Files
files/expressjs/src/server.js
2026-01-12 21:21:56 +01:00

1666 lines
58 KiB
JavaScript

const crypto = require('crypto');
const fs = require('fs');
const os = require('os');
const path = require('path');
const bcrypt = require('bcryptjs');
const cookieParser = require('cookie-parser');
const dotenv = require('dotenv');
const express = require('express');
const jwt = require('jsonwebtoken');
const multer = require('multer');
const sqlite3 = require('sqlite3').verbose();
dotenv.config({ path: path.join(__dirname, '..', '..', '.env') });
const basePath = (process.env.BASE_PATH || '/manage').replace(/\/+$/, '') || '/manage';
const port = parseInt(process.env.PORT || '3000', 10);
const dataDir = process.env.DATA_DIR || path.join(__dirname, '..', 'data');
const dbPath = process.env.DB_PATH || path.join(__dirname, '..', 'data', 'uploads.sqlite');
const adminHash = process.env.MANAGEMENT_ADMIN_HASH || '';
const uploadTtlSeconds = parseInt(process.env.UPLOAD_TTL_SECONDS || '604800', 10);
const maxRetentionSeconds = 90 * 24 * 60 * 60;
const maxUploadBytes = parseInt(process.env.UPLOAD_MAX_BYTES || '0', 10);
const shareDir = path.join(dataDir, '_share');
const jwtSecret = crypto.randomBytes(32).toString('hex');
const jwtMaxAgeMs = 2 * 60 * 60 * 1000;
fs.mkdirSync(shareDir, { recursive: true });
const tempDir = path.join(os.tmpdir(), 'uploads');
fs.mkdirSync(tempDir, { recursive: true });
const upload = multer({
dest: tempDir,
limits: maxUploadBytes > 0 ? { fileSize: maxUploadBytes } : undefined,
});
const app = express();
const trustProxy = process.env.TRUST_PROXY === 'true';
app.set('trust proxy', trustProxy);
app.use(cookieParser());
app.use(express.urlencoded({ extended: true }));
app.use(express.json());
app.use((req, res, next) => {
res.setHeader('X-Content-Type-Options', 'nosniff');
next();
});
const db = new sqlite3.Database(dbPath);
db.serialize(() => {
db.run(`CREATE TABLE IF NOT EXISTS uploads (
id INTEGER PRIMARY KEY AUTOINCREMENT,
owner TEXT NOT NULL,
original_name TEXT NOT NULL,
stored_name TEXT NOT NULL,
stored_path TEXT NOT NULL,
size_bytes INTEGER NOT NULL,
uploaded_at INTEGER NOT NULL,
expires_at INTEGER NOT NULL
)`);
db.run('CREATE INDEX IF NOT EXISTS uploads_owner_idx ON uploads(owner)');
db.run('CREATE INDEX IF NOT EXISTS uploads_expires_idx ON uploads(expires_at)');
db.run(`CREATE TABLE IF NOT EXISTS admin_logs (
id INTEGER PRIMARY KEY AUTOINCREMENT,
event TEXT NOT NULL,
owner TEXT,
detail TEXT,
created_at INTEGER NOT NULL
)`);
db.run('CREATE INDEX IF NOT EXISTS admin_logs_event_idx ON admin_logs(event)');
db.run('CREATE INDEX IF NOT EXISTS admin_logs_created_idx ON admin_logs(created_at)');
db.run(`CREATE TABLE IF NOT EXISTS users (
username TEXT PRIMARY KEY,
password_hash TEXT NOT NULL,
created_at INTEGER NOT NULL
)`);
});
function run(sql, params = []) {
return new Promise((resolve, reject) => {
db.run(sql, params, function (err) {
if (err) {
reject(err);
return;
}
resolve(this);
});
});
}
function get(sql, params = []) {
return new Promise((resolve, reject) => {
db.get(sql, params, (err, row) => {
if (err) {
reject(err);
return;
}
resolve(row);
});
});
}
function all(sql, params = []) {
return new Promise((resolve, reject) => {
db.all(sql, params, (err, rows) => {
if (err) {
reject(err);
return;
}
resolve(rows);
});
});
}
function logEvent(event, owner, detail) {
const payload = typeof detail === 'string' ? detail : JSON.stringify(detail || {});
return run(
'INSERT INTO admin_logs (event, owner, detail, created_at) VALUES (?, ?, ?, ?)',
[event, owner || null, payload, Date.now()]
).catch(() => undefined);
}
const csrfCookieName = 'csrf';
const csrfCookieOptions = {
httpOnly: true,
sameSite: 'strict',
secure: process.env.COOKIE_SECURE === 'true',
};
function escapeHtml(value) {
return String(value)
.replace(/&/g, '&')
.replace(/</g, '&lt;')
.replace(/>/g, '&gt;')
.replace(/"/g, '&quot;')
.replace(/'/g, '&#39;');
}
function csrfField(token) {
return `<input type="hidden" name="csrfToken" value="${escapeHtml(token)}" />`;
}
function ensureCsrfToken(req, res, next) {
let token = req.cookies[csrfCookieName];
if (!token) {
token = crypto.randomBytes(32).toString('hex');
res.cookie(csrfCookieName, token, csrfCookieOptions);
}
res.locals.csrfToken = token;
next();
}
function isSameOrigin(req) {
const origin = req.get('origin');
const referer = req.get('referer');
const header = origin || referer;
if (!header) {
return true;
}
try {
const parsed = new URL(header);
const expected = `${req.protocol}://${req.get('host')}`;
return parsed.origin === expected;
} catch (err) {
return false;
}
}
function csrfGuard(req, res, next) {
if (!isSameOrigin(req)) {
if (req.path.startsWith(`${basePath}/api/`)) {
res.status(403).json({ error: 'Origin check failed' });
return;
}
res.status(403).send(renderPage('Zugriff verweigert', '<p class="card">Origin-Prüfung fehlgeschlagen.</p>'));
return;
}
const token = req.cookies[csrfCookieName];
const provided = req.body?.csrfToken || req.query?.csrfToken || req.get('x-csrf-token');
if (!token || !provided || token !== provided) {
if (req.path.startsWith(`${basePath}/api/`)) {
res.status(403).json({ error: 'CSRF token mismatch' });
return;
}
res.status(403).send(renderPage('Zugriff verweigert', '<p class="card">CSRF-Prüfung fehlgeschlagen.</p>'));
return;
}
next();
}
const loginAttempts = new Map();
const LOGIN_WINDOW_MS = 15 * 60 * 1000;
const LOGIN_MAX_ATTEMPTS = 10;
function loginRateLimit(type) {
return (req, res, next) => {
const ip = req.ip || 'unknown';
const key = `${type}:${ip}`;
const now = Date.now();
const entry = loginAttempts.get(key) || { count: 0, resetAt: now + LOGIN_WINDOW_MS };
if (now > entry.resetAt) {
entry.count = 0;
entry.resetAt = now + LOGIN_WINDOW_MS;
}
entry.count += 1;
loginAttempts.set(key, entry);
if (entry.count > LOGIN_MAX_ATTEMPTS) {
const waitMinutes = Math.ceil((entry.resetAt - now) / 60000);
const body = `<section class="card"><p>Zu viele Anmeldeversuche. Bitte in ${waitMinutes} Minuten erneut versuchen.</p></section>`;
res.status(429).send(renderPage('Zu viele Versuche', body));
return;
}
next();
};
}
function clearLoginAttempts(type, req) {
const ip = req.ip || 'unknown';
loginAttempts.delete(`${type}:${ip}`);
}
async function getUserHash(username) {
const row = await get('SELECT password_hash FROM users WHERE username = ?', [username]);
return row ? row.password_hash : null;
}
function toBase32(buffer) {
const alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
let bits = 0;
let value = 0;
let output = '';
for (const byte of buffer) {
value = (value << 8) | byte;
bits += 8;
while (bits >= 5) {
output += alphabet[(value >>> (bits - 5)) & 31];
bits -= 5;
}
}
if (bits > 0) {
output += alphabet[(value << (5 - bits)) & 31];
}
return output;
}
function createRandomId() {
return toBase32(crypto.randomBytes(5));
}
function sanitizeBaseName(originalName) {
const ext = path.extname(originalName || '');
const base = path.basename(originalName || 'datei', ext);
const cleaned = base
.replace(/\s+/g, '-')
.replace(/[^a-zA-Z0-9_-]/g, '')
.replace(/-+/g, '-')
.replace(/_+/g, '_')
.replace(/^[-_]+|[-_]+$/g, '');
return cleaned || 'datei';
}
