled.
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$service = $DB->get_record('external_services', array('shortname' => $serviceshortname, 'enabled' => 1));
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if (empty($service)) {
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throw new moodle_exception('servicenotavailable', 'webservice');
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}
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require_login(0, false);
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// Require an active user: not guest, not suspended.
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core_user::require_active_user($USER);
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// Get an existing token or create a new one.
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$token = external_generate_token_for_current_user($service);
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// Log token access.
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$DB->set_field('external_tokens', 'lastaccess', time(), array('id' => $token->id));
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$params = array(
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'objectid' => $token->id,
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);
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$event = \core\event\webservice_token_sent::create($params);
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$event->add_record_snapshot('external_tokens', $token);
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$event->trigger();
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// Passport is generated in the mobile app, so the app opening can be validated using that variable.
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// Passports are valid only one time, it's deleted in the app once used.
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$siteid = md5($CFG->wwwroot . $passport);
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$apptoken = base64_encode($siteid . ':::' . $token->token);
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// Redirect using the custom URL scheme checking first if a URL scheme is forced in the site settings.
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$forcedurlscheme = get_config('tool_mobile', 'forcedurlscheme');
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if (!empty($forcedurlscheme)) {
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$urlscheme = $forcedurlscheme;
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}
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$location = "$urlscheme://token=$apptoken";
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// For iOS 10 onwards, we have to simulate a user click.
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if (core_useragent::is_ios()) {
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$PAGE->set_context(null);
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$PAGE->set_url('/local/mobile/launch.php', array('service' => $serviceshortname, 'passport' => $passport, 'urlscheme' => $urlscheme));
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echo $OUTPUT->header();
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$notice = get_string('clickheretolaunchtheapp', 'tool_mobile');
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echo html_writer::link($location, $notice, array('id' => 'launchapp'));
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echo html_writer::script(
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"window.onload = function() {
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document.getElementById('launchapp').click();
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};"
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);
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echo $OUTPUT->footer();
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} else {
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// For Android a http redirect will do fine.
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header('Location: ' . $location);
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die;
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}
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