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/>.
/**
* Class for Moodle Mobile tools.
*
* @package tool_mobile
* @copyright 2016 Juan Leyva
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 3.1
*/
namespace tool_mobile;
use core_component;
use core_plugin_manager;
use context_system;
use moodle_url;
use moodle_exception;
use lang_string;
use curl;
use core_qrcode;
use stdClass;
/**
* API exposed by tool_mobile, to be used mostly by external functions and the plugin settings.
*
* @copyright 2016 Juan Leyva
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 3.1
*/
class api {
/** @var int to identify the login via app. */
const LOGIN_VIA_APP = 1;
/** @var int to identify the login via browser. */
const LOGIN_VIA_BROWSER = 2;
/** @var int to identify the login via an embedded browser. */
const LOGIN_VIA_EMBEDDED_BROWSER = 3;
/** @var int seconds an auto-login key will expire. */
const LOGIN_KEY_TTL = 60;
/** @var string URL of the Moodle Apps Portal */
const MOODLE_APPS_PORTAL_URL = 'https://apps.moodle.com';
/** @var int seconds a QR login key will expire. */
const LOGIN_QR_KEY_TTL = 600;
/** @var int QR code disabled value */
const QR_CODE_DISABLED = 0;
/** @var int QR code type URL value */
const QR_CODE_URL = 1;
/** @var int QR code type login value */
const QR_CODE_LOGIN = 2;
/** @var string Default Android app id */
const DEFAULT_ANDROID_APP_ID = 'com.moodle.moodlemobile';
/** @var string Default iOS app id */
const DEFAULT_IOS_APP_ID = '633359593';
/**
* Returns a list of Moodle plugins supporting the mobile app.
*
* @return array an array of objects containing the plugin information
*/
public static function get_plugins_supporting_mobile() {
global $CFG;
require_once($CFG->libdir . '/adminlib.php');
$cachekey = 'mobileplugins';
if (!isloggedin()) {
$cachekey = 'authmobileplugins'; // Use a different cache for not logged users.
}
// Check if we can return this from cache.
$cache = \cache::make('tool_mobile', 'plugininfo');
$pluginsinfo = $cache->get($cachekey);
if ($pluginsinfo !== false) {
return (array)$pluginsinfo;
}
$pluginsinfo = [];
// For not logged users return only auth plugins.
// This is to avoid anyone (not being a registered user) to obtain and download all the site remote add-ons.
if (!isloggedin()) {
$plugintypes = array('auth' => $CFG->dirroot.'/auth');
} else {
$plugintypes = core_component::get_plugin_types();
}
foreach ($plugintypes as $plugintype => $unused) {
// We need to include files here.
$pluginswithfile = core_component::get_plugin_list_with_file($plugintype, 'db' . DIRECTORY_SEPARATOR . 'mobile.php');
foreach ($pluginswithfile as $plugin => $notused) {
$path = core_component::get_plugin_directory($plugintype, $plugin);
$component = $plugintype . '_' . $plugin;
$version = get_component_version($component);
require("$path/db/mobile.php");
foreach ($addons as $addonname => $addoninfo) {
// Add handlers (for site add-ons).
$handlers = !empty($addoninfo['handlers']) ? $addoninfo['handlers'] : array();
$handlers = json_encode($handlers); // JSON formatted, since it is a complex structure that may vary over time.
// Now language strings used by the app.
$lang = array();
if (!empty($addoninfo['lang'])) {
$stringmanager = get_string_manager();
$langs = $stringmanager->get_list_of_translations(true);
foreach ($langs as $langid => $langname) {
foreach ($addoninfo['lang'] as $stringinfo) {
$lang[$langid][$stringinfo[0]] =
$stringmanager->get_string($stringinfo[0], $stringinfo[1], null, $langid);
}
}
}
$lang = json_encode($lang);
$plugininfo = array(
'component' => $component,
'version' => $version,
'addon' => $addonname,
'dependencies' => !empty($addoninfo['dependencies']) ? $addoninfo['dependencies'] : array(),
'fileurl' => '',
'filehash' => '',
'filesize' => 0,
'handlers' => $handlers,
'lang' => $lang,
);
// All the mobile packages must be under the plugin mobile directory.