function sanitizeExtension(originalName) {
const ext = path.extname(originalName || '').toLowerCase();
if (!ext) {
return '';
}
if (!/^\.[a-z0-9]{1,10}$/.test(ext)) {
return '';
}
return ext;
}
function formatBytes(bytes) {
if (bytes < 1024) {
return `${bytes} B`;
}
const units = ['KB', 'MB', 'GB', 'TB'];
let value = bytes / 1024;
let idx = 0;
while (value >= 1024 && idx < units.length - 1) {
value /= 1024;
idx += 1;
}
return `${value.toFixed(value < 10 ? 1 : 0)} ${units[idx]}`;
}
function formatTimestamp(ts) {
const date = new Date(ts);
return date.toLocaleString();
}
function formatCountdown(ts) {
const delta = Math.max(0, ts - Date.now());
const minutes = Math.floor(delta / 60000);
const hours = Math.floor(minutes / 60);
const days = Math.floor(hours / 24);
if (days > 0) {
return `${days}d ${hours % 24}h`;
}
if (hours > 0) {
return `${hours}h ${minutes % 60}m`;
}
return `${minutes}m`;
}
function renderFileManagerPage(title, body) {
return `<!doctype html>
<html lang="de">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>${title}</title>
<style>
:root { --ink:#0b0f19; --muted:#5b6470; --line:#d8dde4; --bg:#eef1f5; --card:#ffffff; --accent:#0f766e; --accent-strong:#0a5b55; --accent-soft:#e6f4f2; }
* { box-sizing: border-box; }
body { margin: 0; font-family: "IBM Plex Sans", "Noto Sans", sans-serif; background: var(--bg); color: var(--ink); }
main { max-width: 1280px; margin: 0 auto; padding: 26px 18px 70px; }
header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 18px 20px; border-radius: 16px; background: linear-gradient(135deg, #ffffff 0%, #f6fbfa 100%); border: 1px solid var(--line); }
h1 { margin: 0; font-size: 1.75rem; letter-spacing: 0.01em; }
h2 { margin: 0 0 12px; font-size: 1.08rem; }
.muted { color: var(--muted); font-size: 0.95rem; }
.card { margin-top: 18px; padding: 16px; background: var(--card); border-radius: 16px; border: 1px solid var(--line); box-shadow: 0 8px 26px rgba(12, 18, 28, 0.08); }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; background: #f1f5f9; border: 1px solid var(--line); color: var(--ink); text-decoration: none; font-weight: 600; }
.tag.primary { background: var(--accent-soft); border-color: #bfe6e0; color: var(--accent-strong); }
.tag span { color: var(--muted); font-weight: 500; }
.browser-shell { display: grid; gap: 16px; }
.browser-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.crumbs a { color: var(--accent-strong); text-decoration: none; font-weight: 600; }
.crumbs span { color: var(--muted); }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
form { display: grid; gap: 10px; }
label { display: grid; gap: 6px; font-weight: 600; }
input, button, select { font: inherit; padding: 9px 12px; border-radius: 10px; }
input, select { border: 1px solid var(--line); background: #fff; }
button { border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; transition: transform 0.15s ease, background 0.2s ease; }
button:hover { background: var(--accent-strong); }
button.secondary { background: transparent; color: var(--accent); }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:hover { background: #f2f8f7; }
.name { display: inline-flex; align-items: center; gap: 10px; }
.name strong { font-weight: 700; }
.folder { font-weight: 700; color: var(--accent-strong); text-decoration: none; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.actions button { font-size: 0.9rem; padding: 7px 10px; }
dialog { border: none; border-radius: 16px; padding: 0; width: min(520px, 92vw); }
dialog::backdrop { background: rgba(15, 23, 42, 0.4); }
.dialog-card { padding: 18px; display: grid; gap: 12px; }
.dialog-actions { display: flex; gap: 10px; justify-content: flex-end; }
.dialog-actions .secondary { border-color: var(--line); color: var(--accent-strong); }
</style>
</head>
<body>
<main>
${body}
</main>
</body>
</html>`;
}
function renderPage(title, body, mainClass = '') {
return `<!doctype html>
<html lang="de">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>${title}</title>
<style>
:root { --ink:#0f172a; --muted:#6b7280; --line:#e5e7eb; --bg:#f7f7f4; --card:#ffffff; --accent:#111827; }
* { box-sizing: border-box; }
body { margin: 0; font-family: "IBM Plex Sans", "Noto Sans", sans-serif; color: var(--ink); background: var(--bg); }
main { max-width: 920px; margin: 0 auto; padding: 22px 16px 48px; }
main.wide { max-width: 1180px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
h1 { margin: 0; font-size: 1.55rem; }
h2 { margin: 0 0 12px; font-size: 1.08rem; }
.muted { color: var(--muted); font-size: 0.95rem; }
.card { margin-top: 16px; padding: 16px; background: var(--card); border-radius: 12px; border: 1px solid var(--line); }
form { display: grid; gap: 10px; }
label { display: grid; gap: 6px; font-weight: 600; }
input, button { font: inherit; padding: 8px 10px; border-radius: 8px; }
input { border: 1px solid var(--line); background: #fff; }
button { border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; }
button.secondary { background: transparent; color: var(--accent); }
.row { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 6px 4px; border-bottom: 1px solid var(--line); vertical-align: top; }
progress { width: 100%; height: 12px; accent-color: var(--accent); }
.actions { display: grid; gap: 6px; }
.actions input, .actions button { font-size: 0.9rem; padding: 6px 8px; }
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; background: #f1f5f9; }
</style>
</head>
<body>
<main class="${mainClass}">
${body}
</main>
</body>
</html>`;
}
function baseUrl(pathname) {
return `${basePath}${pathname}`;
}
function getUserFromRequest(req) {
const token = req.cookies?.auth;
if (!token) {
return null;
}
try {
const payload = jwt.verify(token, jwtSecret);
if (!payload?.sub) {
return null;
}
return { username: payload.sub, admin: Boolean(payload.admin) };
} catch (err) {
return null;
}
}
function requireAuthPage(req, res, next) {
const user = getUserFromRequest(req);
if (!user) {
res.clearCookie('auth');
res.redirect(baseUrl('/login'));
return;
}
req.user = user;
next();
}
function requireAdminPage(req, res, next) {
const user = getUserFromRequest(req);
if (!user || !user.admin) {
res.clearCookie('auth');
res.redirect(baseUrl('/admin'));
return;
}
req.user = user;
next();
}
function isAllowedAdminPath(relativePath) {
const parts = relativePath.split('/').filter(Boolean);
return !parts.includes('_share');
}
function resolveAdminPath(relativePath) {
const cleaned = relativePath.replace(/\\/g, '/');
if (!isAllowedAdminPath(cleaned)) {
return null;
}
const target = path.resolve(dataDir, cleaned);
if (target === dataDir || target.startsWith(`${dataDir}${path.sep}`)) {
return target;
}
return null;
}
function requireAuthApi(req, res, next) {
const user = getUserFromRequest(req);
if (!user) {
res.clearCookie('auth');
res.status(401).json({ error: 'Unauthorized' });
return;
}
req.user = user;
next();
}
async function cleanupExpired() {
const now = Date.now();
const expired = await all('SELECT id, stored_path FROM uploads WHERE expires_at <= ?', [now]);
let removed = 0;
for (const entry of expired) {
try {
await fs.promises.unlink(entry.stored_path);
} catch (err) {
// File might already be gone.
