nextcloud/lib/private/Template/JSConfigHelper.php
Arthur Schiwon 340939e688
fix(Session): avoid password confirmation on SSO
SSO backends like SAML and OIDC tried a trick to suppress password
confirmations as they are not possible by design. At least for SAML it was
not reliable when existing user backends where used as user repositories.

Now we are setting a special scope with the token, and also make sure that
the scope is taken over when tokens are regenerated.

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>
2024-06-05 19:01:13 +02:00

291 lines
12 KiB
PHP

<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Template;
use bantu\IniGetWrapper\IniGetWrapper;
use OC\Authentication\Token\IProvider;
use OC\CapabilitiesManager;
use OC\Share\Share;
use OCP\App\AppPathNotFoundException;
use OCP\App\IAppManager;
use OCP\Authentication\Exceptions\ExpiredTokenException;
use OCP\Authentication\Exceptions\InvalidTokenException;
use OCP\Authentication\Exceptions\WipeTokenException;
use OCP\Constants;
use OCP\Defaults;
use OCP\Files\FileInfo;
use OCP\IConfig;
use OCP\IGroupManager;
use OCP\IInitialStateService;
use OCP\IL10N;
use OCP\ILogger;
use OCP\ISession;
use OCP\IURLGenerator;
use OCP\IUser;
use OCP\Session\Exceptions\SessionNotAvailableException;
use OCP\Share\IManager as IShareManager;
use OCP\User\Backend\IPasswordConfirmationBackend;
use OCP\Util;
class JSConfigHelper {
/** @var array user back-ends excluded from password verification */
private $excludedUserBackEnds = ['user_saml' => true, 'user_globalsiteselector' => true];
public function __construct(
protected IL10N $l,
protected Defaults $defaults,
protected IAppManager $appManager,
protected ISession $session,
protected ?IUser $currentUser,
protected IConfig $config,
protected IGroupManager $groupManager,
protected IniGetWrapper $iniWrapper,
protected IURLGenerator $urlGenerator,
protected CapabilitiesManager $capabilitiesManager,
protected IInitialStateService $initialStateService,
protected IProvider $tokenProvider,
) {
}
public function getConfig(): string {
$userBackendAllowsPasswordConfirmation = true;
if ($this->currentUser !== null) {
$uid = $this->currentUser->getUID();
$backend = $this->currentUser->getBackend();
if ($backend instanceof IPasswordConfirmationBackend) {
$userBackendAllowsPasswordConfirmation = $backend->canConfirmPassword($uid);
} elseif (isset($this->excludedUserBackEnds[$this->currentUser->getBackendClassName()])) {
$userBackendAllowsPasswordConfirmation = false;
}
} else {
$uid = null;
}
// Get the config
$apps_paths = [];
if ($this->currentUser === null) {
$apps = $this->appManager->getInstalledApps();
} else {
$apps = $this->appManager->getEnabledAppsForUser($this->currentUser);
}
foreach ($apps as $app) {
try {
$apps_paths[$app] = $this->appManager->getAppWebPath($app);
} catch (AppPathNotFoundException $e) {
$apps_paths[$app] = false;
}
}
$enableLinkPasswordByDefault = $this->config->getAppValue('core', 'shareapi_enable_link_password_by_default', 'no');
$enableLinkPasswordByDefault = $enableLinkPasswordByDefault === 'yes';
$defaultExpireDateEnabled = $this->config->getAppValue('core', 'shareapi_default_expire_date', 'no') === 'yes';
$defaultExpireDate = $enforceDefaultExpireDate = null;
if ($defaultExpireDateEnabled) {
$defaultExpireDate = (int)$this->config->getAppValue('core', 'shareapi_expire_after_n_days', '7');
$enforceDefaultExpireDate = $this->config->getAppValue('core', 'shareapi_enforce_expire_date', 'no') === 'yes';
}
$outgoingServer2serverShareEnabled = $this->config->getAppValue('files_sharing', 'outgoing_server2server_share_enabled', 'yes') === 'yes';
$defaultInternalExpireDateEnabled = $this->config->getAppValue('core', 'shareapi_default_internal_expire_date', 'no') === 'yes';
$defaultInternalExpireDate = $defaultInternalExpireDateEnforced = null;