$package = $path . '/mobile/' . $addonname . '.zip';
if (file_exists($package)) {
$plugininfo['fileurl'] = $CFG->wwwroot . '' . str_replace($CFG->dirroot, '', $package);
$plugininfo['filehash'] = sha1_file($package);
$plugininfo['filesize'] = filesize($package);
}
$pluginsinfo[] = $plugininfo;
}
}
}
$cache->set($cachekey, $pluginsinfo);
return $pluginsinfo;
}
/**
* Returns a list of the site public settings, those not requiring authentication.
*
* @return array with the settings and warnings
*/
public static function get_public_config() {
global $CFG, $SITE, $PAGE, $OUTPUT;
require_once($CFG->libdir . '/authlib.php');
$context = context_system::instance();
// We need this to make work the format text functions.
$PAGE->set_context($context);
list($authinstructions, $notusedformat) = external_format_text($CFG->auth_instructions, FORMAT_MOODLE, $context->id);
list($maintenancemessage, $notusedformat) = external_format_text($CFG->maintenance_message, FORMAT_MOODLE, $context->id);
$settings = array(
'wwwroot' => $CFG->wwwroot,
'httpswwwroot' => $CFG->wwwroot,
'sitename' => external_format_string($SITE->fullname, $context->id, true),
'guestlogin' => $CFG->guestloginbutton,
'rememberusername' => $CFG->rememberusername,
'authloginviaemail' => $CFG->authloginviaemail,
'registerauth' => $CFG->registerauth,
'forgottenpasswordurl' => clean_param($CFG->forgottenpasswordurl, PARAM_URL), // We may expect a mailto: here.
'authinstructions' => $authinstructions,
'authnoneenabled' => (int) is_enabled_auth('none'),
'enablewebservices' => $CFG->enablewebservices,
'enablemobilewebservice' => $CFG->enablemobilewebservice,
'maintenanceenabled' => $CFG->maintenance_enabled,
'maintenancemessage' => $maintenancemessage,
'mobilecssurl' => !empty($CFG->mobilecssurl) ? $CFG->mobilecssurl : '',
'tool_mobile_disabledfeatures' => get_config('tool_mobile', 'disabledfeatures'),
'country' => clean_param($CFG->country, PARAM_NOTAGS),
'agedigitalconsentverification' => \core_auth\digital_consent::is_age_digital_consent_verification_enabled(),
'autolang' => $CFG->autolang,
'lang' => clean_param($CFG->lang, PARAM_LANG), // Avoid breaking WS because of incorrect package langs.
'langmenu' => $CFG->langmenu,
'langlist' => $CFG->langlist,
'locale' => $CFG->locale,
'tool_mobile_minimumversion' => get_config('tool_mobile', 'minimumversion'),
'tool_mobile_iosappid' => get_config('tool_mobile', 'iosappid'),
'tool_mobile_androidappid' => get_config('tool_mobile', 'androidappid'),
'tool_mobile_setuplink' => clean_param(get_config('tool_mobile', 'setuplink'), PARAM_URL),
);
$typeoflogin = get_config('tool_mobile', 'typeoflogin');
// Not found, edge case.
if ($typeoflogin === false) {
$typeoflogin = self::LOGIN_VIA_APP; // Defaults to via app.
}
$settings['typeoflogin'] = $typeoflogin;
// Check if the user can sign-up to return the launch URL in that case.
$cansignup = signup_is_enabled();
$url = new moodle_url("/$CFG->admin/tool/mobile/launch.php");
$settings['launchurl'] = $url->out(false);
// Check that we are receiving a moodle_url object, themes can override get_logo_url and may return incorrect values.
if (($logourl = $OUTPUT->get_logo_url()) && $logourl instanceof moodle_url) {
$settings['logourl'] = clean_param($logourl->out(false), PARAM_URL);
}
if (($compactlogourl = $OUTPUT->get_compact_logo_url()) && $compactlogourl instanceof moodle_url) {
$settings['compactlogourl'] = clean_param($compactlogourl->out(false), PARAM_URL);
}
// Identity providers.
