Files
TREK/server/src/nest/backup/backup.impl.ts
T
Maurice 83d591dc6c fix(db): keep SQLite temp files in memory so trips can be deleted (#2518)
Deleting a trip failed with SQLITE_IOERR_GETTEMPPATH when the container
runs with a read-only root filesystem and no tmpfs on /tmp. The cascade
behind DELETE FROM trips keeps a statement journal, SQLite moves it to a
temp file once it passes 64 KiB, and it looks for a directory for that
file in SQLITE_TMPDIR, TMPDIR, /var/tmp, /usr/tmp, /tmp and the working
directory. None of them is writable there. Installs on the shipped
compose file have a tmpfs on /tmp and never hit it.

Every connection the server opens now comes from openDatabase() in
src/db/connection.ts, which sets temp_store = MEMORY: the main database
(also when it is reopened after a restore), each plugin's own database
and the uploaded backup checked before a restore. reset-admin.js and the
key rotation script cannot import src/ in the image, so they set the
pragma themselves. A test pins that nothing else in src/ constructs a
handle, and one deletes a full trip on the real schema and watches for
temp files.
2026-09-26 10:36:02 +02:00

586 lines
28 KiB
TypeScript

import archiver from 'archiver';
import unzipper from 'unzipper';
import path from 'path';
import { pipeline } from 'node:stream/promises';
import { readEnv } from '../../app-config';
import fs from 'fs';
import type Database from 'better-sqlite3';
import { openDatabase } from '../../db/connection';
import { db, closeDb, reinitialize } from '../../db/database';
import { VALID_INTERVALS } from './auto-backup.settings';
import { invalidatePermissionsCache } from '../permissions/permissions-cache';
import { pluginsCodeRoot, pluginsDataRoot } from '../plugins/paths';
import { stageExtractedPluginTrees, applyStagedRestoreNow } from '../plugins/plugin-backup';
import { snapshotAllPluginDataDbs } from '../plugins/host/plugin-data.service';
import type { Response } from 'express';
import type { StorageService } from '../storage/storage.service';
import { StorageInvalidKeyError } from '../storage/storage.types';
// ---------------------------------------------------------------------------
// Paths
// ---------------------------------------------------------------------------
const dataDir = path.join(__dirname, '../../../data');
// Compressed upload cap for restore archives. Defaults to 500 MB, raisable via
// BACKUP_UPLOAD_LIMIT_MB for instances whose backups (uploads/ included) grow
// past that. Malformed values abort boot (app-config fail-fast validation);
// frozen at import on purpose (legacy timing).
const backupEnv = readEnv().backup;
export const MAX_BACKUP_UPLOAD_SIZE = backupEnv.uploadLimitMb * 1024 * 1024; // compressed
// Upper bound on the TOTAL decompressed size of a restore archive (the upload
// limit only caps the compressed bytes). Default 5 GB, raisable via
// BACKUP_MAX_DECOMPRESSED_MB for an instance whose own backups (now including the
// plugin trees) legitimately grow past it — otherwise its own backups become
// unrestorable.
