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/>.
/**
* This is the external API for this tool.
*
* @package tool_mobile
* @copyright 2016 Juan Leyva
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace tool_mobile;
defined('MOODLE_INTERNAL') || die();
require_once("$CFG->libdir/externallib.php");
require_once("$CFG->dirroot/webservice/lib.php");
use external_api;
use external_files;
use external_function_parameters;
use external_value;
use external_single_structure;
use external_multiple_structure;
use external_warnings;
use context_system;
use moodle_exception;
use moodle_url;
use core_text;
use core_user;
use coding_exception;
/**
* This is the external API for this tool.
*
* @copyright 2016 Juan Leyva
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class external extends external_api {
/**
* Returns description of get_plugins_supporting_mobile() parameters.
*
* @return external_function_parameters
* @since Moodle 3.1
*/
public static function get_plugins_supporting_mobile_parameters() {
return new external_function_parameters(array());
}
/**
* Returns a list of Moodle plugins supporting the mobile app.
*
* @return array an array of warnings and objects containing the plugin information
* @since Moodle 3.1
*/
public static function get_plugins_supporting_mobile() {
return array(
'plugins' => api::get_plugins_supporting_mobile(),
'warnings' => array(),
);
}
/**
* Returns description of get_plugins_supporting_mobile() result value.
*
* @return external_description
* @since Moodle 3.1
*/
public static function get_plugins_supporting_mobile_returns() {
return new external_single_structure(
array(
'plugins' => new external_multiple_structure(
new external_single_structure(
array(
'component' => new external_value(PARAM_COMPONENT, 'The plugin component name.'),
'version' => new external_value(PARAM_NOTAGS, 'The plugin version number.'),
'addon' => new external_value(PARAM_COMPONENT, 'The Mobile addon (package) name.'),
'dependencies' => new external_multiple_structure(
new external_value(PARAM_COMPONENT, 'Mobile addon name.'),
'The list of Mobile addons this addon depends on.'
),
'fileurl' => new external_value(PARAM_URL, 'The addon package url for download
or empty if it doesn\'t exist.'),
'filehash' => new external_value(PARAM_RAW, 'The addon package hash or empty if it doesn\'t exist.'),
'filesize' => new external_value(PARAM_INT, 'The addon package size or empty if it doesn\'t exist.'),
'handlers' => new external_value(PARAM_RAW, 'Handlers definition (JSON)', VALUE_OPTIONAL),
'lang' => new external_value(PARAM_RAW, 'Language strings used by the handlers (JSON)', VALUE_OPTIONAL),
)
)
),
'warnings' => new external_warnings(),
)
);
}
/**
* Returns description of get_public_config() parameters.
*
* @return external_function_parameters
* @since Moodle 3.2
*/
public static function get_public_config_parameters() {
return new external_function_parameters(array());
}
/**
* Returns a list of the site public settings, those not requiring authentication.
*
* @return array with the settings and warnings
* @since Moodle 3.2
*/
public static function get_public_config() {
$result = api::get_public_config();
$result['warnings'] = array();
return $result;
}
/**
* Returns description of get_public_config() result value.
