Files
nextcloud-ng_backup/lib/Controller/AdminApiController.php
T
dillard 075f2fac6f M5: deletion delay with trash, passphrase slots, ransomware documentation
- removed snapshots go to a trash on the location and their data is only
  freed after the deletion delay, which is chosen when the key is created
  (default 7 days, 1-365) and cannot be changed afterwards; any admin can
  bring them back (occ backup:trash, backup:trash:restore, web UI)
- up to three passphrase slots open the same master key (like LUKS), so
  one person leaving or dying does not lock the company out; slot changes
  are written to every location, announced to all admins and require a
  new recovery kit confirmation, while backups keep running
- occ backup:key:slots, backup:key:slot:add|replace|remove; key init takes
  --label and --delete-delay-days
- web UI: deletion delay and first slot at key creation, slot management,
  trash per location with restore; all behind password confirmation
- README: key, slots (safe / CTO / head of IT), and protection against
  ransomware: object lock in compliance mode (e.g. 90 days), credentials
  without delete rights, provider snapshots, off-site copy
2026-10-02 03:01:44 +02:00

255 lines
10 KiB
PHP

<?php
declare(strict_types=1);
// SPDX-FileCopyrightText: 2026 Dillard Blom
// SPDX-License-Identifier: AGPL-3.0-or-later
namespace OCA\NgBackup\Controller;
use OCA\NgBackup\AppInfo\Application;
use OCA\NgBackup\BackgroundJob\RestoreJob;
use OCA\NgBackup\Command\KeyConfirm;
use OCA\NgBackup\Db\Run;
use OCA\NgBackup\Db\RunMapper;
use OCA\NgBackup\Db\SnapshotMapper;
use OCA\NgBackup\Service\BackupService;
use OCA\NgBackup\Service\KeyService;
use OCA\NgBackup\Service\RestoreService;
use OCA\NgBackup\Service\TargetService;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\Attribute\NoCSRFRequired;
use OCP\AppFramework\Http\Attribute\PasswordConfirmationRequired;
use OCP\AppFramework\Http\DataDownloadResponse;
use OCP\AppFramework\Http\JSONResponse;
use OCP\BackgroundJob\IJobList;
use OCP\IAppConfig;
use OCP\IRequest;
use OCP\IUserSession;
/**
* JSON API for the admin settings page. Every method requires an admin (the AppFramework
* default for controllers without NoAdminRequired) and a valid CSRF token.
*/
class AdminApiController extends Controller {
public function __construct(
IRequest $request,
private KeyService $keys,
private TargetService $targets,
private BackupService $backups,
private RestoreService $restore,
private RunMapper $runs,
private SnapshotMapper $snapshots,
private IAppConfig $appConfig,
private IJobList $jobs,
private IUserSession $session,
private \OCA\NgBackup\Service\AlertService $alerts,
private \OCA\NgBackup\Service\KeySlotService $slots,
private \OCA\NgBackup\Service\PruneService $prune,
) {
parent::__construct(Application::APP_ID, $request);
}
public function status(): JSONResponse {
$targets = [];
foreach ($this->targets->list() as $t) {
$targets[] = ['id' => $t->getId(), 'name' => $t->getName(), 'backend' => $t->getBackend(), 'path' => $t->getBasePath(),
'repositoryId' => $t->getRepositoryId(), 'createdAt' => $t->getCreatedAt()];
}
$runs = array_map(fn (Run $r) => $this->runJson($r), $this->runs->findRecent(15));
return new JSONResponse([
'key' => ['initialized' => $this->keys->isInitialized(), 'fingerprint' => $this->keys->fingerprint(),
'confirmation' => $this->keys->recoveryKitConfirmation(), 'everConfirmed' => $this->keys->isInitialized() && $this->keys->everConfirmed(),
'slots' => $this->keys->isInitialized() ? $this->keys->slots() : [], 'maxSlots' => \OCA\NgBackup\Service\KeyService::MAX_SLOTS,