}
await run('DELETE FROM uploads WHERE id = ?', [entry.id]);
removed += 1;
}
if (removed > 0) {
await logEvent('cleanup', null, { removed });
}
}
app.use(ensureCsrfToken);
app.use((req, res, next) => {
if (['POST', 'PUT', 'PATCH', 'DELETE'].includes(req.method)) {
csrfGuard(req, res, next);
return;
}
next();
});
const cleanupTimer = setInterval(() => {
cleanupExpired().catch(() => undefined);
}, 60 * 1000);
cleanupExpired().catch(() => undefined);
app.get(`${basePath}/`, (req, res) => {
const user = getUserFromRequest(req);
if (user) {
res.redirect(baseUrl('/dashboard'));
return;
}
res.redirect(baseUrl('/login'));
});
app.get(`${basePath}/login`, (req, res) => {
const user = getUserFromRequest(req);
if (user) {
res.redirect(baseUrl('/dashboard'));
return;
}
const body = `
<header>
<div>
<h1>Dateiverwaltung</h1>
<div class="muted">Bitte anmelden, um Uploads zu verwalten.</div>
</div>
</header>
<section class="card">
<form method="post" action="${baseUrl('/login')}">
${csrfField(res.locals.csrfToken)}
<label>
Benutzername
<input name="username" autocomplete="username" required />
</label>
<label>
Passwort
<input type="password" name="password" autocomplete="current-password" required />
</label>
<button type="submit">Anmelden</button>
</form>
</section>
`;
res.send(renderPage('Anmeldung', body));
});
app.post(`${basePath}/login`, loginRateLimit('user'), async (req, res) => {
const username = String(req.body.username || '').trim();
const password = String(req.body.password || '');
const hash = await getUserHash(username);
if (!hash || !bcrypt.compareSync(password, hash)) {
const body = `
<header>
<div>
<h1>Dateiverwaltung</h1>
<div class="muted">Bitte anmelden, um Uploads zu verwalten.</div>
</div>
</header>
<section class="card">
<div class="pill">Anmeldung fehlgeschlagen</div>
<form method="post" action="${baseUrl('/login')}">
${csrfField(res.locals.csrfToken)}
<label>
Benutzername
<input name="username" autocomplete="username" required />
</label>
<label>
Passwort
<input type="password" name="password" autocomplete="current-password" required />
</label>
<button type="submit">Anmelden</button>
</form>
</section>
`;
res.status(401).send(renderPage('Anmeldung', body));
return;
}
const token = jwt.sign({ sub: username }, jwtSecret, { expiresIn: '2h' });
res.cookie('auth', token, {
httpOnly: true,
sameSite: 'lax',
maxAge: jwtMaxAgeMs,
secure: process.env.COOKIE_SECURE === 'true',
});
clearLoginAttempts('user', req);
await logEvent('login', username, { ok: true });
res.redirect(baseUrl('/dashboard'));
});
app.post(`${basePath}/logout`, (req, res) => {
res.clearCookie('auth');
res.redirect(baseUrl('/login'));
});
app.get(`${basePath}/admin`, async (req, res) => {
if (!adminHash) {
res.status(404).send(renderPage('Admin', '<p class="card">Admin-Zugang ist nicht konfiguriert.</p>'));
return;
}
const user = getUserFromRequest(req);
if (user?.admin) {
res.redirect(baseUrl('/admin/dashboard'));
return;
}
const body = `
<header>
<div>
<h1>Adminbereich</h1>
<div class="muted">Admin-Passwort eingeben.</div>
</div>
</header>
<section class="card">
<form method="post" action="${baseUrl('/admin/login')}">
${csrfField(res.locals.csrfToken)}
<label>
Admin-Passwort
<input type="password" name="password" autocomplete="current-password" required />
</label>
<button type="submit">Anmelden</button>
</form>
</section>
`;
res.send(renderPage('Admin', body));
});
app.post(`${basePath}/admin/login`, loginRateLimit('admin'), async (req, res) => {
if (!adminHash) {
res.status(404).send(renderPage('Admin', '<p class="card">Admin-Zugang ist nicht konfiguriert.</p>'));
return;
}
const password = String(req.body.password || '');
if (!bcrypt.compareSync(password, adminHash)) {
const body = `
<header>
<div>
<h1>Adminbereich</h1>
<div class="muted">Admin-Passwort eingeben.</div>
</div>
</header>
<section class="card">
<div class="pill">Anmeldung fehlgeschlagen</div>
<form method="post" action="${baseUrl('/admin/login')}">
${csrfField(res.locals.csrfToken)}
<label>
Admin-Passwort
<input type="password" name="password" autocomplete="current-password" required />
</label>
<button type="submit">Anmelden</button>
</form>
</section>
`;
res.status(401).send(renderPage('Admin', body));
return;
}
const token = jwt.sign({ sub: 'admin', admin: true }, jwtSecret, { expiresIn: '2h' });
res.cookie('auth', token, {
httpOnly: true,
sameSite: 'lax',
maxAge: jwtMaxAgeMs,
secure: process.env.COOKIE_SECURE === 'true',
});
clearLoginAttempts('admin', req);
await logEvent('admin_login', 'admin', { ok: true });
res.redirect(baseUrl('/admin/dashboard'));
});
app.post(`${basePath}/admin/logout`, (req, res) => {
res.clearCookie('auth');
res.redirect(baseUrl('/admin'));
});
app.get(`${basePath}/admin/dashboard`, requireAdminPage, async (req, res) => {
const [
activeCount,
activeBytes,
distinctOwners,
totalUploads,
totalDeletes,
lastCleanup,
recentLogs,
allUploads,
] = await Promise.all([
get('SELECT COUNT(*) as count FROM uploads'),
get('SELECT COALESCE(SUM(size_bytes), 0) as total FROM uploads'),
get('SELECT COUNT(DISTINCT owner) as count FROM uploads'),
get('SELECT COUNT(*) as count FROM admin_logs WHERE event = ?', ['upload']),
get('SELECT COUNT(*) as count FROM admin_logs WHERE event IN (?, ?)', ['delete', 'cleanup']),
get('SELECT MAX(created_at) as ts FROM admin_logs WHERE event = ?', ['cleanup']),
all('SELECT event, owner, detail, created_at FROM admin_logs ORDER BY created_at DESC LIMIT 500'),
all('SELECT id, owner, original_name, stored_name, size_bytes, expires_at FROM uploads ORDER BY uploaded_at DESC'),
]);
const stats = `
<div class="row">
<div class="card"><strong>Aktive Uploads</strong><div class="muted">${activeCount.count}</div></div>
<div class="card"><strong>Aktive Größe</strong><div class="muted">${formatBytes(activeBytes.total)}</div></div>
<div class="card"><strong>Aktive Nutzer</strong><div class="muted">${distinctOwners.count}</div></div>
<div class="card"><strong>Uploads gesamt</strong><div class="muted">${totalUploads.count}</div></div>