*
* @return external_description
* @since Moodle 3.2
*/
public static function get_public_config_returns() {
return new external_single_structure(
array(
'wwwroot' => new external_value(PARAM_RAW, 'Site URL.'),
'httpswwwroot' => new external_value(PARAM_RAW, 'Site https URL (if httpslogin is enabled).'),
'sitename' => new external_value(PARAM_TEXT, 'Site name.'),
'guestlogin' => new external_value(PARAM_INT, 'Whether guest login is enabled.'),
'rememberusername' => new external_value(PARAM_INT, 'Values: 0 for No, 1 for Yes, 2 for optional.'),
'authloginviaemail' => new external_value(PARAM_INT, 'Whether log in via email is enabled.'),
'registerauth' => new external_value(PARAM_PLUGIN, 'Authentication method for user registration.'),
'forgottenpasswordurl' => new external_value(PARAM_URL, 'Forgotten password URL.'),
'authinstructions' => new external_value(PARAM_RAW, 'Authentication instructions.'),
'authnoneenabled' => new external_value(PARAM_INT, 'Whether auth none is enabled.'),
'enablewebservices' => new external_value(PARAM_INT, 'Whether Web Services are enabled.'),
'enablemobilewebservice' => new external_value(PARAM_INT, 'Whether the Mobile service is enabled.'),
'maintenanceenabled' => new external_value(PARAM_INT, 'Whether site maintenance is enabled.'),
'maintenancemessage' => new external_value(PARAM_RAW, 'Maintenance message.'),
'logourl' => new external_value(PARAM_URL, 'The site logo URL', VALUE_OPTIONAL),
'compactlogourl' => new external_value(PARAM_URL, 'The site compact logo URL', VALUE_OPTIONAL),
'typeoflogin' => new external_value(PARAM_INT, 'The type of login. 1 for app, 2 for browser, 3 for embedded.'),
'launchurl' => new external_value(PARAM_URL, 'SSO login launch URL.', VALUE_OPTIONAL),
'mobilecssurl' => new external_value(PARAM_URL, 'Mobile custom CSS theme', VALUE_OPTIONAL),
'tool_mobile_disabledfeatures' => new external_value(PARAM_RAW, 'Disabled features in the app', VALUE_OPTIONAL),
'identityproviders' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_TEXT, 'The identity provider name.'),
'iconurl' => new external_value(PARAM_URL, 'The icon URL for the provider.'),
'url' => new external_value(PARAM_URL, 'The URL of the provider.'),
)
),
'Identity providers', VALUE_OPTIONAL
),
'country' => new external_value(PARAM_NOTAGS, 'Default site country', VALUE_OPTIONAL),
'agedigitalconsentverification' => new external_value(PARAM_BOOL, 'Whether age digital consent verification
is enabled.', VALUE_OPTIONAL),
'supportname' => new external_value(PARAM_NOTAGS, 'Site support contact name
(only if age verification is enabled).', VALUE_OPTIONAL),
'supportemail' => new external_value(PARAM_EMAIL, 'Site support contact email
(only if age verification is enabled).', VALUE_OPTIONAL),
'autolang' => new external_value(PARAM_INT, 'Whether to detect default language
from browser setting.', VALUE_OPTIONAL),
'lang' => new external_value(PARAM_LANG, 'Default language for the site.', VALUE_OPTIONAL),
'langmenu' => new external_value(PARAM_INT, 'Whether the language menu should be displayed.', VALUE_OPTIONAL),
'langlist' => new external_value(PARAM_RAW, 'Languages on language menu.', VALUE_OPTIONAL),
'locale' => new external_value(PARAM_RAW, 'Sitewide locale.', VALUE_OPTIONAL),
'tool_mobile_minimumversion' => new external_value(PARAM_NOTAGS, 'Minimum required version to access.',
VALUE_OPTIONAL),
'tool_mobile_iosappid' => new external_value(PARAM_ALPHANUM, 'iOS app\'s unique identifier.',
VALUE_OPTIONAL),
'tool_mobile_androidappid' => new external_value(PARAM_NOTAGS, 'Android app\'s unique identifier.',
VALUE_OPTIONAL),
'tool_mobile_setuplink' => new external_value(PARAM_URL, 'App download page.', VALUE_OPTIONAL),
'warnings' => new external_warnings(),
)
);
}
/**
* Returns description of get_config() parameters.
*
* @return external_function_parameters
* @since Moodle 3.2
*/
public static function get_config_parameters() {
return new external_function_parameters(
array(
'section' => new external_value(PARAM_ALPHANUMEXT, 'Settings section name.', VALUE_DEFAULT, ''),
)
);
}
/**
* Returns a list of site settings, filtering by section.
*
* @param string $section settings section name
* @return array with the settings and warnings
* @since Moodle 3.2
*/
public static function get_config($section = '') {
$params = self::validate_parameters(self::get_config_parameters(), array('section' => $section));
$settings = api::get_config($params['section']);
$result['settings'] = array();
foreach ($settings as $name => $value) {
$result['settings'][] = array(
'name' => $name,
'value' => $value,
);
}
$result['warnings'] = array();
return $result;
}
/**
* Returns description of get_config() result value.