if ($defaultInternalExpireDateEnabled) {
$defaultInternalExpireDate = (int)$this->config->getAppValue('core', 'shareapi_internal_expire_after_n_days', '7');
$defaultInternalExpireDateEnforced = $this->config->getAppValue('core', 'shareapi_enforce_internal_expire_date', 'no') === 'yes';
}
$defaultRemoteExpireDateEnabled = $this->config->getAppValue('core', 'shareapi_default_remote_expire_date', 'no') === 'yes';
$defaultRemoteExpireDate = $defaultRemoteExpireDateEnforced = null;
if ($defaultRemoteExpireDateEnabled) {
$defaultRemoteExpireDate = (int)$this->config->getAppValue('core', 'shareapi_remote_expire_after_n_days', '7');
$defaultRemoteExpireDateEnforced = $this->config->getAppValue('core', 'shareapi_enforce_remote_expire_date', 'no') === 'yes';
}
$countOfDataLocation = 0;
$dataLocation = str_replace(\OC::$SERVERROOT . '/', '', $this->config->getSystemValue('datadirectory', ''), $countOfDataLocation);
if ($countOfDataLocation !== 1 || $uid === null || !$this->groupManager->isAdmin($uid)) {
$dataLocation = false;
}
if ($this->currentUser instanceof IUser) {
if ($this->canUserValidatePassword()) {
$lastConfirmTimestamp = $this->session->get('last-password-confirm');
if (!is_int($lastConfirmTimestamp)) {
$lastConfirmTimestamp = 0;
}
} else {
$lastConfirmTimestamp = PHP_INT_MAX;
}
} else {
$lastConfirmTimestamp = 0;
}
$capabilities = $this->capabilitiesManager->getCapabilities(false, true);
$config = [
'auto_logout' => $this->config->getSystemValue('auto_logout', false),
'blacklist_files_regex' => FileInfo::BLACKLIST_FILES_REGEX,
'forbidden_filename_characters' => Util::getForbiddenFileNameChars(),
'loglevel' => $this->config->getSystemValue('loglevel_frontend',
$this->config->getSystemValue('loglevel', ILogger::WARN)
),
'lost_password_link' => $this->config->getSystemValue('lost_password_link', null),
'modRewriteWorking' => $this->config->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true',
'no_unsupported_browser_warning' => $this->config->getSystemValue('no_unsupported_browser_warning', false),
'session_keepalive' => $this->config->getSystemValue('session_keepalive', true),
'session_lifetime' => min($this->config->getSystemValue('session_lifetime', $this->iniWrapper->getNumeric('session.gc_maxlifetime')), $this->iniWrapper->getNumeric('session.gc_maxlifetime')),
'sharing.maxAutocompleteResults' => max(0, $this->config->getSystemValueInt('sharing.maxAutocompleteResults', Constants::SHARING_MAX_AUTOCOMPLETE_RESULTS_DEFAULT)),
'sharing.minSearchStringLength' => $this->config->getSystemValueInt('sharing.minSearchStringLength', 0),
'version' => implode('.', Util::getVersion()),
'versionstring' => \OC_Util::getVersionString(),
'enable_non-accessible_features' => $this->config->getSystemValueBool('enable_non-accessible_features', true),
];
$array = [
"_oc_debug" => $this->config->getSystemValue('debug', false) ? 'true' : 'false',
"_oc_isadmin" => $uid !== null && $this->groupManager->isAdmin($uid) ? 'true' : 'false',
"backendAllowsPasswordConfirmation" => $userBackendAllowsPasswordConfirmation ? 'true' : 'false',
"oc_dataURL" => is_string($dataLocation) ? "\"" . $dataLocation . "\"" : 'false',
"_oc_webroot" => "\"" . \OC::$WEBROOT . "\"",
"_oc_appswebroots" => str_replace('\\/', '/', json_encode($apps_paths)), // Ugly unescape slashes waiting for better solution
"datepickerFormatDate" => json_encode($this->l->l('jsdate', null)),
'nc_lastLogin' => $lastConfirmTimestamp,
'nc_pageLoad' => time(),
"dayNames" => json_encode([
$this->l->t('Sunday'),
$this->l->t('Monday'),
$this->l->t('Tuesday'),
$this->l->t('Wednesday'),
$this->l->t('Thursday'),
$this->l->t('Friday'),
$this->l->t('Saturday')
]),
"dayNamesShort" => json_encode([
$this->l->t('Sun.'),
$this->l->t('Mon.'),
$this->l->t('Tue.'),
$this->l->t('Wed.'),
$this->l->t('Thu.'),
$this->l->t('Fri.'),
$this->l->t('Sat.')