<div class="card"><strong>Löschungen gesamt</strong><div class="muted">${totalDeletes.count}</div></div>
<div class="card"><strong>Letztes Cleanup</strong><div class="muted">${lastCleanup.ts ? formatTimestamp(lastCleanup.ts) : '—'}</div></div>
</div>
`;
const logRows = recentLogs.map((entry) => `
<tr>
<td>${formatTimestamp(entry.created_at)}</td>
<td>${escapeHtml(entry.event)}</td>
<td>${escapeHtml(entry.owner || '—')}</td>
<td>${escapeHtml(entry.detail || '')}</td>
</tr>
`).join('');
const adminUploadsRows = allUploads.map((item) => {
const fileUrl = `/_share/${item.stored_name}`;
const fileHref = encodeURI(fileUrl);
return `
<tr>
<td>${escapeHtml(item.owner)}</td>
<td>
<div><strong>${escapeHtml(item.original_name)}</strong></div>
<div class="muted"><a href="${fileHref}" target="_blank" rel="noopener">${escapeHtml(item.stored_name)}</a></div>
</td>
<td>${formatBytes(item.size_bytes)}</td>
<td>
<div>${formatTimestamp(item.expires_at)}</div>
<div class="muted">Noch ${formatCountdown(item.expires_at)}</div>
</td>
<td class="actions">
<form method="post" action="${baseUrl(`/admin/files/${item.id}/delete`)}">
${csrfField(res.locals.csrfToken)}
<button type="submit" class="secondary">Löschen</button>
</form>
<form method="post" action="${baseUrl(`/admin/files/${item.id}/extend`)}">
${csrfField(res.locals.csrfToken)}
<input name="extendHours" placeholder="Stunden hinzufügen" />
<button type="submit">Verlängern</button>
</form>
</td>
</tr>
`;
}).join('');
const body = `
<header>
<div>
<h1>Adminübersicht</h1>
<div class="muted">Systemstatistiken und Logs</div>
</div>
<div class="toolbar">
<a class="tag primary" href="${baseUrl('/admin/files')}">Dateimanager</a>
<a class="tag primary" href="${baseUrl('/admin/users')}">Benutzer verwalten</a>
<form method="post" action="${baseUrl('/admin/logout')}">
${csrfField(res.locals.csrfToken)}
<button type="submit" class="secondary">Abmelden</button>
</form>
</div>
</header>
<section class="card">
<h2>Statistiken</h2>
${stats}
</section>
<section class="card">
<h2>Letzte Ereignisse</h2>
<table>
<thead>
<tr>
<th>Zeit</th>
<th>Event</th>
<th>Nutzer</th>
<th>Details</th>
</tr>
</thead>
<tbody>
${logRows || '<tr><td colspan="4" class="muted">Keine Logs vorhanden.</td></tr>'}
</tbody>
</table>
</section>
<section class="card">
<h2>Aktive Uploads</h2>
${allUploads.length ? `
<table>
<thead>
<tr>
<th>Nutzer</th>
<th>Datei</th>
<th>Größe</th>
<th>Läuft ab</th>
<th>Aktionen</th>
</tr>
</thead>
<tbody>
${adminUploadsRows}
</tbody>
</table>
` : '<div class="muted">Keine aktiven Uploads.</div>'}
</section>
`;
res.send(renderPage('Adminübersicht', body, 'wide'));
});
app.get(`${basePath}/admin/users`, requireAdminPage, async (req, res) => {
const users = await all('SELECT username, created_at FROM users ORDER BY username ASC');
const rows = users.map((user) => {
const username = escapeHtml(user.username);
const encoded = encodeURIComponent(user.username);
return `
<tr>
<td>${username}</td>
<td>${formatTimestamp(user.created_at)}</td>
<td class="actions">
<form method="post" action="${baseUrl(`/admin/users/${encoded}/reset`)}">
${csrfField(res.locals.csrfToken)}
<input name="password" type="password" placeholder="Neues Passwort" required />
<button type="submit">Passwort setzen</button>
</form>
<form method="post" action="${baseUrl(`/admin/users/${encoded}/delete`)}">
${csrfField(res.locals.csrfToken)}
<button type="submit" class="secondary">Löschen</button>
</form>
</td>
</tr>
`;
}).join('');
const body = `
<header>
<div>
<h1>Benutzer verwalten</h1>
<div class="muted">Zugänge im System verwalten.</div>
</div>
<div class="toolbar">
<a class="tag" href="${baseUrl('/admin/dashboard')}">Zur Adminübersicht</a>
<form method="post" action="${baseUrl('/admin/logout')}">
${csrfField(res.locals.csrfToken)}
<button type="submit" class="secondary">Abmelden</button>
</form>
</div>
</header>
<section class="card">
<h2>Neuen Benutzer anlegen</h2>
<form method="post" action="${baseUrl('/admin/users/create')}">
${csrfField(res.locals.csrfToken)}
<label>
Benutzername
<input name="username" autocomplete="username" required />
</label>
<label>
Passwort
<input name="password" type="password" autocomplete="new-password" required />
</label>
<button type="submit">Erstellen</button>
</form>
</section>
<section class="card">
<h2>Benutzerliste</h2>
${users.length ? `
<table>
<thead>
<tr>
<th>Benutzername</th>
<th>Erstellt</th>
<th>Aktionen</th>
</tr>
</thead>
<tbody>
${rows}
</tbody>
</table>
` : '<div class="muted">Keine Benutzer vorhanden.</div>'}
</section>
`;
res.send(renderPage('Benutzer verwalten', body, 'wide'));
});
app.post(`${basePath}/admin/users/create`, requireAdminPage, async (req, res) => {
const username = String(req.body.username || '').trim();
const password = String(req.body.password || '');
if (!username || username.length > 200 || !password) {
res.status(400).send(renderPage('Benutzer verwalten', '<p class="card">Ungültige Eingabe.</p>', 'wide'));
return;
}
const hash = bcrypt.hashSync(password, 12);
try {
await run('INSERT INTO users (username, password_hash, created_at) VALUES (?, ?, ?)', [
username,
hash,
Date.now(),
]);
} catch (err) {
res.status(400).send(renderPage('Benutzer verwalten', '<p class="card">Benutzername existiert bereits.</p>', 'wide'));
return;
}
await logEvent('admin_user_create', 'admin', { username });
res.redirect(baseUrl('/admin/users'));
});
app.post(`${basePath}/admin/users/:username/reset`, requireAdminPage, async (req, res) => {
const username = decodeURIComponent(req.params.username || '');
const password = String(req.body.password || '');
if (!username || !password) {
res.status(400).send(renderPage('Benutzer verwalten', '<p class="card">Ungültige Eingabe.</p>', 'wide'));
return;
}
const hash = bcrypt.hashSync(password, 12);
await run('UPDATE users SET password_hash = ? WHERE username = ?', [hash, username]);
await logEvent('admin_user_reset', 'admin', { username });
res.redirect(baseUrl('/admin/users'));
});