*
* @return external_description
* @since Moodle 3.2
*/
public static function get_config_returns() {
return new external_single_structure(
array(
'settings' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_RAW, 'The name of the setting'),
'value' => new external_value(PARAM_RAW, 'The value of the setting'),
)
),
'Settings'
),
'warnings' => new external_warnings(),
)
);
}
/**
* Returns description of get_autologin_key() parameters.
*
* @return external_function_parameters
* @since Moodle 3.2
*/
public static function get_autologin_key_parameters() {
return new external_function_parameters (
array(
'privatetoken' => new external_value(PARAM_ALPHANUM, 'Private token, usually generated by login/token.php'),
)
);
}
/**
* Creates an auto-login key for the current user. Is created only in https sites and is restricted by time and ip address.
*
* Please note that it only works if the request comes from the Moodle mobile or desktop app.
*
* @param string $privatetoken the user private token for validating the request
* @return array with the settings and warnings
* @since Moodle 3.2
*/
public static function get_autologin_key($privatetoken) {
global $CFG, $DB, $USER;
$params = self::validate_parameters(self::get_autologin_key_parameters(), array('privatetoken' => $privatetoken));
$privatetoken = $params['privatetoken'];
$context = context_system::instance();
// We must toletare these two exceptions: forcepasswordchangenotice and usernotfullysetup.
try {
self::validate_context($context);
} catch (moodle_exception $e) {
if ($e->errorcode != 'usernotfullysetup' && $e->errorcode != 'forcepasswordchangenotice') {
// In case we receive a different exception, throw it.
throw $e;
}
}
// Only requests from the Moodle mobile or desktop app. This enhances security to avoid any type of XSS attack.
// This code goes intentionally here and not inside the check_autologin_prerequisites() function because it
// is used by other PHP scripts that can be opened in any browser.
if (!\core_useragent::is_moodle_app()) {
throw new moodle_exception('apprequired', 'tool_mobile');
}
api::check_autologin_prerequisites($USER->id);
if (isset($_GET['privatetoken']) or empty($privatetoken)) {
throw new moodle_exception('invalidprivatetoken', 'tool_mobile');
}
// Check the request counter, we must limit the number of times the privatetoken is sent.
// Between each request 6 minutes are required.
$last = get_user_preferences('tool_mobile_autologin_request_last', 0, $USER);
// Check if we must reset the count.
$timenow = time();
if ($timenow - $last < 6 * MINSECS) {
throw new moodle_exception('autologinkeygenerationlockout', 'tool_mobile');
}
set_user_preference('tool_mobile_autologin_request_last', $timenow, $USER);
// We are expecting a privatetoken linked to the current token being used.
// This WS is only valid when using mobile services via REST (this is intended).
$currenttoken = required_param('wstoken', PARAM_ALPHANUM);
$conditions = array(
'userid' => $USER->id,
'token' => $currenttoken,
'privatetoken' => $privatetoken,
);
if (!$token = $DB->get_record('external_tokens', $conditions)) {
throw new moodle_exception('invalidprivatetoken', 'tool_mobile');
}
$result = array();
$result['key'] = api::get_autologin_key();
$autologinurl = new moodle_url("/$CFG->admin/tool/mobile/autologin.php");
$result['autologinurl'] = $autologinurl->out(false);
$result['warnings'] = array();
return $result;
}
/**
* Returns description of get_autologin_key() result value.
*
* @return external_description
* @since Moodle 3.2
*/
public static function get_autologin_key_returns() {
return new external_single_structure(
array(
'key' => new external_value(PARAM_ALPHANUMEXT, 'Auto-login key for a single usage with time expiration.'),
'autologinurl' => new external_value(PARAM_URL, 'Auto-login URL.'),
'warnings' => new external_warnings(),
)
);
}
/**
* Returns description of get_content() parameters
*
* @return external_function_parameters
* @since Moodle 3.5
*/
public static function get_content_parameters() {
return new external_function_parameters(
array(
'component' => new external_value(PARAM_COMPONENT, 'Component where the class is e.g. mod_assign.'),
'method' => new external_value(PARAM_ALPHANUMEXT, 'Method to execute in class \$component\output\mobile.'),
'args' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_ALPHANUMEXT, 'Param name.'),
'value' => new external_value(PARAM_RAW, 'Param value.')
