Fix of hexdigest

Web/push_notifications.py

@@ -122,29 +122,33 @@ def get_user_subscriptions(username):
 
 
 def save_push_subscription(username, subscription_obj):
-    """Save a new push subscription for a user with field-level encryption."""
+    import traceback  # Hilft uns, Fehler genau zu sehen
     try:
+        print("--- DEBUG PUSH PAYLOAD ---")
+        print(subscription_obj)
+
         endpoint = subscription_obj.get('endpoint')
         keys = subscription_obj.get('keys', {})
 
         if not endpoint or not keys.get('p256dh') or not keys.get('auth'):
-            logger.warning(f'Invalid subscription object for {username}: missing endpoint or keys')
+            print(
+                f"DEBUG FEHLER: Keys fehlen! Endpoint: {bool(endpoint)}, p256dh: {bool(keys.get('p256dh'))}, auth: {bool(keys.get('auth'))}")
             return False
 
         client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
         db = client[cfg.MONGODB_DB]
         subs_col = get_push_subscriptions_collection(db)
-        
+
         # Create unique hash of subscription using plaintext data to avoid duplicates
         sub_hash = hashlib.shake_256(
             f"{username}:{endpoint}".encode('utf-8')
-        ).hexdigest()
-        
+        ).hexdigest(32)
+
         # Check if subscription already exists by Hash
         existing = subs_col.find_one({
             'SubscriptionHash': sub_hash
         })
-        
+
         if existing:
             subs_col.update_one(
                 {'_id': existing['_id']},
@@ -156,10 +160,10 @@ def save_push_subscription(username, subscription_obj):
             logger.info('Updated existing push subscription')
             client.close()
             return True
-        
+
         # Format keys as JSON string for your encrypt_text module
         keys_str = json.dumps(subscription_obj.get('keys', {}))
-        
+
         # Save new subscription, encrypting sensitive fields
         subscription_doc = {
             'UsernameHash': _get_username_hash(username),
@@ -172,14 +176,16 @@ def save_push_subscription(username, subscription_obj):
             'LastUsed': datetime.datetime.now(),
             'UserAgent': subscription_obj.get('userAgent', ''),
         }
-        
+
         subs_col.insert_one(subscription_doc)
         logger.info('Saved new encrypted push subscription')
         client.close()
         return True
-        
+
+
     except Exception as e:
-        logger.error(f'Error saving push subscription: {e}')
+        print(f"DEBUG ABSTURZ in save_push_subscription: {e}")
+        traceback.print_exc()
         return False
 
 
@@ -191,7 +197,7 @@ def remove_push_subscription(username, endpoint):
 
         sub_hash = hashlib.shake_256(
             f"{username}:{endpoint}".encode('utf-8')
-        ).hexdigest()
+        ).hexdigest(32)
 
         result = subs_col.update_one(
             {'SubscriptionHash': sub_hash},

Web/static/js/push-notifications.js

@@ -161,15 +161,19 @@ class PushNotificationManager {
         try {
             const subscription = await this.serviceWorkerRegistration.pushManager.getSubscription();
             if (!subscription) {
-                console.warn('No active push subscription');
-                return true; // Bereits deaktiviert
+                return true;
             }
 
-            // Best-Effort: Dem Server Bescheid geben (wir ignorieren absichtlich,
-            // falls der Server das Abo nicht mehr kennt)
-            await this.removeSubscriptionFromServer(subscription);
+            // Best-Effort: Server benachrichtigen (Eigener try/catch Block!)
+            try {
+                await this.removeSubscriptionFromServer(subscription);
+            } catch (serverError) {
+                // Fehler vom Server ignorieren wir absichtlich.
+                // Das Skript läuft weiter, statt hier abzubrechen!
+                console.warn('Server-Abmeldung fehlgeschlagen, lösche lokal trotzdem:', serverError);
+            }
 
-            // WICHTIG: Das Abo im Browser immer zwingend löschen!
+            // WICHTIG: Das hier wird jetzt garantiert ausgeführt
             await subscription.unsubscribe();
             return true;