user_saml/appinfo/app.php

214 lines
6.2 KiB
PHP

<?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;
}
try {
$urlGenerator = \OC::$server->getURLGenerator();
$l = \OC::$server->getL10N('user_saml');
$config = \OC::$server->getConfig();
$request = \OC::$server->getRequest();
$userSession = \OC::$server->getUserSession();
$session = \OC::$server->getSession();
} catch (Throwable $e) {
\OC::$server->getLogger()->logException($e);
return;
}
$samlSettings = new \OCA\User_SAML\SAMLSettings(
$urlGenerator,
$config,
$request,
$session
);
$userData = new \OCA\User_SAML\UserData(
new \OCA\User_SAML\UserResolver(\OC::$server->getUserManager()),
$samlSettings,
$config
);
$userBackend = new \OCA\User_SAML\UserBackend(
$config,
$urlGenerator,
\OC::$server->getSession(),
\OC::$server->getDatabaseConnection(),
\OC::$server->getUserManager(),
\OC::$server->getGroupManager(),
$samlSettings,
\OC::$server->getLogger(),
$userData
);
$userBackend->registerBackends(\OC::$server->getUserManager()->getBackends());
OC_User::useBackend($userBackend);
$params = [];
// 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(1));
} catch (\OneLogin\SAML2\Error $e) {
$returnScript = true;
}
$type = 'saml';
break;
case 'environment-variable':
$type = 'environment-variable';
break;
default:
return;
}
if ($type === 'environment-variable') {
// We should ignore oauth2 token endpoint (oauth can send the credentials as basic auth which will fail with apache auth)
$uri = $request->getRequestUri();
if (substr($uri, -24) === '/apps/oauth/api/v1/token') {
return;
}
OC_User::handleApacheAuth();
}
if($returnScript === true) {
return;
}
$app = \OC::$server->query(\OCA\User_SAML\AppInfo\Application::class);
$app->registerDavAuth();
$redirectSituation = false;
$user = $userSession->getUser();
if ($user !== null) {
$enabled = $user->isEnabled();
if ($enabled === false) {
$targetUrl = $urlGenerator->linkToRouteAbsolute(
'user_saml.SAML.genericError',
[
'message' => $l->t('This user account is disabled, please contact your administrator.')
]
);
header('Location: '.$targetUrl);
exit();
}
}
// 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 !== '') {
try {
$params = $request->getParams();
} catch (\LogicException $e) {
// ignore exception when PUT is called since getParams cannot parse parameters in that case
}
if (isset($params['direct'])) {
return;
}
$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([\OCP\IRequest::USER_AGENT_CLIENT_DESKTOP])) {
$redirectSituation = true;
if (preg_match('/^.*\/(\d+\.\d+\.\d+).*$/', $request->getHeader('USER_AGENT'), $matches) === 1) {
$versionstring = $matches[1];
if (version_compare($versionstring, '2.5.0', '>=') === true) {
$redirectSituation = false;
}
}
}
}
}
$multipleUserBackEnds = $samlSettings->allowMultipleUserBackEnds();
$configuredIdps = $samlSettings->getListOfIdps();
$showLoginOptions = $multipleUserBackEnds || count($configuredIdps) > 1;
if ($redirectSituation === true && $showLoginOptions) {
try {
$params = $request->getParams();
} catch (\LogicException $e) {
// ignore exception when PUT is called since getParams cannot parse parameters in that case
}
$redirectUrl = '';
if(isset($params['redirect_url'])) {
$redirectUrl = $params['redirect_url'];
}
$targetUrl = $urlGenerator->linkToRouteAbsolute(
'user_saml.SAML.selectUserBackEnd',
[
'redirectUrl' => $redirectUrl
]
);
header('Location: '.$targetUrl);
exit();
}
if($redirectSituation === true) {
try {
$params = $request->getParams();
} catch (\LogicException $e) {
// ignore exception when PUT is called since getParams cannot parse parameters in that case
}
$originalUrl = '';
if(isset($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' => $originalUrl,
'idp' => 1,
]
);
header('Location: '.$targetUrl);
exit();
}