)
), 'Args for the method are optional.', VALUE_OPTIONAL
)
)
);
}
/**
* Returns a piece of content to be displayed in the Mobile app, it usually returns a template, javascript and
* other structured data that will be used to render a view in the Mobile app.
*
* Callbacks (placed in \$component\output\mobile) that are called by this web service are responsible for doing the
* appropriate security checks to access the information to be returned.
*
* @param string $component name of the component.
* @param string $method function method name in class \$component\output\mobile.
* @param array $args optional arguments for the method.
* @return array HTML, JavaScript and other required data and information to create a view in the app.
* @since Moodle 3.5
* @throws coding_exception
*/
public static function get_content($component, $method, $args = array()) {
global $OUTPUT, $PAGE, $USER;
$params = self::validate_parameters(self::get_content_parameters(),
array(
'component' => $component,
'method' => $method,
'args' => $args
)
);
// Reformat arguments into something less unwieldy.
$arguments = array();
foreach ($params['args'] as $paramargument) {
$arguments[$paramargument['name']] = $paramargument['value'];
}
// The component was validated via the PARAM_COMPONENT parameter type.
$classname = '\\' . $params['component'] .'\output\mobile';
if (!method_exists($classname, $params['method'])) {
throw new coding_exception("Missing method in $classname");
}
$result = call_user_func_array(array($classname, $params['method']), array($arguments));
// Populate otherdata.
$otherdata = array();
if (!empty($result['otherdata'])) {
$result['otherdata'] = (array) $result['otherdata'];
foreach ($result['otherdata'] as $name => $value) {
$otherdata[] = array(
'name' => $name,
'value' => $value
);
}
}
return array(
'templates' => !empty($result['templates']) ? $result['templates'] : array(),
'javascript' => !empty($result['javascript']) ? $result['javascript'] : '',
'otherdata' => $otherdata,
'files' => !empty($result['files']) ? $result['files'] : array(),
'restrict' => !empty($result['restrict']) ? $result['restrict'] : array(),
'disabled' => !empty($result['disabled']) ? true : false,
);
}
/**
* Returns description of get_content() result value
*
* @return array
* @since Moodle 3.5
*/
public static function get_content_returns() {
return new external_single_structure(
array(
'templates' => new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_TEXT, 'ID of the template.'),
'html' => new external_value(PARAM_RAW, 'HTML code.'),
)
),
'Templates required by the generated content.'
),
'javascript' => new external_value(PARAM_RAW, 'JavaScript code.'),
'otherdata' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_RAW, 'Field name.'),
'value' => new external_value(PARAM_RAW, 'Field value.')
)
),
'Other data that can be used or manipulated by the template via 2-way data-binding.'
),
'files' => new external_files('Files in the content.'),
'restrict' => new external_single_structure(
array(
'users' => new external_multiple_structure(
new external_value(PARAM_INT, 'user id'), 'List of allowed users.', VALUE_OPTIONAL
),
'courses' => new external_multiple_structure(
new external_value(PARAM_INT, 'course id'), 'List of allowed courses.', VALUE_OPTIONAL
),
),
'Restrict this content to certain users or courses.'
),
'disabled' => new external_value(PARAM_BOOL, 'Whether we consider this disabled or not.', VALUE_OPTIONAL),
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 3.7
*/
public static function call_external_functions_parameters() {
return new external_function_parameters([
'requests' => new external_multiple_structure(
new external_single_structure([
'function' => new external_value(PARAM_ALPHANUMEXT, 'Function name'),
'arguments' => new external_value(PARAM_RAW, 'JSON-encoded object with named arguments', VALUE_DEFAULT, '{}'),
'settingraw' => new external_value(PARAM_BOOL, 'Return raw text', VALUE_DEFAULT, false),
'settingfilter' => new external_value(PARAM_BOOL, 'Filter text', VALUE_DEFAULT, false),
'settingfileurl' => new external_value(PARAM_BOOL, 'Rewrite plugin file URLs', VALUE_DEFAULT, true),
'settinglang' => new external_value(PARAM_LANG, 'Session language', VALUE_DEFAULT, ''),
])
)
]);
}
/**
* Call multiple external functions and return all responses.