export const MAX_BACKUP_DECOMPRESSED_SIZE = backupEnv.maxDecompressedMb * 1024 * 1024;
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
export function formatSize(bytes: number): string {
if (bytes < 1024) return `${bytes} B`;
if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
return `${(bytes / 1024 / 1024).toFixed(1)} MB`;
}
export function parseIntField(raw: unknown, fallback: number): number {
if (typeof raw === 'number' && Number.isFinite(raw)) return Math.floor(raw);
if (typeof raw === 'string' && raw.trim() !== '') {
const n = Number.parseInt(raw, 10);
if (Number.isFinite(n)) return n;
}
return fallback;
}
export function parseAutoBackupBody(body: Record<string, unknown>): {
enabled: boolean;
interval: string;
keep_days: number;
hour: number;
day_of_week: number;
day_of_month: number;
} {
const enabled = body.enabled === true || body.enabled === 'true' || body.enabled === 1;
const rawInterval = body.interval;
const interval =
typeof rawInterval === 'string' && VALID_INTERVALS.includes(rawInterval)
? rawInterval
: 'daily';
const keep_days = Math.max(0, parseIntField(body.keep_days, 7));
const hour = Math.min(23, Math.max(0, parseIntField(body.hour, 2)));
const day_of_week = Math.min(6, Math.max(0, parseIntField(body.day_of_week, 0)));
const day_of_month = Math.min(28, Math.max(1, parseIntField(body.day_of_month, 1)));
return { enabled, interval, keep_days, hour, day_of_week, day_of_month };
}
export function isValidBackupFilename(filename: string): boolean {
return /^(?:auto-)?backup-[\w-]+\.zip$/.test(filename);
}
export function backupFileExists(storage: StorageService, filename: string): Promise<boolean> {
return storage.exists('backups', filename);
}
/**
* The codebase's only res.download becomes the storage equivalent: root-relative
* sendFile via sendToResponse, with res.download's attachment header rebuilt by
* hand (filenames are regex-gated ASCII — no encoding cases).
*/
export function sendBackupToResponse(storage: StorageService, filename: string, res: Response): Promise<void> {
return storage.sendToResponse('backups', filename, res, {
disposition: `attachment; filename="${filename}"`,
});
}
// ---------------------------------------------------------------------------
// Rate limiter state (shared across requests)
// ---------------------------------------------------------------------------
export const BACKUP_RATE_WINDOW = 60 * 60 * 1000; // 1 hour
const backupAttempts = new Map<string, { count: number; first: number }>();
/** Returns true if the request is allowed, false if rate-limited. */
export function checkRateLimit(key: string, maxAttempts: number, windowMs: number): boolean {
const now = Date.now();
const record = backupAttempts.get(key);
if (record && record.count >= maxAttempts && now - record.first < windowMs) {
return false;
}
if (!record || now - record.first >= windowMs) {
backupAttempts.set(key, { count: 1, first: now });
} else {
record.count++;
}
return true;
}
// ---------------------------------------------------------------------------
// List backups
// ---------------------------------------------------------------------------
export interface BackupInfo {
filename: string;
size: number;
sizeText: string;
created_at: string;
}
export async function listBackups(storage: StorageService): Promise<BackupInfo[]> {
const backups: BackupInfo[] = [];
for await (const obj of storage.list('backups')) {
// storage.list() recurses; the legacy readdir was single-level. Nested keys
// (a restore-* staging tree when data and uploads map to the same dir) and
// non-zip files must not surface.
if (obj.key.includes('/') || !obj.key.endsWith('.zip')) continue;
backups.push({
filename: obj.key,
size: obj.size,
sizeText: formatSize(obj.size),
created_at: new Date(obj.mtimeMs).toISOString(),
});
}
return backups.sort((a, b) => new Date(b.created_at).getTime() - new Date(a.created_at).getTime());
}
// ---------------------------------------------------------------------------
// Create backup
// ---------------------------------------------------------------------------
/** The categories a backup archives — everything else under uploads/ is a
* re-derivable cache (photos-google, photos-trek) or not uploads at all
* (backups). Restore's rehydration walks the same list. */
export const BACKUP_UPLOAD_CATEGORIES = ['files', 'journey', 'covers', 'avatars', 'places', 'photos'] as const;
/**
* Writes a full backup zip and returns its BackupInfo.
*
* `prefix` picks the filename scheme. AutoBackupJob passes 'auto-backup' because
* everything downstream tells the two apart by name: cleanupOldBackups() prunes
* only auto-backup-*.zip, and the admin panel badges them as automatic. Manual
* backups keep the default.
