Your IP : 192.168.165.1
<?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/>.
/**
* Launch page, launch the app using custom URL schemes.
*
* If the user is not logged when visiting this page, he will be redirected to the login page.
* Once he is logged, he will be redirected again to this page and the app launched via custom URL schemes.
*
* @package tool_mobile
* @copyright 2016 Juan Leyva
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(__DIR__ . '/../../../config.php');
require_once($CFG->libdir . '/externallib.php');
$serviceshortname = required_param('service', PARAM_ALPHANUMEXT);
$passport = required_param('passport', PARAM_RAW); // Passport send from the app to validate the response URL.
$urlscheme = optional_param('urlscheme', 'moodlemobile', PARAM_NOTAGS); // The URL scheme the app supports.
$confirmed = optional_param('confirmed', false, PARAM_BOOL); // If we are being redirected after user confirmation.
$oauthsso = optional_param('oauthsso', 0, PARAM_INT); // Id of the OpenID issuer (for OAuth direct SSO).
// Validate that the urlscheme is valid.
if (!preg_match('/^[a-zA-Z][a-zA-Z0-9-\+\.]*$/', $urlscheme)) {
throw new moodle_exception('Invalid parameter: the value of urlscheme isn\'t valid. ' .
'It should start with a letter and can only contain letters, numbers and the characters "." "+" "-".');
}
// Check web services enabled.
if (!$CFG->enablewebservices) {
throw new moodle_exception('enablewsdescription', 'webservice');
}
// We have been requested to start a SSO process via OpenID.
if (!empty($oauthsso) && is_enabled_auth('oauth2')) {
$wantsurl = new moodle_url('/admin/tool/mobile/launch.php',
array('service' => $serviceshortname, 'passport' => $passport, 'urlscheme' => $urlscheme, 'confirmed' => $confirmed));
$oauthurl = new moodle_url('/auth/oauth2/login.php',
array('id' => $oauthsso, 'sesskey' => sesskey(), 'wantsurl' => $wantsurl));
header('Location: ' . $oauthurl->out(false));
die;
}
// Check if the plugin is properly configured.
$typeoflogin = get_config('tool_mobile', 'typeoflogin');
if (empty($SESSION->justloggedin) and
$typeoflogin != tool_mobile\api::LOGIN_VIA_BROWSER and
$typeoflogin != tool_mobile\api::LOGIN_VIA_EMBEDDED_BROWSER) {
throw new moodle_exception('pluginnotenabledorconfigured', 'tool_mobile');
}
// Check if the service exists and is enabled.
$service = $DB->get_record('external_services', array('shortname' => $serviceshortname, 'enabled' => 1));
if (empty($service)) {
throw new moodle_exception('servicenotavailable', 'webservice');
}
require_login(0, false);
// Require an active user: not guest, not suspended.
core_user::require_active_user($USER);
// Get an existing token or create a new one.
$timenow = time();
$token = external_generate_token_for_current_user($service);
$privatetoken = $token->privatetoken;
external_log_token_request($token);
// Don't return the private token if the user didn't just log in and a new token wasn't created.
if (empty($SESSION->justloggedin) and $token->timecreated < $timenow) {
$privatetoken = null;
}
$siteadmin = has_capability('moodle/site:config', context_system::instance(), $USER->id);
// Passport is generated in the mobile app, so the app opening can be validated using that variable.
// Passports are valid only one time, it's deleted in the app once used.
$siteid = md5($CFG->wwwroot . $passport);
$apptoken = $siteid . ':::' . $token->token;
if ($privatetoken and is_https() and !$siteadmin) {
$apptoken .= ':::' . $privatetoken;
}
$apptoken = base64_encode($apptoken);
// Redirect using the custom URL scheme checking first if a URL scheme is forced in the site settings.
$forcedurlscheme = get_config('tool_mobile', 'forcedurlscheme');
if (!empty($forcedurlscheme)) {
$urlscheme = $forcedurlscheme;
}
$location = "$urlscheme://token=$apptoken";
// For iOS 10 onwards, we have to simulate a user click.
// If we come from the confirmation page, we should display a nicer page.
$isios = core_useragent::is_ios();
if ($confirmed or $isios) {
$PAGE->set_context(context_system::instance());
$PAGE->set_heading($COURSE->fullname);
$params = array('service' => $serviceshortname, 'passport' => $passport, 'urlscheme' => $urlscheme, 'confirmed' => $confirmed);
$PAGE->set_url("/$CFG->admin/tool/mobile/launch.php", $params);
echo $OUTPUT->header();
if ($confirmed) {
$confirmedstr = get_string('confirmed');
$PAGE->navbar->add($confirmedstr);
$PAGE->set_title($confirmedstr);
echo $OUTPUT->notification($confirmedstr, \core\output\notification::NOTIFY_SUCCESS);
echo $OUTPUT->box_start('generalbox centerpara boxwidthnormal boxaligncenter');
echo $OUTPUT->single_button(new moodle_url('/course/'), get_string('courses'));
echo $OUTPUT->box_end();
}
$notice = get_string('clickheretolaunchtheapp', 'tool_mobile');
echo html_writer::link($location, $notice, array('id' => 'launchapp'));
echo html_writer::script(
"window.onload = function() {
document.getElementById('launchapp').click();
};"
);
echo $OUTPUT->footer();
} else {
// For Android a http redirect will do fine.
header('Location: ' . $location);
die;
}