'deleteDelayDays' => $this->keys->isInitialized() ? $this->keys->deleteDelayDays() : \OCA\NgBackup\Service\KeyService::DEFAULT_DELETE_DELAY],
'statement' => KeyConfirm::STATEMENT,
'confirmationPhrase' => KeyConfirm::CONFIRMATION,
'targets' => $targets,
'runs' => $runs,
'schedule' => $this->appConfig->getValueString(Application::APP_ID, 'schedule_time', ''),
]);
}
#[PasswordConfirmationRequired]
public function initKey(string $passphrase, int $deleteDelayDays = \OCA\NgBackup\Service\KeyService::DEFAULT_DELETE_DELAY, string $label = 'Slot 1'): JSONResponse {
try {
$this->keys->initialize($passphrase, $deleteDelayDays, $label);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
return new JSONResponse(['fingerprint' => $this->keys->fingerprint()]);
}
/**
* Plain download link (no CSRF token on a navigation), therefore guarded by a recent password
* confirmation instead, logged to the audit log and announced to all administrators. The kit
* only holds the passphrase-wrapped key: useless without the passphrase.
*/
#[NoCSRFRequired]
#[PasswordConfirmationRequired]
public function downloadKit(): DataDownloadResponse|JSONResponse {
if (!$this->keys->isInitialized()) {
return new JSONResponse(['error' => 'No backup key yet'], Http::STATUS_BAD_REQUEST);
}
$this->alerts->securityEvent('kit_downloaded');
$json = json_encode($this->keys->recoveryKit(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR);
return new DataDownloadResponse($json, 'ng_backup-recovery-kit-' . $this->keys->fingerprint() . '.json', 'application/json');
}
/** The admin must tick the statement and send the exact confirmation phrase. */
public function confirmKit(bool $accepted, string $phrase): JSONResponse {
if (!$accepted || $phrase !== KeyConfirm::CONFIRMATION) {
return new JSONResponse(['error' => 'Not confirmed'], Http::STATUS_BAD_REQUEST);
}
$this->keys->confirmRecoveryKit($this->session->getUser()?->getUID() ?? 'unknown');
return new JSONResponse(['confirmation' => $this->keys->recoveryKitConfirmation()]);
}
#[PasswordConfirmationRequired]
public function addSlot(string $passphrase, string $label): JSONResponse {
try {
return new JSONResponse(['slot' => $this->slots->add($passphrase, $label)]);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
}
#[PasswordConfirmationRequired]
public function replaceSlot(int $slot, string $passphrase, ?string $label = null): JSONResponse {
try {
$this->slots->replace($slot, $passphrase, $label);
return new JSONResponse([]);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
}
#[PasswordConfirmationRequired]
public function removeSlot(int $slot): JSONResponse {
try {
$this->slots->remove($slot);
return new JSONResponse([]);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
}
public function trash(int $targetId): JSONResponse {
try {
$delay = $this->keys->deleteDelayDays() * 86400;
$out = [];
foreach ($this->targets->repository($this->targets->get((string)$targetId))->trash() as $id => $info) {
$out[] = ['id' => $id, 'label' => $info['label'], 'time' => $info['time'], 'removedAt' => $info['forgottenAt'],
'by' => $info['by'], 'deleteAfter' => $info['forgottenAt'] + $delay];
}
return new JSONResponse($out);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
}
#[PasswordConfirmationRequired]
public function untrash(int $targetId, string $snapshotId): JSONResponse {
try {
$this->prune->untrash($this->targets->get((string)$targetId), $snapshotId);
return new JSONResponse([]);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
}
public function backends(): JSONResponse {
return new JSONResponse($this->targets->availableBackends());
}
