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externallib.php
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/
externallib.php
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<?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/>.
/**
* external API for mobile web services
*
* @package core
* @subpackage webservice
* @copyright 2011 Moodle Pty Ltd (http://moodle.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* Web service related functions
*/
class core_webservice_external extends external_api {
/**
* Returns description of method parameters
* @return external_function_parameters
*/
public static function get_site_info_parameters() {
return new external_function_parameters(
array('serviceshortnames' => new external_multiple_structure (
new external_value(
PARAM_ALPHANUMEXT,
'service shortname'),
'DEPRECATED PARAMETER - it was a design error in the original implementation. It is ignored now. (parameter kept for backward compatibility)',
VALUE_DEFAULT,
array()
),
)
);
}
/**
* Return user information including profile picture + basic site information
* Note:
* - no capability checking because we return just known information by logged user
* @param array $serviceshortnames - DEPRECATED PARAMETER - values will be ignored - it was an original design error, we keep for backward compatibility.
* @return array
*/
public function get_site_info($serviceshortnames = array()) {
global $USER, $SITE, $CFG, $DB;
$params = self::validate_parameters(self::get_site_info_parameters(),
array('serviceshortnames'=>$serviceshortnames));
$profileimageurl = moodle_url::make_pluginfile_url(
get_context_instance(CONTEXT_USER, $USER->id)->id, 'user', 'icon', NULL, '/', 'f1');
//site information
$siteinfo = array(
'sitename' => $SITE->fullname,
'siteurl' => $CFG->wwwroot,
'username' => $USER->username,
'firstname' => $USER->firstname,
'lastname' => $USER->lastname,
'fullname' => fullname($USER),
'userid' => $USER->id,
'userpictureurl' => $profileimageurl->out(false)
);
//Retrieve the service and functions from the web service linked to the token
//If you call this function directly from external (not a web service call),
//then it will still return site info without information about a service
//Note: wsusername/wspassword ws authentication is not supported.
$functions = array();
if ($CFG->enablewebservices) { //no need to check token if web service are disabled and not a ws call
$token = optional_param('wstoken', '', PARAM_ALPHANUM);
if (!empty($token)) { //no need to run if not a ws call
//retrieve service shortname
$servicesql = 'SELECT s.*
FROM {external_services} s, {external_tokens} t
WHERE t.externalserviceid = s.id AND token = ? AND t.userid = ? AND s.enabled = 1';
$service = $DB->get_record_sql($servicesql, array($token, $USER->id));
$siteinfo['downloadfiles'] = $service->downloadfiles;
if (!empty($service)) {
//retrieve the functions
$functionssql = "SELECT f.*
FROM {external_functions} f, {external_services_functions} sf
WHERE f.name = sf.functionname AND sf.externalserviceid = ?";
$functions = $DB->get_records_sql($functionssql, array($service->id));
} else {
throw new coding_exception('No service found in get_site_info: something is buggy, it should have fail at the ws server authentication layer.');
}
}
}
//built up the returned values of the list of functions
$componentversions = array();
$avalaiblefunctions = array();
foreach ($functions as $function) {
$functioninfo = array();
$functioninfo['name'] = $function->name;
if ($function->component == 'moodle') {
$version = $CFG->version; //moodle version
} else {
$versionpath = get_component_directory($function->component).'/version.php';
if (is_readable($versionpath)) {
//we store the component version once retrieved (so we don't load twice the version.php)
if (!isset($componentversions[$function->component])) {
include($versionpath);
$componentversions[$function->component] = $plugin->version;
$version = $plugin->version;
} else {
$version = $componentversions[$function->component];
}
} else {
//function component should always have a version.php,
//otherwise the function should have been described with component => 'moodle'
throw new moodle_exception('missingversionfile', 'webservice', '', $function->component);
}
}
$functioninfo['version'] = $version;
$avalaiblefunctions[] = $functioninfo;
}
$siteinfo['functions'] = $avalaiblefunctions;
return $siteinfo;
}
/**
* Returns description of method result value
* @return external_single_structure
*/
public static function get_site_info_returns() {
return new external_single_structure(
array(
'sitename' => new external_value(PARAM_RAW, 'site name'),
'username' => new external_value(PARAM_RAW, 'username'),
'firstname' => new external_value(PARAM_TEXT, 'first name'),
'lastname' => new external_value(PARAM_TEXT, 'last name'),
'fullname' => new external_value(PARAM_TEXT, 'user full name'),
'userid' => new external_value(PARAM_INT, 'user id'),
'siteurl' => new external_value(PARAM_RAW, 'site url'),
'userpictureurl' => new external_value(PARAM_URL, 'the user profile picture'),
'functions' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_RAW, 'function name'),
'version' => new external_value(PARAM_FLOAT, 'The version number of moodle site/local plugin linked to the function')
), 'functions that are available')
),
'downloadfiles' => new external_value(PARAM_INT, '1 if users are allowed to download files, 0 if not', VALUE_OPTIONAL),
)
);
}
}
/**
* Deprecated web service related functions
* @deprecated since Moodle 2.2 please use core_webservice_external instead
*/
class moodle_webservice_external extends external_api {
/**
* Returns description of method parameters
* @deprecated since Moodle 2.2 please use core_webservice_external::get_site_info_parameters instead
* @return external_function_parameters
*/
public static function get_siteinfo_parameters() {
return core_webservice_external::get_site_info_parameters();
}
/**
* Return user information including profile picture + basic site information
* Note:
* - no capability checking because we return just known information by logged user
* @deprecated since Moodle 2.2 please use core_webservice_external::get_site_info instead
* @param array $serviceshortnames of service shortnames - the functions of these services will be returned
* @return array
*/
public function get_siteinfo($serviceshortnames = array()) {
return core_webservice_external::get_site_info($serviceshortnames);
}
/**
* Returns description of method result value
* @deprecated since Moodle 2.2 please use core_webservice_external::get_site_info_returns instead
* @return external_single_structure
*/
public static function get_siteinfo_returns() {
return core_webservice_external::get_site_info_returns();
}
}