*/
export async function createBackup(storage: StorageService, prefix: 'backup' | 'auto-backup' = 'backup'): Promise<BackupInfo> {
const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
const filename = `${prefix}-${timestamp}.zip`;
// All staging lives in the backups backend's own spool: same volume as the
// destination (the put commit stays an atomic rename) and crash leftovers are
// reaped by LocalDriver's boot spool-cleanup. The scratch names carry the
// prefix too: a scheduled run and a manual one that start in the same second
// would otherwise share a snapshot path, and the first to finish would delete
// the other's staging copy mid-archive.
const spoolDir = storage.spoolDirFor('backups');
const zipSpool = path.join(spoolDir, `zip-build-${prefix}-${timestamp}`);
const pdataSnap = path.join(spoolDir, `plugins-snap-${prefix}-${timestamp}`);
const dbSnap = path.join(spoolDir, `travel-snap-${prefix}-${timestamp}.db`);
// Per-backup staging for uploads with no local path (a remote/S3 primary, or
// a local path that vanished between listing and archiving — see
// getLocalPathOrNull). Same spool as the rest of the build, same cleanup.
const stagingDir = path.join(spoolDir, `staging-${prefix}-${timestamp}`);
try {
try { db.exec('PRAGMA wal_checkpoint(TRUNCATE)'); } catch (e) {}
// Enumerate the archived categories up front (the archiver reads entries
// lazily during finalize(), so the promise executor below must stay
// synchronous). Everything NOT in BACKUP_UPLOAD_CATEGORIES is excluded by
// construction: the re-derivable caches (photos-google in both
// TREK_PLACE_PHOTO_DIR modes, photos-trek) and backups itself are never
// enumerated, which is what makes the same-dir-misconfig guard (#1358)
// structural instead of pattern-based.
const uploadEntries: { absPath: string; name: string }[] = [];
for (const category of BACKUP_UPLOAD_CATEGORIES) {
for await (const obj of storage.list(category)) {
// In mode A the google/trek caches nest under the photos/ prefix — the
// category walk would sweep them back in without this skip.
if (category === 'photos' && (obj.key.startsWith('google/') || obj.key.startsWith('trek/'))) continue;
// Local path available (exists on disk right now — the fail-safe half
// of getLocalPathOrNull's contract) → push it directly: zero-copy, the
// default-install path. Otherwise (a remote/S3 primary, or a local
// path that vanished between the list() and here) stream the object
// into this backup's own staging dir so archiver has a real file to
// read lazily during finalize() — the temp file withLocalFile would
// have produced is gone by the time archiver gets to it.
const localPath = await storage.getLocalPathOrNull(category, obj.key);
if (localPath !== null) {
uploadEntries.push({ absPath: localPath, name: `uploads/${category}/${obj.key}` });
continue;
}
const stagedPath = path.join(stagingDir, category, obj.key);
fs.mkdirSync(path.dirname(stagedPath), { recursive: true });
const { stream } = await storage.getStream(category, obj.key);
await pipeline(stream, fs.createWriteStream(stagedPath));
uploadEntries.push({ absPath: stagedPath, name: `uploads/${category}/${obj.key}` });
}
}
await new Promise<void>((resolve, reject) => {
const output = fs.createWriteStream(zipSpool);
const archive = archiver('zip', { zlib: { level: 9 } });
output.on('close', resolve);
archive.on('error', reject);
// archiver emits 'warning' (not 'error') for entries it couldn't
// stat/read — a stale staged path, a permission error — and by default
// just skips them, silently dropping bytes from the backup. Fail the
// backup instead: a dropped entry must never pass as a success.
archive.on('warning', reject);
archive.pipe(output);
const dbPath = path.join(dataDir, 'travel.db');
if (fs.existsSync(dbPath)) {
// Archive a point-in-time snapshot, not the live file. The archiver reads entries
// lazily during finalize(), so a WAL auto-checkpoint writing pages back into
// travel.db mid-stream would tear the archived copy — and the -wal that would make
// it recoverable isn't in the zip. VACUUM INTO takes a consistent snapshot even
// under concurrent writes — the same guarantee the plugin DBs get below.
let dbToArchive = dbPath;
try {
if (fs.existsSync(dbSnap)) fs.rmSync(dbSnap, { force: true });
db.exec(`VACUUM INTO '${dbSnap.replaceAll("'", "''")}'`);
dbToArchive = dbSnap;
} catch (e) {
// Snapshot failed (disk/lock) — fall back to the checkpointed live file rather
// than drop the core DB from the backup entirely.
