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<?php
declare(strict_types=1);
/**
* @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\TwoFactorGateway\Service;
use Exception;
use OCA\TwoFactorGateway\Exception\IdentifierMissingException;
use OCA\TwoFactorGateway\Exception\SmsTransmissionException;
use OCA\TwoFactorGateway\Exception\VerificationException;
use OCA\TwoFactorGateway\Exception\VerificationTransmissionException;
use OCA\TwoFactorGateway\Provider\Factory;
use OCA\TwoFactorGateway\Service\Gateway\Factory as GatewayFactory;
use OCA\TwoFactorGateway\Provider\State;
use OCP\Authentication\TwoFactorAuth\IRegistry;
use OCP\IUser;
use OCP\Security\ISecureRandom;
class SetupService {
/** @var StateStorage */
private $stateStorage;
/** @var GatewayFactory */
private $gatewayFactory;
/** @var Factory */
private $providerFactory;
/** @var ISecureRandom */
private $random;
/** @var IRegistry */
private $providerRegistry;
public function __construct(StateStorage $stateStorage,
GatewayFactory $gatewayFactory,
Factory $providerFactory,
ISecureRandom $random,
IRegistry $providerRegistry) {
$this->stateStorage = $stateStorage;
$this->gatewayFactory = $gatewayFactory;
$this->providerFactory = $providerFactory;
$this->random = $random;
$this->providerRegistry = $providerRegistry;
}
public function getState(IUser $user, string $gatewayName): State {
return $this->stateStorage->get($user, $gatewayName);
}
/**
* @throws IdentifierMissingException
*/
public function getChallengePhoneNumber(IUser $user, string $gatewayName): string {
$state = $this->stateStorage->get($user, $gatewayName);
$identifier = $state->getIdentifier();
if (is_null($identifier)) {
throw new IdentifierMissingException("verified identifier for $gatewayName is missing");
}
return $identifier;
}
/**
* Send out confirmation message and save current identifier in user settings
*/
public function startSetup(IUser $user, string $gatewayName, string $identifier): State {
$verificationNumber = $this->random->generate(6, ISecureRandom::CHAR_DIGITS);
$gateway = $this->gatewayFactory->getGateway($gatewayName);
try {
$gateway->send($user, $identifier, "$verificationNumber is your Nextcloud verification code.");
} catch (SmsTransmissionException $ex) {
throw new VerificationTransmissionException('could not send verification code');
}
return $this->stateStorage->persist(
State::verifying($user, $gatewayName, $identifier, $verificationNumber)
);
}
public function finishSetup(IUser $user, string $gatewayName, string $token): State {
$state = $this->stateStorage->get($user, $gatewayName);
if (is_null($state->getVerificationCode())) {
throw new Exception('no verification code set');
}
if ($state->getVerificationCode() !== $token) {
throw new VerificationException('verification token mismatch');
}
$provider = $this->providerFactory->getProvider($gatewayName);
$this->providerRegistry->enableProviderFor($provider, $user);
return $this->stateStorage->persist(
$state->verify()
);
}
public function disable(IUser $user, string $gatewayName): State {
$provider = $this->providerFactory->getProvider($gatewayName);
$this->providerRegistry->enableProviderFor($provider, $user);
$this->providerRegistry->disableProviderFor($provider, $user);
return $this->stateStorage->persist(
State::disabled($user, $gatewayName)
);
}
}
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