$authsequence = get_enabled_auth_plugins(true);
$identityproviders = \auth_plugin_base::get_identity_providers($authsequence);
$identityprovidersdata = \auth_plugin_base::prepare_identity_providers_for_output($identityproviders, $OUTPUT);
if (!empty($identityprovidersdata)) {
$settings['identityproviders'] = $identityprovidersdata;
// Clean URLs to avoid breaking Web Services.
// We can't do it in prepare_identity_providers_for_output() because it may break the web output.
foreach ($settings['identityproviders'] as &$ip) {
$ip['url'] = (!empty($ip['url'])) ? clean_param($ip['url'], PARAM_URL) : '';
$ip['iconurl'] = (!empty($ip['iconurl'])) ? clean_param($ip['iconurl'], PARAM_URL) : '';
}
}
// If age is verified, return also the admin contact details.
if ($settings['agedigitalconsentverification']) {
$settings['supportname'] = clean_param($CFG->supportname, PARAM_NOTAGS);
$settings['supportemail'] = clean_param($CFG->supportemail, PARAM_EMAIL);
}
return $settings;
}
/**
* Returns a list of site configurations, filtering by section.
*
* @param string $section section name
* @return stdClass object containing the settings
*/
public static function get_config($section) {
global $CFG, $SITE;
$settings = new \stdClass;
$context = context_system::instance();
$isadmin = has_capability('moodle/site:config', $context);
if (empty($section) or $section == 'frontpagesettings') {
require_once($CFG->dirroot . '/course/format/lib.php');
// First settings that anyone can deduce.
$settings->fullname = external_format_string($SITE->fullname, $context->id);
$settings->shortname = external_format_string($SITE->shortname, $context->id);
// Return to a var instead of directly to $settings object because of differences between
// list() in php5 and php7. {@link http://php.net/manual/en/function.list.php}
$formattedsummary = external_format_text($SITE->summary, $SITE->summaryformat,
$context->id);
$settings->summary = $formattedsummary[0];
$settings->summaryformat = $formattedsummary[1];
$settings->frontpage = $CFG->frontpage;
$settings->frontpageloggedin = $CFG->frontpageloggedin;
$settings->maxcategorydepth = $CFG->maxcategorydepth;
$settings->frontpagecourselimit = $CFG->frontpagecourselimit;
$settings->numsections = course_get_format($SITE)->get_last_section_number();
$settings->newsitems = $SITE->newsitems;
$settings->commentsperpage = $CFG->commentsperpage;
// Now, admin settings.
if ($isadmin) {
$settings->defaultfrontpageroleid = $CFG->defaultfrontpageroleid;
}
}
if (empty($section) or $section == 'sitepolicies') {
$manager = new \core_privacy\local\sitepolicy\manager();
$settings->sitepolicy = ($sitepolicy = $manager->get_embed_url()) ? $sitepolicy->out(false) : '';
$settings->sitepolicyhandler = $CFG->sitepolicyhandler;
$settings->disableuserimages = $CFG->disableuserimages;
}
if (empty($section) or $section == 'gradessettings') {
require_once($CFG->dirroot . '/user/lib.php');
$settings->mygradesurl = user_mygrades_url();
// The previous function may return moodle_url instances or plain string URLs.