}
archive.file(dbToArchive, { name: 'travel.db' });
}
// Bundle the at-rest encryption key so the backup is self-contained: the
// DB stores secrets (API keys, MFA, SMTP/OIDC) encrypted with this key, so
// a restore onto a different install would otherwise be unable to decrypt
// them. NOTE: this makes the backup file as sensitive as the key itself —
// store/transfer it securely. Skipped when ENCRYPTION_KEY is provided via
// env, since in that case the file is not the source of truth.
const encKeyPath = path.join(dataDir, '.encryption_key');
if (!readEnv().backup.encryptionKeyFromEnv && fs.existsSync(encKeyPath)) {
archive.file(encKeyPath, { name: '.encryption_key' });
}
for (const entry of uploadEntries) archive.file(entry.absPath, { name: entry.name });
// Plugin data — each plugin's own SQLite file and any blobs. This is the ONLY
// copy of the user data a plugin holds, so it belongs in the backup. Checkpoint
// every open handle first (the host keeps them open in WAL mode) so the archived
// .db files are complete snapshots and not missing recent commits stranded in a
// -wal sidecar — the same treatment travel.db gets above.
const pdata = pluginsDataRoot();
if (fs.existsSync(pdata)) {
// Archive a consistent point-in-time snapshot, not the live files: the archiver
// reads lazily while streaming, so a plugin writing during the backup (an auto-
// checkpoint landing mid-read) would otherwise put a torn .db + out-of-sync -wal
// into the zip — the plugin's ONLY data copy, silently corrupt. This VACUUM-INTOs
// each open db and drops the sidecars; the snap dir is removed in the finally.
snapshotAllPluginDataDbs(pdataSnap);
archive.directory(pdataSnap, 'plugins-data');
}
// Plugin code — so a restore is self-contained (the `plugins` rows reference it).
// Dev-links (a plugin dir symlinked/junctioned to an author's source) are skipped
// by realpath: we never bundle a linked source tree from outside the code root.
const pcode = pluginsCodeRoot();
if (fs.existsSync(pcode)) {
const realRoot = fs.realpathSync(pcode);
for (const entry of fs.readdirSync(pcode)) {
const dir = path.join(pcode, entry);
let real: string;
try { real = fs.realpathSync(dir); } catch { continue; }
if (!real.startsWith(realRoot + path.sep)) continue; // dev-link points outside → skip
try { if (!fs.statSync(dir).isDirectory()) continue; } catch { continue; }
archive.directory(dir, `plugins-code/${entry}`);
}
}
archive.finalize();
});
// The commit — and, under a mirror backend, the replica fan-out point.
await storage.put('backups', filename, { tmpPath: zipSpool });
const stat = await storage.stat('backups', filename);
if (!stat) throw new Error(`Backup vanished after commit: ${filename}`);
return {
filename,
size: stat.size,
sizeText: formatSize(stat.size),
created_at: new Date(stat.mtimeMs).toISOString(),
};
} catch (err: unknown) {
console.error('Backup error:', err);
throw err;
} finally {
// put commits by rename, so on success the zip spool file is already gone;
// on failure these clean the half-built staging. The destination needs no
// unlink anymore — nothing lands there until put succeeds. (The await on
// the build promise resolves on the output stream's 'close', so the
// snapshots are no longer being read.)
