v1.6.1: Sicherheit – Rate Limiting, Default-PW via Env, AUTH_SECRET Pflicht, Bcrypt 12

lib/ratelimit.ts

@@ -0,0 +1,38 @@
+// In-memory rate limiter – funktioniert pro Prozess (single Docker container).
+// Erlaubt MAX_ATTEMPTS Versuche pro IP innerhalb WINDOW_MS Millisekunden.
+
+const MAX_ATTEMPTS = 10;
+const WINDOW_MS = 15 * 60 * 1000; // 15 Minuten
+
+interface Entry {
+  count: number;
+  resetAt: number;
+}
+
+const store = new Map<string, Entry>();
+
+// Aufräumen abgelaufener Einträge alle 5 Minuten
+setInterval(() => {
+  const now = Date.now();
+  for (const [key, entry] of store) {
+    if (entry.resetAt < now) store.delete(key);
+  }
+}, 5 * 60 * 1000);
+
+export function checkRateLimit(ip: string): { allowed: boolean; remainingMs: number } {
+  const now = Date.now();
+  const entry = store.get(ip);
+
+  if (!entry || entry.resetAt < now) {
+    store.set(ip, { count: 1, resetAt: now + WINDOW_MS });
+    return { allowed: true, remainingMs: 0 };
+  }
+
+  entry.count += 1;
+
+  if (entry.count > MAX_ATTEMPTS) {
+    return { allowed: false, remainingMs: entry.resetAt - now };
+  }
+
+  return { allowed: true, remainingMs: 0 };
+}