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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/>.
namespace core\oauth2\service;
use core\oauth2\issuer;
use core\oauth2\endpoint;
use core\oauth2\user_field_mapping;
use core\oauth2\discovery\openidconnect;
/**
* Class for Facebook oAuth service, with the specific methods related to it.
*
* @package core
* @copyright 2021 Sara Arjona (sara@moodle.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class facebook extends openidconnect implements issuer_interface {
/**
* Build an OAuth2 issuer, with all the default values for this service.
*
* @return issuer The issuer initialised with proper default values.
*/
public static function init(): issuer {
$record = (object) [
'name' => 'Facebook',
'image' => 'https://facebookbrand.com/wp-content/uploads/2016/05/flogo_rgb_hex-brc-site-250.png',
'baseurl' => '',
'loginscopes' => 'public_profile email',
'loginscopesoffline' => 'public_profile email',
'showonloginpage' => issuer::EVERYWHERE,
'servicetype' => 'facebook',
];
$issuer = new issuer(0, $record);
return $issuer;
}
/**
* Create endpoints for this issuer.
*
* @param issuer $issuer Issuer the endpoints should be created for.
* @return issuer
*/
public static function create_endpoints(issuer $issuer): issuer {
// The Facebook API version.
$apiversion = '2.12';
// The Graph API URL.
$graphurl = 'https://graph.facebook.com/v' . $apiversion;
// User information fields that we want to fetch.
$infofields = [
'id',
'first_name',
'last_name',
'picture.type(large)',
'name',
'email',
];
$endpoints = [
'authorization_endpoint' => sprintf('https://www.facebook.com/v%s/dialog/oauth', $apiversion),
'token_endpoint' => $graphurl . '/oauth/access_token',
'userinfo_endpoint' => $graphurl . '/me?fields=' . implode(',', $infofields)
];
foreach ($endpoints as $name => $url) {
$record = (object) [
'issuerid' => $issuer->get('id'),
'name' => $name,
'url' => $url
];
$endpoint = new endpoint(0, $record);
$endpoint->create();
}
// Create the field mappings.
$mapping = [
'name' => 'alternatename',
'last_name' => 'lastname',
'email' => 'email',
'first_name' => 'firstname',
'picture-data-url' => 'picture',
];
foreach ($mapping as $external => $internal) {
$record = (object) [
'issuerid' => $issuer->get('id'),
'externalfield' => $external,
'internalfield' => $internal
];
$userfieldmapping = new user_field_mapping(0, $record);
$userfieldmapping->create();
}
return $issuer;
}
}
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