fs.rmSync(zipSpool, { force: true });
fs.rmSync(pdataSnap, { recursive: true, force: true });
fs.rmSync(dbSnap, { force: true });
fs.rmSync(stagingDir, { recursive: true, force: true });
}
}
// ---------------------------------------------------------------------------
// Restore from ZIP
// ---------------------------------------------------------------------------
export interface RestoreResult {
success: boolean;
error?: string;
status?: number;
}
/** Restore a zip that already sits in the backups store, reading it through
* the storage facade (primary-local in v1; a remote backend downloads to
* tempDir via withLocalFile — the seam is in place, resumability is not). */
export function restoreBackup(storage: StorageService, filename: string): Promise<RestoreResult> {
return storage.withLocalFile('backups', filename, (zipPath) => restoreFromZip(storage, zipPath));
}
const isBackupCategory = (dir: string): dir is (typeof BACKUP_UPLOAD_CATEGORIES)[number] =>
(BACKUP_UPLOAD_CATEGORIES as readonly string[]).includes(dir);
/**
* Per-entry storage.put replaces the old wipe-and-cpSync (and with it the
* realpathSync symlinked-uploads workaround — the driver resolves its own
* root at init). Entries that cannot map to a storage key — an unknown
* top-level dir, or dot-segments from old `dot: true` archives — are skipped
* with a warning (2026-08-17 decision): new archives never contain them, and
* the category mapping stays structural in both directions.
*/
async function rehydrateUploads(storage: StorageService, extractedUploads: string): Promise<void> {
const walk = (dir: string): string[] =>
fs.readdirSync(dir, { withFileTypes: true }).flatMap((e) => {
const p = path.join(dir, e.name);
return e.isDirectory() ? walk(p) : e.isFile() ? [p] : [];
});
for (const absPath of walk(extractedUploads)) {
const rel = path.relative(extractedUploads, absPath).split(path.sep).join('/');
const slash = rel.indexOf('/');
const top = slash === -1 ? '' : rel.slice(0, slash);
if (slash === -1 || !isBackupCategory(top)) {
console.warn(`Restore: skipping upload entry outside a storage category: ${rel}`);
continue;
}
try {
await storage.put(top, rel.slice(slash + 1), { tmpPath: absPath });
} catch (err) {
if (err instanceof StorageInvalidKeyError) {
console.warn(`Restore: skipping upload entry with an invalid key: ${rel}`);
continue;
}
throw err;
}
}
}
export async function restoreFromZip(storage: StorageService, zipPath: string): Promise<RestoreResult> {
const extractDir = path.join(dataDir, `restore-${Date.now()}`);
let reinitFailed: unknown = null;
try {
// Fast reject on the central-directory's declared size, then extract entry-by-entry
// enforcing the ACTUAL decompressed bytes. The declared uncompressedSize is
// attacker-declarable — a zip bomb can under-report it and expand past the cap during
// extraction — so the real guard counts bytes as they are written and aborts once the
// running total crosses the cap. Each entry's resolved path is also confined to
// extractDir (a `../` entry that escaped the root — zip-slip — is refused).
