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<?php
/**
* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
require_once __DIR__ . '/../3rdparty/vendor/autoload.php';
// If we run in CLI mode do not setup the app as it can fail the OCC execution
// since the URLGenerator isn't accessible.
$cli = false;
if(OC::$CLI) {
$cli = true;
}
$urlGenerator = \OC::$server->getURLGenerator();
$config = \OC::$server->getConfig();
$request = \OC::$server->getRequest();
$userSession = \OC::$server->getUserSession();
$samlSettings = new \OCA\User_SAML\SAMLSettings(
$urlGenerator,
$config,
$request
);
$userBackend = new \OCA\User_SAML\UserBackend(
$config,
$urlGenerator,
\OC::$server->getSession(),
\OC::$server->getDatabaseConnection(),
\OC::$server->getUserManager()
);
$userBackend->registerBackends(\OC::$server->getUserManager()->getBackends());
OC_User::useBackend($userBackend);
OC_User::handleApacheAuth();
// Setting up the one login config may fail, if so, do not catch the requests later.
$returnScript = false;
$type = '';
switch($config->getAppValue('user_saml', 'type')) {
case 'saml':
try {
$oneLoginSettings = new \OneLogin_Saml2_Settings($samlSettings->getOneLoginSettingsArray());
} catch (OneLogin_Saml2_Error $e) {
$returnScript = true;
}
$type = 'saml';
break;
case 'environment-variable':
$type = 'environment-variable';
break;
}
if($returnScript === true) {
return;
}
$redirectSituation = false;
// All requests that are not authenticated and match against the "/login" route are
// redirected to the SAML login endpoint
if(!$cli &&
!$userSession->isLoggedIn() &&
\OC::$server->getRequest()->getPathInfo() === '/login' &&
$type !== '') {
$redirectSituation = true;
}
// If a request to OCS or remote.php is sent by the official desktop clients it can
// be intercepted as it supports SAML. All other clients don't yet and thus we
// require the usage of application specific passwords there.
//
// However, it is an opt-in setting to use SAML for the desktop clients. For better
// UX (users don't have to reauthenticate) we default to disallow the access via
// SAML at the moment.
$useSamlForDesktopClients = $config->getAppValue('user_saml', 'general-use_saml_auth_for_desktop', '0');
if($useSamlForDesktopClients === '1') {
$currentUrl = substr(explode('?',$request->getRequestUri(), 2)[0], strlen(\OC::$WEBROOT));
if(substr($currentUrl, 0, 12) === '/remote.php/' || substr($currentUrl, 0, 5) === '/ocs/') {
if(!$userSession->isLoggedIn() && $request->isUserAgent([\OC\AppFramework\Http\Request::USER_AGENT_OWNCLOUD_DESKTOP])) {
$redirectSituation = true;
}
}
}
if($redirectSituation === true) {
$params = $request->getParams();
$originalUrl = '';
if(isset($params['redirect_url'])) {
$originalUrl = $urlGenerator->getAbsoluteURL($params['redirect_url']);
}
$csrfToken = \OC::$server->getCsrfTokenManager()->getToken();
$targetUrl = $urlGenerator->linkToRouteAbsolute(
'user_saml.SAML.login',
[
'requesttoken' => $csrfToken->getEncryptedValue(),
'originalUrl' => $originalUrl,
]
);
header('Location: '.$targetUrl);
exit();
}
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