if ($settings->mygradesurl instanceof moodle_url) {
$settings->mygradesurl = $settings->mygradesurl->out(false);
}
}
if (empty($section) or $section == 'mobileapp') {
$settings->tool_mobile_forcelogout = get_config('tool_mobile', 'forcelogout');
$settings->tool_mobile_customlangstrings = get_config('tool_mobile', 'customlangstrings');
$settings->tool_mobile_disabledfeatures = get_config('tool_mobile', 'disabledfeatures');
$settings->tool_mobile_custommenuitems = get_config('tool_mobile', 'custommenuitems');
$settings->tool_mobile_apppolicy = get_config('tool_mobile', 'apppolicy');
}
if (empty($section) or $section == 'calendar') {
$settings->calendartype = $CFG->calendartype;
$settings->calendar_site_timeformat = $CFG->calendar_site_timeformat;
$settings->calendar_startwday = $CFG->calendar_startwday;
$settings->calendar_adminseesall = $CFG->calendar_adminseesall;
$settings->calendar_lookahead = $CFG->calendar_lookahead;
$settings->calendar_maxevents = $CFG->calendar_maxevents;
}
if (empty($section) or $section == 'coursecolors') {
$colornumbers = range(1, 10);
foreach ($colornumbers as $number) {
$settings->{'core_admin_coursecolor' . $number} = get_config('core_admin', 'coursecolor' . $number);
}
}
return $settings;
}
/*
* Check if all the required conditions are met to allow the auto-login process continue.
*
* @param int $userid current user id
* @since Moodle 3.2
* @throws moodle_exception
*/
public static function check_autologin_prerequisites($userid) {
global $CFG;
if (!$CFG->enablewebservices or !$CFG->enablemobilewebservice) {
throw new moodle_exception('enablewsdescription', 'webservice');
}
if (!is_https()) {
throw new moodle_exception('httpsrequired', 'tool_mobile');
}
if (has_capability('moodle/site:config', context_system::instance(), $userid) or is_siteadmin($userid)) {
throw new moodle_exception('autologinnotallowedtoadmins', 'tool_mobile');
}
}
/**
* Creates an auto-login key for the current user, this key is restricted by time and ip address.
* This key is used for automatically login the user in the site when the Moodle app opens the site in a mobile browser.
*
* @return string the key
* @since Moodle 3.2
*/
public static function get_autologin_key() {
global $USER;
// Delete previous keys.
delete_user_key('tool_mobile', $USER->id);
// Create a new key.
$iprestriction = getremoteaddr();
$validuntil = time() + self::LOGIN_KEY_TTL;
return create_user_key('tool_mobile', $USER->id, null, $iprestriction, $validuntil);
}
/**
* Creates a QR login key for the current user, this key is restricted by time and ip address.
* This key is used for automatically login the user in the site when the user scans a QR code in the Moodle app.
*
* @return string the key
* @since Moodle 3.9
*/
public static function get_qrlogin_key() {
global $USER;
// Delete previous keys.
delete_user_key('tool_mobile', $USER->id);
// Create a new key.
$iprestriction = getremoteaddr(null);
$validuntil = time() + self::LOGIN_QR_KEY_TTL;
return create_user_key('tool_mobile', $USER->id, null, $iprestriction, $validuntil);
}
/**
* Get a list of the Mobile app features.
*
* @return array array with the features grouped by theirs ubication in the app.
* @since Moodle 3.3
*/
public static function get_features_list() {
global $CFG;
require_once($CFG->libdir . '/authlib.php');
$general = new lang_string('general');
$mainmenu = new lang_string('mainmenu', 'tool_mobile');
$course = new lang_string('course');
$modules = new lang_string('managemodules');
$blocks = new lang_string('blocks');
$user = new lang_string('user');
$files = new lang_string('files');
$remoteaddons = new lang_string('remoteaddons', 'tool_mobile');
$identityproviders = new lang_string('oauth2identityproviders', 'tool_mobile');
$availablemods = core_plugin_manager::instance()->get_plugins_of_type('mod');
$coursemodules = array();
$appsupportedmodules = array(
'assign', 'book', 'chat', 'choice', 'data', 'feedback', 'folder', 'forum', 'glossary', 'h5pactivity', 'imscp',
'label', 'lesson', 'lti', 'page', 'quiz', 'resource', 'scorm', 'survey', 'url', 'wiki', 'workshop');
foreach ($availablemods as $mod) {
if (in_array($mod->name, $appsupportedmodules)) {
$coursemodules['$mmCourseDelegate_mmaMod' . ucfirst($mod->name)] = $mod->displayname;
}
}
asort($coursemodules);
$remoteaddonslist = array();
$mobileplugins = self::get_plugins_supporting_mobile();
foreach ($mobileplugins as $plugin) {
$displayname = core_plugin_manager::instance()->plugin_name($plugin['component']) . " - " . $plugin['addon'];
$remoteaddonslist['sitePlugin_' . $plugin['component'] . '_' . $plugin['addon']] = $displayname;
}
// Display blocks.