const directory = await unzipper.Open.file(zipPath);
const claimedSize = directory.files.reduce((sum, f) => sum + (f.uncompressedSize || 0), 0);
if (claimedSize > MAX_BACKUP_DECOMPRESSED_SIZE) {
return { success: false, error: 'Backup exceeds the maximum decompressed size.', status: 400 };
}
fs.mkdirSync(extractDir, { recursive: true });
let decompressedBytes = 0;
for (const entry of directory.files) {
if (entry.type === 'Directory') continue;
const dest = path.join(extractDir, entry.path);
const rel = path.relative(extractDir, dest);
if (rel.startsWith('..') || path.isAbsolute(rel)) {
fs.rmSync(extractDir, { recursive: true, force: true });
return { success: false, error: 'Invalid backup: an entry path escapes the archive root.', status: 400 };
}
fs.mkdirSync(path.dirname(dest), { recursive: true });
try {
await new Promise<void>((resolve, reject) => {
const source = entry.stream();
const out = fs.createWriteStream(dest);
source.on('data', (chunk: Buffer) => {
decompressedBytes += chunk.length;
if (decompressedBytes > MAX_BACKUP_DECOMPRESSED_SIZE) {
source.destroy();
out.destroy();
reject(new Error('DECOMPRESSED_CAP_EXCEEDED'));
}
});
source.on('error', reject);
out.on('error', reject);
out.on('finish', resolve);
source.pipe(out);
});
} catch (err) {
fs.rmSync(extractDir, { recursive: true, force: true });
if (err instanceof Error && err.message === 'DECOMPRESSED_CAP_EXCEEDED') {
return { success: false, error: 'Backup exceeds the maximum decompressed size.', status: 400 };
}
throw err;
}
}
const extractedDb = path.join(extractDir, 'travel.db');
if (!fs.existsSync(extractedDb)) {
fs.rmSync(extractDir, { recursive: true, force: true });
return { success: false, error: 'Invalid backup: travel.db not found', status: 400 };
}
let uploadedDb: InstanceType<typeof Database> | null = null;
try {
uploadedDb = openDatabase(extractedDb, { readonly: true });
const integrityResult = uploadedDb.prepare('PRAGMA integrity_check').get() as { integrity_check: string };
if (integrityResult.integrity_check !== 'ok') {
fs.rmSync(extractDir, { recursive: true, force: true });
return { success: false, error: `Uploaded database failed integrity check: ${integrityResult.integrity_check}`, status: 400 };
}
const requiredTables = ['users', 'trips', 'trip_members', 'places', 'days'];
const existingTables = uploadedDb
.prepare("SELECT name FROM sqlite_master WHERE type='table'")
.all() as { name: string }[];
const tableNames = new Set(existingTables.map(t => t.name));
for (const table of requiredTables) {
if (!tableNames.has(table)) {
fs.rmSync(extractDir, { recursive: true, force: true });
return { success: false, error: `Uploaded database is missing required table: ${table}. This does not appear to be a TREK backup.`, status: 400 };
}
}
} catch (err) {
fs.rmSync(extractDir, { recursive: true, force: true });
return { success: false, error: 'Uploaded file is not a valid SQLite database', status: 400 };
} finally {
uploadedDb?.close();
}
closeDb();
try {
const dbDest = path.join(dataDir, 'travel.db');
// Swap the core DB atomically: copy the restored DB to a temp file on the SAME
// filesystem, drop the old -wal/-shm sidecars (they belong to the DB being replaced
// and would corrupt the new one if left), then rename into place. A rename is atomic,
// so a crash mid-swap leaves either the old or the new travel.db intact — never the
// deleted-and-not-yet-copied gap that a plain unlink-then-copy could leave.
const dbTmp = dbDest + '.restore-tmp';
fs.copyFileSync(extractedDb, dbTmp);
for (const ext of ['-wal', '-shm']) {
try { fs.unlinkSync(dbDest + ext); } catch (e) {}
}
fs.renameSync(dbTmp, dbDest);
// Restore the bundled at-rest encryption key (if the archive carries one)
// so the restored DB's encrypted secrets can be decrypted. Only the file
// is swapped here; the in-memory key was read at startup, so a restart is
// required for it to take effect (and an explicit ENCRYPTION_KEY env var
// still overrides the file).
const extractedEncKey = path.join(extractDir, '.encryption_key');
if (fs.existsSync(extractedEncKey)) {
fs.copyFileSync(extractedEncKey, path.join(dataDir, '.encryption_key'));
}
} finally {
// Reopening the DB must always run (even if the copy above threw) so the
// process is never left without a connection. Capture a reopen failure
// instead of letting it propagate as a generic error — a backup whose
// files already landed on disk but whose connection failed to reopen
// needs to be reported as "restart required", not swallowed.
