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<?php
/**
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @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 OCP\Authentication\TwoFactorAuth\IProvider;
use OCP\IL10N;
use OCP\IUser;
use OCP\Template;
class BackupCodesProvider implements IProvider {
/** @var string */
private $appName;
/** @var BackupCodeStorage */
private $storage;
/** @var IL10N */
private $l10n;
/** @var AppManager */
private $appManager;
/**
* @param string $appName
* @param BackupCodeStorage $storage
* @param IL10N $l10n
* @param AppManager $appManager
*/
public function __construct($appName, BackupCodeStorage $storage, IL10N $l10n, AppManager $appManager) {
$this->appName = $appName;
$this->l10n = $l10n;
$this->storage = $storage;
$this->appManager = $appManager;
}
/**
* Get unique identifier of this 2FA provider
*
* @return string
*/
public function getId() {
return 'backup_codes';
}
/**
* Get the display name for selecting the 2FA provider
*
* @return string
*/
public function getDisplayName() {
return $this->l10n->t('Backup code');
}
/**
* Get the description for selecting the 2FA provider
*
* @return string
*/
public function getDescription() {
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) {
$tmpl = new Template('twofactor_backupcodes', 'challenge');
return $tmpl;
}
/**
* Verify the given challenge
*
* @param IUser $user
* @param string $challenge
*/
public function verifyChallenge(IUser $user, $challenge) {
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) {
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) {
$appIds = array_filter($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;
}
}