$availableblocks = core_plugin_manager::instance()->get_plugins_of_type('block');
$courseblocks = array();
$appsupportedblocks = array(
'activity_modules' => 'CoreBlockDelegate_AddonBlockActivityModules',
'activity_results' => 'CoreBlockDelegate_AddonBlockActivityResults',
'site_main_menu' => 'CoreBlockDelegate_AddonBlockSiteMainMenu',
'myoverview' => 'CoreBlockDelegate_AddonBlockMyOverview',
'timeline' => 'CoreBlockDelegate_AddonBlockTimeline',
'recentlyaccessedcourses' => 'CoreBlockDelegate_AddonBlockRecentlyAccessedCourses',
'starredcourses' => 'CoreBlockDelegate_AddonBlockStarredCourses',
'recentlyaccesseditems' => 'CoreBlockDelegate_AddonBlockRecentlyAccessedItems',
'badges' => 'CoreBlockDelegate_AddonBlockBadges',
'blog_menu' => 'CoreBlockDelegate_AddonBlockBlogMenu',
'blog_recent' => 'CoreBlockDelegate_AddonBlockBlogRecent',
'blog_tags' => 'CoreBlockDelegate_AddonBlockBlogTags',
'calendar_month' => 'CoreBlockDelegate_AddonBlockCalendarMonth',
'calendar_upcoming' => 'CoreBlockDelegate_AddonBlockCalendarUpcoming',
'comments' => 'CoreBlockDelegate_AddonBlockComments',
'completionstatus' => 'CoreBlockDelegate_AddonBlockCompletionStatus',
'feedback' => 'CoreBlockDelegate_AddonBlockFeedback',
'glossary_random' => 'CoreBlockDelegate_AddonBlockGlossaryRandom',
'html' => 'CoreBlockDelegate_AddonBlockHtml',
'lp' => 'CoreBlockDelegate_AddonBlockLp',
'news_items' => 'CoreBlockDelegate_AddonBlockNewsItems',
'online_users' => 'CoreBlockDelegate_AddonBlockOnlineUsers',
'selfcompletion' => 'CoreBlockDelegate_AddonBlockSelfCompletion',
'tags' => 'CoreBlockDelegate_AddonBlockTags',
);
foreach ($availableblocks as $block) {
if (isset($appsupportedblocks[$block->name])) {
$courseblocks[$appsupportedblocks[$block->name]] = $block->displayname;
}
}
asort($courseblocks);
$features = array(
"$general" => array(
'NoDelegate_CoreOffline' => new lang_string('offlineuse', 'tool_mobile'),
'NoDelegate_SiteBlocks' => new lang_string('blocks'),
'NoDelegate_CoreComments' => new lang_string('comments'),
'NoDelegate_CoreRating' => new lang_string('ratings', 'rating'),
'NoDelegate_CoreTag' => new lang_string('tags'),
'$mmLoginEmailSignup' => new lang_string('startsignup'),
'NoDelegate_ForgottenPassword' => new lang_string('forgotten'),
'NoDelegate_ResponsiveMainMenuItems' => new lang_string('responsivemainmenuitems', 'tool_mobile'),
'NoDelegate_H5POffline' => new lang_string('h5poffline', 'tool_mobile'),
'NoDelegate_DarkMode' => new lang_string('darkmode', 'tool_mobile'),
'CoreFilterDelegate' => new lang_string('type_filter_plural', 'plugin'),
),
"$mainmenu" => array(
'$mmSideMenuDelegate_mmaFrontpage' => new lang_string('sitehome'),
'$mmSideMenuDelegate_mmCourses' => new lang_string('mycourses'),
'CoreMainMenuDelegate_CoreCoursesDashboard' => new lang_string('myhome'),
'$mmSideMenuDelegate_mmaCalendar' => new lang_string('calendar', 'calendar'),
'$mmSideMenuDelegate_mmaNotifications' => new lang_string('notifications', 'message'),
'$mmSideMenuDelegate_mmaMessages' => new lang_string('messages', 'message'),
'$mmSideMenuDelegate_mmaGrades' => new lang_string('grades', 'grades'),