app.post(`${basePath}/admin/users/:username/delete`, requireAdminPage, async (req, res) => {
const username = decodeURIComponent(req.params.username || '');
if (!username) {
res.status(400).send(renderPage('Benutzer verwalten', '<p class="card">Ungültige Eingabe.</p>', 'wide'));
return;
}
await run('DELETE FROM users WHERE username = ?', [username]);
await logEvent('admin_user_delete', 'admin', { username });
res.redirect(baseUrl('/admin/users'));
});
app.get(`${basePath}/admin/files`, requireAdminPage, async (req, res) => {
const relativePath = String(req.query.path || '').replace(/^\/+/, '');
const resolved = resolveAdminPath(relativePath);
if (!resolved) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Pfad.</p>'));
return;
}
let entries;
try {
entries = await fs.promises.readdir(resolved, { withFileTypes: true });
} catch (err) {
res.status(500).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ordner kann nicht gelesen werden.</p>'));
return;
}
const parentPath = relativePath ? relativePath.split('/').slice(0, -1).join('/') : '';
const filtered = entries.filter((entry) => entry.name !== '_share');
const details = await Promise.all(
filtered.map(async (entry) => {
const childPath = relativePath ? `${relativePath}/${entry.name}` : entry.name;
let stat = null;
try {
stat = await fs.promises.stat(path.join(resolved, entry.name));
} catch (err) {
stat = null;
}
return {
entry,
childPath,
isDir: entry.isDirectory(),
size: stat && stat.isFile() ? stat.size : null,
modifiedAt: stat ? stat.mtimeMs : null,
};
})
);
const dirs = details.filter((item) => item.isDir);
const files = details.filter((item) => !item.isDir);
const rowForEntry = (item) => {
const { entry, childPath, isDir, size, modifiedAt } = item;
const href = baseUrl(`/admin/files?path=${encodeURIComponent(childPath)}`);
const escapedName = escapeHtml(entry.name);
const escapedPath = escapeHtml(childPath);
return `
<tr>
<td>
<span class="name">
${isDir ? '<strong>DIR</strong>' : 'FILE'}
${isDir ? `<a class="folder" href="${href}">${escapedName}</a>` : escapedName}
</span>
</td>
<td>${isDir ? 'Ordner' : 'Datei'}</td>
<td>${size ? formatBytes(size) : '—'}</td>
<td>${modifiedAt ? formatTimestamp(modifiedAt) : '—'}</td>
<td class="actions">
<button type="button" class="secondary rename-trigger" data-path="${escapedPath}" data-name="${escapedName}">Umbenennen</button>
<button type="button" class="secondary move-trigger" data-path="${escapedPath}" data-name="${escapedName}">Verschieben</button>
<button type="button" class="secondary copy-trigger" data-path="${escapedPath}" data-name="${escapedName}">Kopieren</button>
<button type="button" class="secondary delete-trigger" data-path="${escapedPath}" data-name="${escapedName}">Löschen</button>
</td>
</tr>
`;
};
const tableRows = [
...dirs.map((entry) => rowForEntry(entry)),
...files.map((entry) => rowForEntry(entry)),
].join('');
const body = `
<header>
<div>
<h1>Admin-Dateimanager</h1>
<div class="muted">Verwalten aller Dateien (außer _share).</div>
</div>
<div class="toolbar">
<a class="tag" href="${baseUrl('/admin/dashboard')}">Zur Adminübersicht</a>
<form method="post" action="${baseUrl('/admin/logout')}">
${csrfField(res.locals.csrfToken)}
<button type="submit" class="secondary">Abmelden</button>
</form>
</div>
</header>
<section class="card browser-shell">
<div class="browser-bar">
<span class="tag">Pfad <span>/${escapeHtml(relativePath || '')}</span></span>
${relativePath ? `<a class="tag primary" href="${baseUrl(`/admin/files?path=${encodeURIComponent(parentPath)}`)}">&larr; Zurück</a>` : ''}
<div class="crumbs">
<span>Position:</span>
${relativePath ? relativePath.split('/').map((segment, idx, parts) => {
const crumbPath = parts.slice(0, idx + 1).join('/');
return `<a href="${baseUrl(`/admin/files?path=${encodeURIComponent(crumbPath)}`)}">${escapeHtml(segment)}</a>`;
}).join('<span>/</span>') : '<span>Root</span>'}
</div>
</div>
<div class="grid">
<div>
<h2>Ordner erstellen</h2>
<form method="post" action="${baseUrl('/admin/files/mkdir')}">
${csrfField(res.locals.csrfToken)}
<input type="hidden" name="path" value="${escapeHtml(relativePath)}" />
<label>
Ordnername
<input name="name" placeholder="z.B. Projekte" required />
</label>
<button type="submit">Erstellen</button>
</form>
</div>
<div>
<h2>Datei hochladen</h2>
<form method="post" action="${baseUrl(`/admin/files/upload?csrfToken=${encodeURIComponent(res.locals.csrfToken)}`)}" enctype="multipart/form-data">
${csrfField(res.locals.csrfToken)}
<input type="hidden" name="path" value="${escapeHtml(relativePath)}" />
<label>
Datei
<input type="file" name="file" required />
</label>
<button type="submit">Hochladen</button>
</form>
</div>
</div>
</section>
<section class="card">
<h2>Inhalt</h2>
${tableRows ? `
<table>
<thead>
<tr>
<th>Name</th>
<th>Typ</th>
<th>Größe</th>
<th>Geändert</th>
<th>Aktionen</th>
</tr>
</thead>
<tbody>
${tableRows}
</tbody>
</table>
` : '<div class="muted">Keine Eintraege in diesem Ordner.</div>'}
</section>
<dialog id="rename-dialog">
<form method="post" action="${baseUrl('/admin/files/rename')}" class="dialog-card">
${csrfField(res.locals.csrfToken)}
<input type="hidden" name="path" id="rename-path" />
<h2>Umbenennen</h2>
<div class="muted" id="rename-current"></div>
<label>
Neuer Name
<input name="newName" id="rename-name" required />
</label>
<div class="dialog-actions">
<button type="button" class="secondary dialog-close">Abbrechen</button>
<button type="submit">Speichern</button>
</div>
</form>
</dialog>
<dialog id="delete-dialog">
<form method="post" action="${baseUrl('/admin/files/delete')}" class="dialog-card">
${csrfField(res.locals.csrfToken)}
<input type="hidden" name="path" id="delete-path" />
<h2>Löschen</h2>
<div class="muted" id="delete-current"></div>
<div class="dialog-actions">
<button type="button" class="secondary dialog-close">Abbrechen</button>
<button type="submit">Löschen</button>
</div>
</form>
</dialog>
<dialog id="move-dialog">
<form method="post" action="${baseUrl('/admin/files/move')}" class="dialog-card">