*
* @param array $requests List of requests.
* @return array Responses.
* @since Moodle 3.7
*/
public static function call_external_functions($requests) {
global $SESSION;
$params = self::validate_parameters(self::call_external_functions_parameters(), ['requests' => $requests]);
// We need to check if the functions being called are included in the service of the current token.
// This function only works when using mobile services via REST (this is intended).
$webservicemanager = new \webservice;
$token = $webservicemanager->get_user_ws_token(required_param('wstoken', PARAM_ALPHANUM));
$settings = \external_settings::get_instance();
$defaultlang = current_language();
$responses = [];
foreach ($params['requests'] as $request) {
// Some external functions modify _GET or $_POST data, we need to restore the original data after each call.
$originalget = fullclone($_GET);
$originalpost = fullclone($_POST);
// Set external settings and language.
$settings->set_raw($request['settingraw']);
$settings->set_filter($request['settingfilter']);
$settings->set_fileurl($request['settingfileurl']);
$settings->set_lang($request['settinglang']);
$SESSION->lang = $request['settinglang'] ?: $defaultlang;
// Parse arguments to an array, validation is done in external_api::call_external_function.
$args = @json_decode($request['arguments'], true);
if (!is_array($args)) {
$args = [];
}
if ($webservicemanager->service_function_exists($request['function'], $token->externalserviceid)) {
$response = external_api::call_external_function($request['function'], $args, false);
} else {
// Function not included in the service, return an access exception.
$response = [
'error' => true,
'exception' => [
'errorcode' => 'accessexception',
'module' => 'webservice'
]
];
if (debugging('', DEBUG_DEVELOPER)) {
$response['exception']['debuginfo'] = 'Access to the function is not allowed.';
}
}
if (isset($response['data'])) {
$response['data'] = json_encode($response['data']);
}
if (isset($response['exception'])) {
$response['exception'] = json_encode($response['exception']);
}
$responses[] = $response;
// Restore original $_GET and $_POST.
$_GET = $originalget;
$_POST = $originalpost;
if ($response['error']) {
// Do not process the remaining requests.
break;
}
}
return ['responses' => $responses];
}
/**
* Returns description of method result value
*
* @return external_single_structure
* @since Moodle 3.7
*/
public static function call_external_functions_returns() {
return new external_function_parameters([
'responses' => new external_multiple_structure(
new external_single_structure([
'error' => new external_value(PARAM_BOOL, 'Whether an exception was thrown.'),
'data' => new external_value(PARAM_RAW, 'JSON-encoded response data', VALUE_OPTIONAL),
'exception' => new external_value(PARAM_RAW, 'JSON-encoed exception info', VALUE_OPTIONAL),
])
)
]);
}
/**
* Returns description of get_tokens_for_qr_login() parameters.
*
* @return external_function_parameters
* @since Moodle 3.9
*/
public static function get_tokens_for_qr_login_parameters() {
return new external_function_parameters (
[
'qrloginkey' => new external_value(PARAM_ALPHANUMEXT, 'The user key for validating the request.'),
'userid' => new external_value(PARAM_INT, 'The user the key belongs to.'),
]
);
}
/**
* Returns a WebService token (and private token) for QR login
*
* @param string $qrloginkey the user key generated and embedded into the QR code for validating the request
* @param int $userid the user the key belongs to
* @return array with the tokens and warnings
* @since Moodle 3.9
*/
public static function get_tokens_for_qr_login($qrloginkey, $userid) {
global $PAGE, $DB;
$params = self::validate_parameters(self::get_tokens_for_qr_login_parameters(),
['qrloginkey' => $qrloginkey, 'userid' => $userid]);
$context = context_system::instance();
// We need this to make work the format text functions.