'$mmSideMenuDelegate_mmaCompetency' => new lang_string('myplans', 'tool_lp'),
'CoreMainMenuDelegate_AddonBlog' => new lang_string('blog', 'blog'),
'$mmSideMenuDelegate_mmaFiles' => new lang_string('files'),
'$mmSideMenuDelegate_website' => new lang_string('webpage'),
'$mmSideMenuDelegate_help' => new lang_string('help'),
'CoreMainMenuDelegate_QrReader' => new lang_string('scanqrcode', 'tool_mobile'),
),
"$course" => array(
'NoDelegate_CourseBlocks' => new lang_string('blocks'),
'CoreCourseOptionsDelegate_AddonBlog' => new lang_string('blog', 'blog'),
'$mmCoursesDelegate_search' => new lang_string('search'),
'$mmCoursesDelegate_mmaCompetency' => new lang_string('competencies', 'competency'),
'$mmCoursesDelegate_mmaParticipants' => new lang_string('participants'),
'$mmCoursesDelegate_mmaGrades' => new lang_string('grades', 'grades'),
'$mmCoursesDelegate_mmaCourseCompletion' => new lang_string('coursecompletion', 'completion'),
'$mmCoursesDelegate_mmaNotes' => new lang_string('notes', 'notes'),
'NoDelegate_CoreCourseDownload' => new lang_string('downloadcourse', 'tool_mobile'),
'NoDelegate_CoreCoursesDownload' => new lang_string('downloadcourses', 'tool_mobile'),
),
"$user" => array(
'CoreUserDelegate_AddonBlog:blogs' => new lang_string('blog', 'blog'),
'$mmUserDelegate_mmaBadges' => new lang_string('badges', 'badges'),
'$mmUserDelegate_mmaCompetency:learningPlan' => new lang_string('competencies', 'competency'),
'$mmUserDelegate_mmaCourseCompletion:viewCompletion' => new lang_string('coursecompletion', 'completion'),
'$mmUserDelegate_mmaGrades:viewGrades' => new lang_string('grades', 'grades'),
'$mmUserDelegate_mmaMessages:sendMessage' => new lang_string('sendmessage', 'message'),
'$mmUserDelegate_mmaMessages:addContact' => new lang_string('addcontact', 'message'),
'$mmUserDelegate_mmaMessages:blockContact' => new lang_string('blockcontact', 'message'),
'$mmUserDelegate_mmaNotes:addNote' => new lang_string('addnewnote', 'notes'),
'$mmUserDelegate_picture' => new lang_string('userpic'),
),
"$files" => array(
'files_privatefiles' => new lang_string('privatefiles'),
'files_sitefiles' => new lang_string('sitefiles'),
'files_upload' => new lang_string('upload'),
),
"$modules" => $coursemodules,
"$blocks" => $courseblocks,
);
if (!empty($remoteaddonslist)) {
$features["$remoteaddons"] = $remoteaddonslist;
}
if (!empty($availablemods['lti'])) {
$ltidisplayname = $availablemods['lti']->displayname;
$features["$ltidisplayname"]['CoreCourseModuleDelegate_AddonModLti:openInAppBrowser'] =
new lang_string('openusingembeddedbrowser', 'tool_mobile');
}
// Display OAuth 2 identity providers.
if (is_enabled_auth('oauth2')) {
$identityproviderslist = array();
$idps = \auth_plugin_base::get_identity_providers(['oauth2']);
foreach ($idps as $idp) {
// Only add identity providers that have an ID.
$id = isset($idp['url']) ? $idp['url']->get_param('id') : null;
if ($id != null) {
$identityproviderslist['NoDelegate_IdentityProvider_' . $id] = $idp['name'];
}
}
if (!empty($identityproviderslist)) {
$features["$identityproviders"] = array();
if (count($identityproviderslist) > 1) {
// Include an option to disable them all.
