96 lines
3.8 KiB
PHP
96 lines
3.8 KiB
PHP
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<?php
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namespace Jahnke\DiscourseSso\Controller;
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/***************************************************************
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* Copyright notice
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*
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* (c) 2016 Dirk Jahnke <dirk.jahnke@mailbox.org>
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*
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* All rights reserved
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*
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* This script is part of the TYPO3 project. The TYPO3 project is
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* 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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* The GNU General Public License can be found at
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* http://www.gnu.org/copyleft/gpl.html.
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*
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* This script 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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* This copyright notice MUST APPEAR in all copies of the script!
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***************************************************************/
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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/**
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* Controller for the Member object
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*
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* @version $Id$
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* @copyright Copyright belongs to the respective authors
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* @license http://www.gnu.org/licenses/gpl.html GNU General Public License, version 3 or later
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*/
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class SsoController extends \TYPO3\CMS\Scheduler\Task\AbstractTask
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{
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private function hashs_are_equal($data, $sig) {
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if (!$data || !$sig || !is_string($data) || !is_string($sig))
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return false;
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if (strlen($data) != strlen($sig))
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return false;
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if (strcmp($data, $sig) === 0)
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return true;
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return false;
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}
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/**
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*/
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public function authenticateAction() {
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$user = NULL;
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if (isset($GLOBALS['TSFE']) && isset($GLOBALS['TSFE']->fe_user) && isset($GLOBALS['TSFE']->fe_user->user)) {
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$user = $GLOBALS['TSFE']->fe_user->user;
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}
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if (isset($user)) {
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$sso = urldecode(GeneralUtility::_GP('sso'));
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$sig = GeneralUtility::_GP('sig');
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$userId = $user['uid'];
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$userEmail = $user['email'];
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$userName = $user['username'];
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$name = $user['name'];
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if (!$this->hashs_are_equal(hash_hmac('sha256', $sso, $this->settings['discourse_sso_shared_key']), $sig)) {
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header("HTTP/1.1 403 Forbidden");
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$this->throwStatus(403, "Bad SSO request");
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} else {
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// valid $sso string available, convert it
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parse_str(base64_decode($sso), $receivedPayload);
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$nonce = $receivedPayload['nonce'];
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$parameters = array(
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'nonce' => $nonce,
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'external_id' => $userId,
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'email' => $userEmail,
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'username' => $userName,
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'name' => $name
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);
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$payload = base64_encode(http_build_query($parameters));
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$query = http_build_query(array('sso' => $payload, 'sig' => hash_hmac('sha256', $payload, $this->settings['discourse_sso_shared_key'])));
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$statusCode = $this->settings['discourse_sso_redirect_statuscode'];
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if (!$statusCode || ($statusCode < 300 || $statusCode > 308)) {
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// set default:
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$statusCode = 303;
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}
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$this->redirectToUri($this->settings['discourse_sso_redirect'] . '/session/sso_login?' . $query, 0, 302);
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}
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} else {
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// no user logged in
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// wrong setup! This plugin should be enabled only, if a user login exists
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return "<div><b>ERROR!</b> You should not see this message! This plugin should be made available only, if a Frontend User is logged in! Please change this in the setup of this content element.";
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}
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}
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}
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?>
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