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<?php
declare(strict_types=1);
/**
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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/>.
*
*/
namespace OCA\TwoFactorBackupCodes\Provider;
use OC\App\AppManager;
use OCA\TwoFactorBackupCodes\Service\BackupCodeStorage;
use OCA\TwoFactorBackupCodes\Settings\Personal;
use OCP\Authentication\TwoFactorAuth\IPersonalProviderSettings;
use OCP\Authentication\TwoFactorAuth\IProvider;
use OCP\Authentication\TwoFactorAuth\IProvidesPersonalSettings;
use OCP\IInitialStateService;
use OCP\IL10N;
use OCP\IUser;
use OCP\Template;
class BackupCodesProvider implements IProvider, IProvidesPersonalSettings {
/** @var string */
private $appName;
/** @var BackupCodeStorage */
private $storage;
/** @var IL10N */
private $l10n;
/** @var AppManager */
private $appManager;
/** @var IInitialStateService */
private $initialStateService;
/**
* @param string $appName
* @param BackupCodeStorage $storage
* @param IL10N $l10n
* @param AppManager $appManager
*/
public function __construct(string $appName,
BackupCodeStorage $storage,
IL10N $l10n,
AppManager $appManager,
IInitialStateService $initialStateService) {
$this->appName = $appName;
$this->l10n = $l10n;
$this->storage = $storage;
$this->appManager = $appManager;
$this->initialStateService = $initialStateService;
}
/**
* Get unique identifier of this 2FA provider
*
* @return string
*/
public function getId(): string {
return 'backup_codes';
}
/**
* Get the display name for selecting the 2FA provider
*
* @return string
*/
public function getDisplayName(): string {
return $this->l10n->t('Backup code');
}
/**
* Get the description for selecting the 2FA provider
*
* @return string
*/
public function getDescription(): string {
return $this->l10n->t('Use backup code');
}
/**
* Get the template for rending the 2FA provider view
*
* @param IUser $user
* @return Template
*/
public function getTemplate(IUser $user): Template {
return new Template('twofactor_backupcodes', 'challenge');
}
/**
* Verify the given challenge
*
* @param IUser $user
* @param string $challenge
* @return bool
*/
public function verifyChallenge(IUser $user, string $challenge): bool {
return $this->storage->validateCode($user, $challenge);
}
/**
* Decides whether 2FA is enabled for the given user
*
* @param IUser $user
* @return boolean
*/
public function isTwoFactorAuthEnabledForUser(IUser $user): bool {
return $this->storage->hasBackupCodes($user);
}
/**
* Determine whether backup codes should be active or not
*
* Backup codes only make sense if at least one 2FA provider is active,
* hence this method checks all enabled apps on whether they provide 2FA
* functionality or not. If there's at least one app, backup codes are
* enabled on the personal settings page.
*
* @param IUser $user
* @return boolean
*/
public function isActive(IUser $user): bool {
$appIds = array_filter($this->appManager->getEnabledAppsForUser($user), function ($appId) {
return $appId !== $this->appName;
});
foreach ($appIds as $appId) {
$info = $this->appManager->getAppInfo($appId);
if (isset($info['two-factor-providers']) && count($info['two-factor-providers']) > 0) {
return true;
}
}
return false;
}
/**
* @param IUser $user
*
* @return IPersonalProviderSettings
*/
public function getPersonalSettings(IUser $user): IPersonalProviderSettings {
$state = $this->storage->getBackupCodesState($user);
$this->initialStateService->provideInitialState($this->appName, 'state', $state);
return new Personal();
}
}
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