$features["$identityproviders"]['NoDelegate_IdentityProviders'] = new lang_string('all');
}
$features["$identityproviders"] = array_merge($features["$identityproviders"], $identityproviderslist);
}
}
return $features;
}
/**
* This function check the current site for potential configuration issues that may prevent the mobile app to work.
*
* @return array list of potential issues
* @since Moodle 3.4
*/
public static function get_potential_config_issues() {
global $CFG;
require_once($CFG->dirroot . "/lib/filelib.php");
require_once($CFG->dirroot . '/message/lib.php');
$warnings = array();
$curl = new curl();
// Return certificate information and verify the certificate.
$curl->setopt(array('CURLOPT_CERTINFO' => 1, 'CURLOPT_SSL_VERIFYPEER' => true));
$httpswwwroot = str_replace('http:', 'https:', $CFG->wwwroot); // Force https url.
// Check https using a page not redirecting or returning exceptions.
$curl->head($httpswwwroot . "/$CFG->admin/tool/mobile/mobile.webmanifest.php");
$info = $curl->get_info();
// First of all, check the server certificate (if any).
if (empty($info['http_code']) or ($info['http_code'] >= 400)) {
$warnings[] = ['nohttpsformobilewarning', 'admin'];
} else {
// Check the certificate is not self-signed or has an untrusted-root.
// This may be weak in some scenarios (when the curl SSL verifier is outdated).
if (empty($info['certinfo'])) {
$warnings[] = ['selfsignedoruntrustedcertificatewarning', 'tool_mobile'];
} else {
$timenow = time();
$expectedissuer = null;
foreach ($info['certinfo'] as $cert) {
// Check if the signature algorithm is weak (Android won't work with SHA-1).
if ($cert['Signature Algorithm'] == 'sha1WithRSAEncryption' || $cert['Signature Algorithm'] == 'sha1WithRSA') {
$warnings[] = ['insecurealgorithmwarning', 'tool_mobile'];
}
// Check certificate start date.
if (strtotime($cert['Start date']) > $timenow) {
$warnings[] = ['invalidcertificatestartdatewarning', 'tool_mobile'];
}
// Check certificate end date.
if (strtotime($cert['Expire date']) < $timenow) {
$warnings[] = ['invalidcertificateexpiredatewarning', 'tool_mobile'];
}
// Check the chain.
if ($expectedissuer !== null) {
if ($expectedissuer !== $cert['Subject'] || $cert['Subject'] === $cert['Issuer']) {
$warnings[] = ['invalidcertificatechainwarning', 'tool_mobile'];
}
}
$expectedissuer = $cert['Issuer'];
}
}
}
// Now check typical configuration problems.
if ((int) $CFG->userquota === PHP_INT_MAX) {
// In old Moodle version was a text so was possible to have numeric values > PHP_INT_MAX.
$warnings[] = ['invaliduserquotawarning', 'tool_mobile'];
}
// Check ADOdb debug enabled.
if (get_config('auth_db', 'debugauthdb') || get_config('enrol_database', 'debugdb')) {
$warnings[] = ['adodbdebugwarning', 'tool_mobile'];
}
// Check display errors on.
if (!empty($CFG->debugdisplay)) {
$warnings[] = ['displayerrorswarning', 'tool_mobile'];
}
// Check mobile notifications.
$processors = get_message_processors();
$enabled = false;
foreach ($processors as $processor => $status) {
if ($processor == 'airnotifier' && $status->enabled) {
$enabled = true;
}
}
if (!$enabled) {
$warnings[] = ['mobilenotificationsdisabledwarning', 'tool_mobile'];
}
return $warnings;
}
/**
* Generates a QR code with the site URL or for automatic login from the mobile app.