${csrfField(res.locals.csrfToken)}
<input type="hidden" name="path" id="move-path" />
<h2>Verschieben</h2>
<div class="muted" id="move-current"></div>
<label>
Zielpfad (relativ)
<input name="targetPath" id="move-target" placeholder="z.B. archiv/ordner" required />
</label>
<div class="dialog-actions">
<button type="button" class="secondary dialog-close">Abbrechen</button>
<button type="submit">Verschieben</button>
</div>
</form>
</dialog>
<dialog id="copy-dialog">
<form method="post" action="${baseUrl('/admin/files/copy')}" class="dialog-card">
${csrfField(res.locals.csrfToken)}
<input type="hidden" name="path" id="copy-path" />
<h2>Kopieren</h2>
<div class="muted" id="copy-current"></div>
<label>
Zielpfad (relativ)
<input name="targetPath" id="copy-target" placeholder="z.B. archiv/ordner" required />
</label>
<div class="dialog-actions">
<button type="button" class="secondary dialog-close">Abbrechen</button>
<button type="submit">Kopieren</button>
</div>
</form>
</dialog>
<script>
const renameDialog = document.getElementById('rename-dialog');
const deleteDialog = document.getElementById('delete-dialog');
const moveDialog = document.getElementById('move-dialog');
const copyDialog = document.getElementById('copy-dialog');
const renamePath = document.getElementById('rename-path');
const renameName = document.getElementById('rename-name');
const renameCurrent = document.getElementById('rename-current');
const deletePath = document.getElementById('delete-path');
const deleteCurrent = document.getElementById('delete-current');
const movePath = document.getElementById('move-path');
const moveTarget = document.getElementById('move-target');
const moveCurrent = document.getElementById('move-current');
const copyPath = document.getElementById('copy-path');
const copyTarget = document.getElementById('copy-target');
const copyCurrent = document.getElementById('copy-current');
document.querySelectorAll('.rename-trigger').forEach((btn) => {
btn.addEventListener('click', () => {
renamePath.value = btn.dataset.path || '';
renameName.value = btn.dataset.name || '';
renameCurrent.textContent = 'Aktuell: ' + (btn.dataset.name || '');
renameDialog.showModal();
});
});
document.querySelectorAll('.move-trigger').forEach((btn) => {
btn.addEventListener('click', () => {
movePath.value = btn.dataset.path || '';
moveTarget.value = '';
moveCurrent.textContent = 'Quelle: ' + (btn.dataset.name || '');
moveDialog.showModal();
});
});
document.querySelectorAll('.copy-trigger').forEach((btn) => {
btn.addEventListener('click', () => {
copyPath.value = btn.dataset.path || '';
copyTarget.value = '';
copyCurrent.textContent = 'Quelle: ' + (btn.dataset.name || '');
copyDialog.showModal();
});
});
document.querySelectorAll('.delete-trigger').forEach((btn) => {
btn.addEventListener('click', () => {
deletePath.value = btn.dataset.path || '';
deleteCurrent.textContent = 'Datei/Ordner: ' + (btn.dataset.name || '');
deleteDialog.showModal();
});
});
document.querySelectorAll('.dialog-close').forEach((btn) => {
btn.addEventListener('click', () => {
renameDialog.close();
deleteDialog.close();
moveDialog.close();
copyDialog.close();
});
});
</script>
`;
res.send(renderFileManagerPage('Admin-Dateien', body));
});
app.post(`${basePath}/admin/files/mkdir`, requireAdminPage, async (req, res) => {
const relativePath = String(req.body.path || '').replace(/^\/+/, '');
const name = String(req.body.name || '').trim();
if (!name || name.includes('/') || name.includes('\\') || name === '_share') {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Ordnername.</p>'));
return;
}
const base = resolveAdminPath(relativePath);
if (!base) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Pfad.</p>'));
return;
}
const target = path.join(base, name);
await fs.promises.mkdir(target, { recursive: true });
await logEvent('admin_mkdir', 'admin', { path: path.join(relativePath, name) });
res.redirect(baseUrl(`/admin/files?path=${encodeURIComponent(relativePath)}`));
});
app.post(`${basePath}/admin/files/upload`, requireAdminPage, upload.single('file'), async (req, res) => {
const relativePath = String(req.body.path || '').replace(/^\/+/, '');
const base = resolveAdminPath(relativePath);
if (!base) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Pfad.</p>'));
return;
}
if (!req.file) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Keine Datei hochgeladen.</p>'));
return;
}
const filename = path.basename(req.file.originalname);
if (filename === '_share') {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Dateiname.</p>'));
return;
}
const target = path.join(base, filename);
try {
await fs.promises.rename(req.file.path, target);
} catch (err) {
if (err.code === 'EXDEV') {
await fs.promises.copyFile(req.file.path, target);
await fs.promises.unlink(req.file.path);
} else {
throw err;
}
}
await logEvent('admin_upload', 'admin', { path: path.join(relativePath, filename) });
res.redirect(baseUrl(`/admin/files?path=${encodeURIComponent(relativePath)}`));
});
app.post(`${basePath}/admin/files/rename`, requireAdminPage, async (req, res) => {
const relativePath = String(req.body.path || '').replace(/^\/+/, '');
const newName = String(req.body.newName || '').trim();
if (!relativePath) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Root kann nicht umbenannt werden.</p>'));
return;
}
if (!newName || newName.includes('/') || newName.includes('\\') || newName === '_share') {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger neuer Name.</p>'));
return;
}
const resolved = resolveAdminPath(relativePath);
if (!resolved) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Pfad.</p>'));
return;
}
const target = path.join(path.dirname(resolved), newName);
await fs.promises.rename(resolved, target);
await logEvent('admin_rename', 'admin', { from: relativePath, to: path.join(path.dirname(relativePath), newName) });
const parent = path.dirname(relativePath);
const nextPath = parent === '.' ? '' : parent;