]),
"dayNamesMin" => json_encode([
$this->l->t('Su'),
$this->l->t('Mo'),
$this->l->t('Tu'),
$this->l->t('We'),
$this->l->t('Th'),
$this->l->t('Fr'),
$this->l->t('Sa')
]),
"monthNames" => json_encode([
$this->l->t('January'),
$this->l->t('February'),
$this->l->t('March'),
$this->l->t('April'),
$this->l->t('May'),
$this->l->t('June'),
$this->l->t('July'),
$this->l->t('August'),
$this->l->t('September'),
$this->l->t('October'),
$this->l->t('November'),
$this->l->t('December')
]),
"monthNamesShort" => json_encode([
$this->l->t('Jan.'),
$this->l->t('Feb.'),
$this->l->t('Mar.'),
$this->l->t('Apr.'),
$this->l->t('May.'),
$this->l->t('Jun.'),
$this->l->t('Jul.'),
$this->l->t('Aug.'),
$this->l->t('Sep.'),
$this->l->t('Oct.'),
$this->l->t('Nov.'),
$this->l->t('Dec.')
]),
"firstDay" => json_encode($this->l->l('firstday', null)),
"_oc_config" => json_encode($config),
"oc_appconfig" => json_encode([
'core' => [
'defaultExpireDateEnabled' => $defaultExpireDateEnabled,
'defaultExpireDate' => $defaultExpireDate,
'defaultExpireDateEnforced' => $enforceDefaultExpireDate,
'enforcePasswordForPublicLink' => Util::isPublicLinkPasswordRequired(),
'enableLinkPasswordByDefault' => $enableLinkPasswordByDefault,
'sharingDisabledForUser' => Util::isSharingDisabledForUser(),
'resharingAllowed' => Share::isResharingAllowed(),
'remoteShareAllowed' => $outgoingServer2serverShareEnabled,
'federatedCloudShareDoc' => $this->urlGenerator->linkToDocs('user-sharing-federated'),
'allowGroupSharing' => \OC::$server->get(IShareManager::class)->allowGroupSharing(),
'defaultInternalExpireDateEnabled' => $defaultInternalExpireDateEnabled,
'defaultInternalExpireDate' => $defaultInternalExpireDate,
'defaultInternalExpireDateEnforced' => $defaultInternalExpireDateEnforced,
'defaultRemoteExpireDateEnabled' => $defaultRemoteExpireDateEnabled,
'defaultRemoteExpireDate' => $defaultRemoteExpireDate,
'defaultRemoteExpireDateEnforced' => $defaultRemoteExpireDateEnforced,
]
]),
"_theme" => json_encode([
'entity' => $this->defaults->getEntity(),
'name' => $this->defaults->getName(),
'productName' => $this->defaults->getProductName(),
'title' => $this->defaults->getTitle(),
'baseUrl' => $this->defaults->getBaseUrl(),
'syncClientUrl' => $this->defaults->getSyncClientUrl(),
'docBaseUrl' => $this->defaults->getDocBaseUrl(),
'docPlaceholderUrl' => $this->defaults->buildDocLinkToKey('PLACEHOLDER'),
'slogan' => $this->defaults->getSlogan(),
'logoClaim' => '',
'folder' => \OC_Util::getTheme(),
]),
];
if ($this->currentUser !== null) {
$array['oc_userconfig'] = json_encode([
'avatar' => [
'version' => (int)$this->config->getUserValue($uid, 'avatar', 'version', 0),
'generated' => $this->config->getUserValue($uid, 'avatar', 'generated', 'true') === 'true',
]
]);
}
$this->initialStateService->provideInitialState('core', 'projects_enabled', $this->config->getSystemValueBool('projects.enabled', false));
$this->initialStateService->provideInitialState('core', 'config', $config);
$this->initialStateService->provideInitialState('core', 'capabilities', $capabilities);
// Allow hooks to modify the output values
\OC_Hook::emit('\OCP\Config', 'js', ['array' => &$array]);
$result = '';
// Echo it
foreach ($array as $setting => $value) {
$result .= 'var '. $setting . '='. $value . ';' . PHP_EOL;
}
return $result;
}
protected function canUserValidatePassword(): bool {
try {
$token = $this->tokenProvider->getToken($this->session->getId());
} catch (ExpiredTokenException|WipeTokenException|InvalidTokenException|SessionNotAvailableException) {
// actually we do not know, so we fall back to this statement
return true;
}
$scope = $token->getScopeAsArray();
return !isset($scope['sso-based-login']) || $scope['sso-based-login'] === false;
}
}