*
* @param stdClass $mobilesettings tool_mobile settings
* @return string base64 data image contents, null if qr disabled
*/
public static function generate_login_qrcode(stdClass $mobilesettings) {
global $CFG, $USER;
if ($mobilesettings->qrcodetype == static::QR_CODE_DISABLED) {
return null;
}
$urlscheme = !empty($mobilesettings->forcedurlscheme) ? $mobilesettings->forcedurlscheme : 'moodlemobile';
$data = $urlscheme . '://' . $CFG->wwwroot;
if ($mobilesettings->qrcodetype == static::QR_CODE_LOGIN) {
$qrloginkey = static::get_qrlogin_key();
$data .= '?qrlogin=' . $qrloginkey . '&userid=' . $USER->id;
}
$qrcode = new core_qrcode($data);
$imagedata = 'data:image/png;base64,' . base64_encode($qrcode->getBarcodePngData(5, 5));
return $imagedata;
}
/**
* Gets Moodle app plan subscription information for the current site as it is returned by the Apps Portal.
*
* @return array Subscription information
*/
public static function get_subscription_information() : ?array {
global $CFG;
// Use session cache to prevent multiple requests.
$cache = \cache::make('tool_mobile', 'subscriptiondata');
$subscriptiondata = $cache->get(0);
if ($subscriptiondata !== false) {
return $subscriptiondata;
}
$mobilesettings = get_config('tool_mobile');
// To validate that the requests come from this site we need to send some private information that only is known by the
// Moodle Apps portal or the Sites registration database.
$credentials = [];
if (!empty($CFG->airnotifieraccesskey)) {
$credentials[] = ['type' => 'airnotifieraccesskey', 'value' => $CFG->airnotifieraccesskey];
}
if (\core\hub\registration::is_registered()) {
$credentials[] = ['type' => 'siteid', 'value' => $CFG->siteidentifier];
}
// Generate a hash key for validating that the request is coming from this site via WS.
$key = complex_random_string(32);
$sitesubscriptionkey = json_encode(['validuntil' => time() + 10 * MINSECS, 'key' => $key]);
set_config('sitesubscriptionkey', $sitesubscriptionkey, 'tool_mobile');
$credentials[] = ['type' => 'sitesubscriptionkey', 'value' => $key];
// Parameters for the WebService returning site information.
$androidappid = empty($mobilesettings->androidappid) ? static::DEFAULT_ANDROID_APP_ID : $mobilesettings->androidappid;
$iosappid = empty($mobilesettings->iosappid) ? static::DEFAULT_IOS_APP_ID : $mobilesettings->iosappid;
$fnparams = (object) [
'siteurl' => $CFG->wwwroot,
'appids' => [$androidappid, $iosappid],
'credentials' => $credentials,
];
// Prepare the arguments for a request to the AJAX nologin endpoint.
$args = [
(object) [
'index' => 0,
'methodname' => 'local_apps_get_site_info',
'args' => $fnparams,
]
];
// Ask the Moodle Apps Portal for the subscription information.
$curl = new curl();
$curl->setopt(array('CURLOPT_TIMEOUT' => 10, 'CURLOPT_CONNECTTIMEOUT' => 10));
$serverurl = static::MOODLE_APPS_PORTAL_URL . "/lib/ajax/service-nologin.php";
$query = 'args=' . urlencode(json_encode($args));
$wsresponse = @json_decode($curl->post($serverurl, $query), true);
$info = $curl->get_info();
if ($curlerrno = $curl->get_errno()) {
// CURL connection error.
debugging("Unexpected response from the Moodle Apps Portal server, CURL error number: $curlerrno");
return null;
} else if ($info['http_code'] != 200) {
// Unexpected error from server.
debugging('Unexpected response from the Moodle Apps Portal server, HTTP code:' . $info['httpcode']);
return null;
} else if (!empty($wsresponse[0]['error'])) {
// Unexpected error from Moodle Apps Portal.
debugging('Unexpected response from the Moodle Apps Portal server:' . json_encode($wsresponse[0]));
return null;
} else if (empty($wsresponse[0]['data'])) {
debugging('Unexpected response from the Moodle Apps Portal server:' . json_encode($wsresponse));
return null;
}
$cache->set(0, $wsresponse[0]['data']);
return $wsresponse[0]['data'];
}
}