res.redirect(baseUrl(`/admin/files?path=${encodeURIComponent(nextPath)}`));
});
app.post(`${basePath}/admin/files/delete`, requireAdminPage, async (req, res) => {
const relativePath = String(req.body.path || '').replace(/^\/+/, '');
if (!relativePath) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Root kann nicht gelöscht werden.</p>'));
return;
}
const resolved = resolveAdminPath(relativePath);
if (!resolved) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Pfad.</p>'));
return;
}
await fs.promises.rm(resolved, { recursive: true, force: true });
await logEvent('admin_delete', 'admin', { path: relativePath });
const parent = path.dirname(relativePath);
const nextPath = parent === '.' ? '' : parent;
res.redirect(baseUrl(`/admin/files?path=${encodeURIComponent(nextPath)}`));
});
app.post(`${basePath}/admin/files/move`, requireAdminPage, async (req, res) => {
const relativePath = String(req.body.path || '').replace(/^\/+/, '');
const targetPath = String(req.body.targetPath || '').replace(/^\/+/, '');
if (!relativePath || !targetPath) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültige Eingabe.</p>'));
return;
}
const source = resolveAdminPath(relativePath);
const targetBase = resolveAdminPath(targetPath);
if (!source || !targetBase) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Pfad.</p>'));
return;
}
let target = targetBase;
try {
const stat = await fs.promises.stat(targetBase);
if (stat.isDirectory()) {
target = path.join(targetBase, path.basename(source));
}
} catch (err) {
// targetBase does not exist; treat as file/dir path.
}
try {
await fs.promises.rename(source, target);
} catch (err) {
if (err.code === 'EXDEV') {
await fs.promises.cp(source, target, { recursive: true, force: false });
await fs.promises.rm(source, { recursive: true, force: true });
} else {
throw err;
}
}
await logEvent('admin_move', 'admin', { from: relativePath, to: targetPath });
res.redirect(baseUrl('/admin/files'));
});
app.post(`${basePath}/admin/files/copy`, requireAdminPage, async (req, res) => {
const relativePath = String(req.body.path || '').replace(/^\/+/, '');
const targetPath = String(req.body.targetPath || '').replace(/^\/+/, '');
if (!relativePath || !targetPath) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültige Eingabe.</p>'));
return;
}
const source = resolveAdminPath(relativePath);
const targetBase = resolveAdminPath(targetPath);
if (!source || !targetBase) {
res.status(400).send(renderFileManagerPage('Admin-Dateien', '<p class="card">Ungültiger Pfad.</p>'));
return;
}
let target = targetBase;
try {
const stat = await fs.promises.stat(targetBase);
if (stat.isDirectory()) {
target = path.join(targetBase, path.basename(source));
}
} catch (err) {
// targetBase does not exist; treat as file/dir path.
}
await fs.promises.cp(source, target, { recursive: true, force: false });
await logEvent('admin_copy', 'admin', { from: relativePath, to: targetPath });
res.redirect(baseUrl('/admin/files'));
});
app.post(`${basePath}/admin/files/:id/delete`, requireAdminPage, async (req, res) => {
const uploadEntry = await get('SELECT id, stored_path FROM uploads WHERE id = ?', [req.params.id]);
if (!uploadEntry) {
res.status(404).send(renderPage('Nicht gefunden', '<p class="card">Upload nicht gefunden.</p>'));
return;
}
try {
await fs.promises.unlink(uploadEntry.stored_path);
} catch (err) {
// Ignore missing files.
}
await run('DELETE FROM uploads WHERE id = ?', [uploadEntry.id]);
await logEvent('delete', 'admin', { id: uploadEntry.id });
res.redirect(baseUrl('/admin/dashboard'));
});
app.post(`${basePath}/admin/files/:id/extend`, requireAdminPage, async (req, res) => {
const uploadEntry = await get('SELECT id, expires_at FROM uploads WHERE id = ?', [req.params.id]);
if (!uploadEntry) {
res.status(404).send(renderPage('Nicht gefunden', '<p class="card">Upload nicht gefunden.</p>'));
return;
}
const override = parseFloat(req.body.extendHours || '');
const extensionSeconds = Number.isFinite(override) && override > 0
? Math.round(override * 3600)
: uploadTtlSeconds;
const now = Date.now();
const base = Math.max(uploadEntry.expires_at, now);
const maxExpiry = now + maxRetentionSeconds * 1000;
const nextExpiry = Math.min(base + extensionSeconds * 1000, maxExpiry);
await run('UPDATE uploads SET expires_at = ? WHERE id = ?', [nextExpiry, uploadEntry.id]);
await logEvent('extend', 'admin', { id: uploadEntry.id, expires_at: nextExpiry });
res.redirect(baseUrl('/admin/dashboard'));
});
app.get(`${basePath}/dashboard`, requireAuthPage, async (req, res) => {
const uploads = await all(
'SELECT id, original_name, stored_name, size_bytes, uploaded_at, expires_at FROM uploads WHERE owner = ? ORDER BY uploaded_at DESC',
[req.user.username]
);
const rows = uploads.map((item) => {
const fileUrl = `/_share/${item.stored_name}`;
const fileHref = encodeURI(fileUrl);
return `
<tr>
<td>
<div><strong>${escapeHtml(item.original_name)}</strong></div>
<div class="muted"><a href="${fileHref}" target="_blank" rel="noopener">${escapeHtml(item.stored_name)}</a></div>
</td>
<td>${formatBytes(item.size_bytes)}</td>
<td>
<div>${formatTimestamp(item.expires_at)}</div>
<div class="muted">Noch ${formatCountdown(item.expires_at)}</div>
</td>
<td class="actions">
<button type="button" class="secondary copy-link" data-path="${fileHref}">Link kopieren</button>
<form method="post" action="${baseUrl(`/files/${item.id}/delete`)}">
${csrfField(res.locals.csrfToken)}
<button type="submit" class="secondary">Löschen</button>
</form>
<form method="post" action="${baseUrl(`/files/${item.id}/extend`)}">
${csrfField(res.locals.csrfToken)}
<input name="extendHours" placeholder="Stunden hinzufügen" />
<button type="submit">Verlängern</button>
</form>
</td>
</tr>
`;
}).join('');
const body = `
<header>
<div>
<h1>Dateiverwaltung</h1>
<div class="muted">Angemeldet als ${escapeHtml(req.user.username)}</div>
</div>
<form method="post" action="${baseUrl('/logout')}">
${csrfField(res.locals.csrfToken)}
<button type="submit" class="secondary">Abmelden</button>
</form>
</header>