$PAGE->set_context($context);
$qrcodetype = get_config('tool_mobile', 'qrcodetype');
if ($qrcodetype != api::QR_CODE_LOGIN) {
throw new moodle_exception('qrcodedisabled', 'tool_mobile');
}
// Only requests from the Moodle mobile or desktop app. This enhances security to avoid any type of XSS attack.
// This code goes intentionally here and not inside the check_autologin_prerequisites() function because it
// is used by other PHP scripts that can be opened in any browser.
if (!\core_useragent::is_moodle_app()) {
throw new moodle_exception('apprequired', 'tool_mobile');
}
api::check_autologin_prerequisites($params['userid']); // Checks https, avoid site admins using this...
// Validate and delete the key.
$key = validate_user_key($params['qrloginkey'], 'tool_mobile', null);
delete_user_key('tool_mobile', $params['userid']);
// Double check key belong to user.
if ($key->userid != $params['userid']) {
throw new moodle_exception('invalidkey');
}
// Key validated, check user.
$user = core_user::get_user($key->userid, '*', MUST_EXIST);
core_user::require_active_user($user, true, true);
// Generate WS tokens.
\core\session\manager::set_user($user);
// Check if the service exists and is enabled.
$service = $DB->get_record('external_services', ['shortname' => MOODLE_OFFICIAL_MOBILE_SERVICE, 'enabled' => 1]);
if (empty($service)) {
// will throw exception if no token found
throw new moodle_exception('servicenotavailable', 'webservice');
}
// Get an existing token or create a new one.
$token = external_generate_token_for_current_user($service);
$privatetoken = $token->privatetoken; // Save it here, the next function removes it.
external_log_token_request($token);
$result = [
'token' => $token->token,
'privatetoken' => $privatetoken ?: '',
'warnings' => [],
];
return $result;
}
/**
* Returns description of get_tokens_for_qr_login() result value.
*
* @return external_description
* @since Moodle 3.9
*/
public static function get_tokens_for_qr_login_returns() {
return new external_single_structure(
[
'token' => new external_value(PARAM_ALPHANUM, 'A valid WebService token for the official mobile app service.'),
'privatetoken' => new external_value(PARAM_ALPHANUM, 'Private token used for auto-login processes.'),
'warnings' => new external_warnings(),
]
);
}
/**
* Returns description of validate_subscription_key() parameters.
*
* @return external_function_parameters
* @since Moodle 3.9
*/
public static function validate_subscription_key_parameters() {
return new external_function_parameters(
[
'key' => new external_value(PARAM_RAW, 'Site subscription temporary key.'),
]
);
}
/**
* Check if the given site subscription key is valid
*
* @param string $key subscriptiion temporary key
* @return array with the settings and warnings
* @since Moodle 3.9
*/
public static function validate_subscription_key(string $key): array {
global $CFG, $PAGE;
$params = self::validate_parameters(self::validate_subscription_key_parameters(), ['key' => $key]);
$context = context_system::instance();
$PAGE->set_context($context);
$validated = false;
$sitesubscriptionkey = get_config('tool_mobile', 'sitesubscriptionkey');
if (!empty($sitesubscriptionkey) && $CFG->enablemobilewebservice && empty($CFG->disablemobileappsubscription)) {
$sitesubscriptionkey = json_decode($sitesubscriptionkey);
$validated = time() < $sitesubscriptionkey->validuntil && $params['key'] === $sitesubscriptionkey->key;
// Delete existing, even if not validated to enforce security and attacks prevention.
unset_config('sitesubscriptionkey', 'tool_mobile');
}
return [
'validated' => $validated,
'warnings' => [],
];
}
/**
* Returns description of validate_subscription_key() result value.
*
* @return external_description
* @since Moodle 3.9
*/
public static function validate_subscription_key_returns() {
return new external_single_structure(
[
'validated' => new external_value(PARAM_BOOL, 'Whether the key is validated or not.'),
'warnings' => new external_warnings(),
]
);
}
}