public function addTarget(string $name, string $backend, string $auth, array $options = [], string $path = 'ng_backup'): JSONResponse {
try {
$r = $this->targets->add($name, $backend, $auth, $options, $path);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
return new JSONResponse(['id' => $r['target']->getId(), 'created' => $r['created']]);
}
#[PasswordConfirmationRequired]
public function removeTarget(int $id): JSONResponse {
$target = $this->targets->get((string)$id);
$this->targets->remove($target);
$this->alerts->securityEvent('target_removed', ['target' => $target->getName()]);
return new JSONResponse([]);
}
public function testTarget(int $id): JSONResponse {
try {
$repo = $this->targets->repository($this->targets->get((string)$id));
return new JSONResponse(['ok' => true, 'snapshots' => count($repo->listSnapshots())]);
} catch (\Throwable $e) {
return new JSONResponse(['ok' => false, 'error' => $e->getMessage()]);
}
}
public function startBackup(int $targetId, string $label = ''): JSONResponse {
try {
$run = $this->backups->start($this->targets->get((string)$targetId), $label);
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
return new JSONResponse($this->runJson($run));
}
public function setSchedule(string $time): JSONResponse {
if ($time !== '' && !preg_match('/^([01]\d|2[0-3]):[0-5]\d$/', $time)) {
return new JSONResponse(['error' => 'Use HH:MM or empty'], Http::STATUS_BAD_REQUEST);
}
$this->appConfig->setValueString(Application::APP_ID, 'schedule_time', $time);
return new JSONResponse(['schedule' => $time]);
}
public function snapshots(int $targetId): JSONResponse {
$out = [];
foreach ($this->snapshots->findForTarget($targetId) as $s) {
$out[] = ['id' => $s->getSnapshotId(), 'kind' => $s->getKind(), 'label' => $s->getLabel(), 'createdAt' => $s->getCreatedAt(),
'files' => $s->getFiles(), 'bytes' => $s->getBytes()];
}
return new JSONResponse($out);
}
public function browse(int $targetId, string $snapshotId, string $path = ''): JSONResponse {
try {
return new JSONResponse($this->restore->browse($this->targets->get((string)$targetId), $snapshotId, $path));
} catch (\Throwable $e) {
return new JSONResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
}
}
/** Queue a restore of user files; it runs as a background job and shows up in the runs. */
#[PasswordConfirmationRequired]
public function startRestore(int $targetId, string $snapshotId, string $path, string $mode = RestoreService::MODE_NEW_FOLDER): JSONResponse {
if (!in_array($mode, [RestoreService::MODE_NEW_FOLDER, RestoreService::MODE_MERGE, RestoreService::MODE_REPLACE], true)
|| !preg_match('#^data/[^/]+/files(/.*)?$#', $path)) {
return new JSONResponse(['error' => 'Invalid path or mode'], Http::STATUS_BAD_REQUEST);
}
$run = new Run();
$run->setTargetId($targetId);
$run->setKind('restore');
$run->setStatus(Run::RUNNING);
$run->setPhase('queued');
$run->setState(json_encode(['snapshot' => $snapshotId, 'path' => $path, 'mode' => $mode,
'by' => $this->session->getUser()?->getUID()], JSON_THROW_ON_ERROR));
$run->setSnapshotId($snapshotId);
$run->setStartedAt(time());
$run->setUpdatedAt(time());
$run = $this->runs->insert($run);
$this->jobs->add(RestoreJob::class, ['run' => $run->getId()]);
return new JSONResponse($this->runJson($run));
}
private function runJson(Run $r): array {
return ['id' => $r->getId(), 'targetId' => $r->getTargetId(), 'kind' => $r->getKind(), 'status' => $r->getStatus(),
'phase' => $r->getPhase(), 'snapshotId' => $r->getSnapshotId(), 'startedAt' => $r->getStartedAt(),
'updatedAt' => $r->getUpdatedAt(), 'finishedAt' => $r->getFinishedAt(), 'error' => $r->getError(),
'stats' => json_decode($r->getStats() ?? 'null', true)];
}
}