nextcloud/apps/oauth2/lib/Service/ClientService.php

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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2025 Nextcloud GmbH
* SPDX-FileContributor: Carl Schwan
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\OAuth2\Service;
use OC\Authentication\Token\IProvider as IAuthTokenProvider;
use OCA\OAuth2\Db\AccessTokenMapper;
use OCA\OAuth2\Db\Client;
use OCA\OAuth2\Db\ClientMapper;
use OCP\Authentication\Exceptions\InvalidTokenException;
use OCP\Authentication\Exceptions\WipeTokenException;
use OCP\IUser;
use OCP\IUserManager;
use OCP\Security\ICrypto;
use OCP\Security\ISecureRandom;
use Psr\Log\LoggerInterface;
class ClientService {
public const validChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
public function __construct(
private readonly ISecureRandom $secureRandom,
private readonly ICrypto $crypto,
private readonly ClientMapper $clientMapper,
private readonly IUserManager $userManager,
private readonly IAuthTokenProvider $tokenProvider,
private readonly LoggerInterface $logger,
private readonly AccessTokenMapper $accessTokenMapper,
) {
}
/**
* @param non-empty-string $name
* @param non-empty-string $redirectUri
* @return array{
* id: int,
* name: string,
* redirectUri: string,
* clientId: string,
* clientSecret: string,
* }
*/
public function addClient(string $name, string $redirectUri): array {
$client = new Client();
$client->setName($name);
$client->setRedirectUri($redirectUri);
$secret = $this->secureRandom->generate(64, self::validChars);
$hashedSecret = bin2hex($this->crypto->calculateHMAC($secret));
$client->setSecret($hashedSecret);
$client->setClientIdentifier($this->secureRandom->generate(64, self::validChars));
$client = $this->clientMapper->insert($client);
return [
'id' => $client->getId(),
'name' => $client->getName(),
'redirectUri' => $client->getRedirectUri(),
'clientId' => $client->getClientIdentifier(),
'clientSecret' => $secret,
];
}
public function deleteClient(int $id): void {
$client = $this->clientMapper->getByUid($id);
$this->userManager->callForSeenUsers(function (IUser $user) use ($client): void {
// Skip tokens that are marked for remote wipe so revoking the
// OAuth2 client does not silently cancel a pending wipe.
$tokens = $this->tokenProvider->getTokenByUser($user->getUID());
foreach ($tokens as $token) {
if ($token->getName() !== $client->getName()) {
continue;
}
try {
$this->tokenProvider->getTokenById($token->getId());
} catch (WipeTokenException) {
$this->logger->info('Preserving token {tokenId} of user {uid}: marked for remote wipe, OAuth2 client revoke would cancel the wipe.', [
'tokenId' => $token->getId(),
'uid' => $user->getUID(),
]);
continue;
} catch (InvalidTokenException) {
// Token already invalid; let invalidateTokenById handle it.
}
$this->tokenProvider->invalidateTokenById($user->getUID(), $token->getId());
}
});
$this->accessTokenMapper->deleteByClientId($id);
$this->clientMapper->delete($client);
}
}