News: Cache-Buster für Bild-URLs, HEAD, Limiter-Feinschliff

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/routes/publicNews.js

@@ -19,10 +19,16 @@ const IMAGE_FILE_RE = /^([A-Za-z0-9][A-Za-z0-9._-]*?)(-s)?\.webp$/
 
 // Limit je IP und Minute (im Speicher); die App steht hinter Traefik, 'trust proxy' ist gesetzt -> req.ip ist die Client-IP
 const hits = new Map()
+let lastPrune = 0
 function rateLimited(ip) {
   const now = Date.now()
-  for (const [key, entry] of hits) if (now - entry.start >= WINDOW_MS) hits.delete(key)
+  // Aufraeumen hoechstens einmal je Fenster
+  if (now - lastPrune >= WINDOW_MS) {
+    lastPrune = now
+    for (const [key, entry] of hits) if (now - entry.start >= WINDOW_MS) hits.delete(key)
+  }
   let entry = hits.get(ip)
+  if (entry && now - entry.start >= WINDOW_MS) entry = null
   if (!entry) {
     entry = { start: now, count: 0 }
     hits.set(ip, entry)
@@ -34,12 +40,12 @@ function rateLimited(ip) {
 router.use((req, res, next) => {
   res.set({
     'Access-Control-Allow-Origin': '*',
-    'Access-Control-Allow-Methods': 'GET, OPTIONS',
+    'Access-Control-Allow-Methods': 'GET, HEAD, OPTIONS',
     'Access-Control-Allow-Headers': 'Content-Type, If-None-Match',
     'Access-Control-Max-Age': '86400',
   })
   if (req.method === 'OPTIONS') return res.sendStatus(204)
-  if (req.method !== 'GET') return res.status(405).json({ error: 'Methode nicht erlaubt' })
+  if (req.method !== 'GET' && req.method !== 'HEAD') return res.status(405).json({ error: 'Methode nicht erlaubt' })
   if (rateLimited(req.ip)) {
     res.set('Retry-After', '60')
     return res.status(429).json({ error: 'Zu viele Anfragen. Bitte versuch es gleich noch einmal.' })
@@ -67,7 +73,7 @@ router.get('/:siteKey', async (req, res) => {
     return sendJsonWithEtag(req, res, {
       posts: posts.map((p) => ({
         ...p,
-        image: p.image ? { w: p.image.w, h: p.image.h, src: `${base}/${p.id}.webp`, srcSmall: `${base}/${p.id}-s.webp` } : null,
+        image: p.image ? { w: p.image.w, h: p.image.h, src: `${base}/${p.id}.webp?v=${p.image.v}`, srcSmall: `${base}/${p.id}-s.webp?v=${p.image.v}` } : null,
       })),
       hasMore,
     })