<section class="card">
<h2>Datei hochladen</h2>
<form id="upload-form">
${csrfField(res.locals.csrfToken)}
<label>
Datei
<input type="file" name="file" required />
</label>
<label>
Aufbewahrung (Stunden)
<input name="retentionHours" placeholder="${uploadTtlSeconds / 3600}" />
</label>
<button type="submit">Hochladen</button>
<progress id="upload-progress" value="0" max="100"></progress>
<div id="upload-status" class="muted"></div>
</form>
</section>
<section class="card">
<h2>Aktuelle Uploads</h2>
${uploads.length ? `
<table>
<thead>
<tr>
<th>Datei</th>
<th>Größe</th>
<th>Läuft ab</th>
<th>Aktionen</th>
</tr>
</thead>
<tbody>
${rows}
</tbody>
</table>
` : '<div class="muted">Noch keine Uploads.</div>'}
</section>
<script>
const uploadForm = document.getElementById('upload-form');
const csrfToken = ${JSON.stringify(res.locals.csrfToken)};
const progress = document.getElementById('upload-progress');
const status = document.getElementById('upload-status');
const copyButtons = document.querySelectorAll('.copy-link');
uploadForm.addEventListener('submit', (event) => {
event.preventDefault();
status.textContent = '';
progress.value = 0;
const xhr = new XMLHttpRequest();
xhr.open('POST', ${JSON.stringify(baseUrl('/api/upload'))});
xhr.setRequestHeader('X-CSRF-Token', csrfToken);
xhr.upload.addEventListener('progress', (e) => {
if (e.lengthComputable) {
progress.value = Math.round((e.loaded / e.total) * 100);
}
});
xhr.addEventListener('load', () => {
if (xhr.status >= 200 && xhr.status < 300) {
status.textContent = 'Upload abgeschlossen. Liste wird aktualisiert...';
window.location.reload();
} else {
status.textContent = 'Upload fehlgeschlagen.';
}
});
xhr.addEventListener('error', () => {
status.textContent = 'Upload fehlgeschlagen.';
});
xhr.send(new FormData(uploadForm));
});
copyButtons.forEach((button) => {
const originalText = button.textContent;
button.addEventListener('click', async () => {
const path = button.dataset.path || '';
const url = window.location.origin + path;
try {
await navigator.clipboard.writeText(url);
button.textContent = 'Kopiert!';
} catch (err) {
const helper = document.createElement('textarea');
helper.value = url;
document.body.appendChild(helper);
helper.select();
document.execCommand('copy');
document.body.removeChild(helper);
button.textContent = 'Kopiert!';
}
setTimeout(() => {
button.textContent = originalText;
}, 2000);
});
});
</script>
`;
res.send(renderPage('Übersicht', body));
});
app.post(`${basePath}/api/upload`, requireAuthApi, upload.single('file'), async (req, res) => {
if (!req.file) {
res.status(400).json({ error: 'No file uploaded' });
return;
}
const now = Date.now();
const ext = sanitizeExtension(req.file.originalname);
const baseName = sanitizeBaseName(req.file.originalname);
const token = createRandomId();
const storedName = `_${baseName}-${token}${ext}`;
const storedPath = path.join(shareDir, storedName);
const retentionOverride = parseFloat(req.body.retentionHours || '');
const retentionSeconds = Number.isFinite(retentionOverride) && retentionOverride > 0
? Math.round(retentionOverride * 3600)
: uploadTtlSeconds;
const cappedRetention = Math.min(retentionSeconds, maxRetentionSeconds);
try {
await fs.promises.rename(req.file.path, storedPath);
} catch (err) {
if (err.code === 'EXDEV') {
await fs.promises.copyFile(req.file.path, storedPath);
await fs.promises.unlink(req.file.path);
} else {
throw err;
}
}
await run(
`INSERT INTO uploads (owner, original_name, stored_name, stored_path, size_bytes, uploaded_at, expires_at)
VALUES (?, ?, ?, ?, ?, ?, ?)`,
[
req.user.username,
req.file.originalname,
storedName,
storedPath,
req.file.size,
now,
now + cappedRetention * 1000,
]
);
await logEvent('upload', req.user.username, { name: storedName, size: req.file.size });
res.json({ ok: true, name: storedName });
});
app.post(`${basePath}/files/:id/delete`, requireAuthPage, async (req, res) => {
const uploadEntry = await get('SELECT id, stored_path FROM uploads WHERE id = ? AND owner = ?', [
req.params.id,
req.user.username,
]);
if (!uploadEntry) {
res.status(404).send(renderPage('Nicht gefunden', '<p class="card">Upload nicht gefunden.</p>'));
return;
}
try {
await fs.promises.unlink(uploadEntry.stored_path);
} catch (err) {
// Ignore missing files.
}
await run('DELETE FROM uploads WHERE id = ?', [uploadEntry.id]);
await logEvent('delete', req.user.username, { id: uploadEntry.id });
res.redirect(baseUrl('/dashboard'));
});
app.post(`${basePath}/files/:id/extend`, requireAuthPage, async (req, res) => {
const uploadEntry = await get('SELECT id, expires_at FROM uploads WHERE id = ? AND owner = ?', [
req.params.id,
req.user.username,
]);
if (!uploadEntry) {
res.status(404).send(renderPage('Nicht gefunden', '<p class="card">Upload nicht gefunden.</p>'));
return;
}
const override = parseFloat(req.body.extendHours || '');
const extensionSeconds = Number.isFinite(override) && override > 0
? Math.round(override * 3600)
: uploadTtlSeconds;
const now = Date.now();
const base = Math.max(uploadEntry.expires_at, now);
const maxExpiry = now + maxRetentionSeconds * 1000;
const nextExpiry = Math.min(base + extensionSeconds * 1000, maxExpiry);
await run('UPDATE uploads SET expires_at = ? WHERE id = ?', [nextExpiry, uploadEntry.id]);
await logEvent('extend', req.user.username, { id: uploadEntry.id, expires_at: nextExpiry });
res.redirect(baseUrl('/dashboard'));
});
app.use((req, res) => {
res.status(404).send(renderPage('Nicht gefunden', '<p class="card">Seite nicht gefunden.</p>'));
});
const server = app.listen(port, () => {
console.log(`Express server listening on ${port} with base path ${basePath}`);
});
function shutdown(signal) {
clearInterval(cleanupTimer);
server.close(() => {
db.close(() => {
console.log(`Shutdown complete (${signal}).`);
process.exit(0);
});
});
setTimeout(() => {
console.error('Forced shutdown after timeout.');
process.exit(1);
}, 5000).unref();
}
process.on('SIGTERM', () => shutdown('SIGTERM'));
process.on('SIGINT', () => shutdown('SIGINT'));