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72f8324ec5
This is a new script that can call any function in the built-in AJAX webservice. This is a new system service that is added at install time (like the mobile webservice). It has no protocols added to it, but it accessible by a new ajax script /lib/ajax/service.php. Requests and responses to the script are required to be in json format, and multiple functions can be called in a single request.
90 lines
3.1 KiB
PHP
90 lines
3.1 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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* This file is used to call any registered externallib function in Moodle.
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*
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* It will process more than one request and return more than one response if required.
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* It is recommended to add webservice functions and re-use this script instead of
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* writing any new custom ajax scripts.
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*
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* @since Moodle 2.9
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* @package core
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* @copyright 2015 Damyon Wiese
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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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define('AJAX_SCRIPT', true);
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require_once(dirname(__FILE__) . '/../../config.php');
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require_once($CFG->libdir . '/externallib.php');
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require_login(null, true, null, true, true);
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$rawjson = file_get_contents('php://input');
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$requests = json_decode($rawjson, true);
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if ($requests === null) {
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$lasterror = json_last_error_msg();
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throw new coding_exception('Invalid json in request: ' . $lasterror);
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}
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$responses = array();
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foreach ($requests as $request) {
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$response = array();
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$methodname = clean_param($request['methodname'], PARAM_ALPHANUMEXT);
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$index = clean_param($request['index'], PARAM_INT);
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$args = $request['args'];
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try {
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$externalfunctioninfo = external_function_info($methodname);
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if (!$externalfunctioninfo->allowed_from_ajax) {
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throw new moodle_exception('servicenotavailable', 'webservice');
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}
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// Validate params, this also sorts the params properly, we need the correct order in the next part.
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$callable = array($externalfunctioninfo->classname, 'validate_parameters');
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$params = call_user_func($callable,
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$externalfunctioninfo->parameters_desc,
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$args);
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// Execute - gulp!
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$callable = array($externalfunctioninfo->classname, $externalfunctioninfo->methodname);
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$result = call_user_func_array($callable,
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array_values($params));
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$response['error'] = false;
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$response['data'] = $result;
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$responses[$index] = $response;
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} catch (Exception $e) {
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$jsonexception = get_exception_info($e);
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unset($jsonexception->a);
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if (!debugging('', DEBUG_DEVELOPER)) {
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unset($jsonexception->debuginfo);
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unset($jsonexception->backtrace);
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}
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$response['error'] = true;
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$response['exception'] = $jsonexception;
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$responses[$index] = $response;
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// Do not process the remaining requests.
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break;
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}
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}
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echo json_encode($responses);
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