try {
reinitialize();
} catch (reinitErr) {
reinitFailed = reinitErr;
}
// The restored DB has different permission-override rows from
// the pre-restore DB, but our process-local permissions cache
// still holds the pre-restore state. Any request using a cached
// permission would decide against the wrong grants until the
// next restart. Dropping the cache forces a fresh read.
invalidatePermissionsCache();
}
if (!reinitFailed) {
// The registry reads storage.* app_settings through the DB handle that
// was just closed and reopened above — reload it now, AFTER reinitialize()
// and BEFORE any byte moves, so rehydrated uploads land where the RESTORED
// config says rather than the stale pre-restore one (audit #4). Skipped
// entirely when reopen failed: with no live DB handle the registry has
// nothing to read, and the restore is already reported as "restart
// required" below — rehydrating into a stale/guessed config would be worse.
storage.reloadConfig();
const extractedUploads = path.join(extractDir, 'uploads');
if (fs.existsSync(extractedUploads)) {
// Parity with the legacy wipe: it unlinked one level deep only (nested
// files — journey/thumbs, photos/google — survived until overwritten by
// the copy) and swallowed per-file errors.
for (const category of BACKUP_UPLOAD_CATEGORIES) {
for await (const obj of storage.list(category)) {
if (obj.key.includes('/')) continue;
await storage.delete(category, obj.key).catch(() => { /* best-effort, as the old unlink loop was */ });
}
}
await rehydrateUploads(storage, extractedUploads);
}
}
// Plugin trees can't be swapped while the runtime holds their DBs open, so stage
// them beside the live trees, then ask the runtime to quiesce its plugins and apply
// the swap NOW. If the runtime isn't up (plugins disabled / restore during boot),
// the staging waits for the boot reconcile — with nothing running, no data diverges.
// Best-effort: a staging error must not fail an otherwise-good core restore. Runs
// UNCONDITIONALLY, even when reinitFailed — unlike reload/rehydration this is pure
// filesystem staging with no DB dependency (plugin-backup.ts), so a failed reopen
// must not cost the archive's plugin data: extractDir is unlinked right below, and
// an un-staged tree there would be gone for good with no recovery path.
try {
stageExtractedPluginTrees(extractDir);
// Quiesce regardless of whether trees were staged: the restored travel.db carries
// a different `plugins` table, so any plugin still running with its pre-restore
// identity/grants is now a ghost — invisible in the restored UI, unstoppable short
// of a process restart. applyStagedRestoreNow closes those handles; the tree swap
// it also performs is a no-op when nothing was staged (e.g. an older archive). It
// degrades gracefully when the DB isn't reopened, same as any other best-effort
// failure here.
await applyStagedRestoreNow();
} catch (e) {
console.error('Restore: staging plugin trees failed:', e);
}
fs.rmSync(extractDir, { recursive: true, force: true });
if (reinitFailed) {
console.error('Restore: database reopen failed after file swap:', reinitFailed);
return { success: false, error: 'Backup files were restored but the database connection could not be reopened. Restart the server to finish the restore.', status: 500 };
}
return { success: true };
} catch (err: unknown) {
console.error('Restore error:', err);
if (fs.existsSync(extractDir)) fs.rmSync(extractDir, { recursive: true, force: true });
// Belt-and-braces: the inner `finally` already drops the permissions
// cache after a successful swap, but if the extraction/copy step
// itself threw before the DB swap even started, the cache wasn't
// stale anyway. Invalidating here too costs nothing and guarantees
// we never serve cached permissions that don't match the DB state
// we leave the process in after a failed restore.
try { invalidatePermissionsCache(); } catch { /* best-effort */ }
throw err;
}
}
// ---------------------------------------------------------------------------
// Delete backup
// ---------------------------------------------------------------------------
export function deleteBackup(storage: StorageService, filename: string): Promise<void> {
return storage.delete('backups', filename);
}