Merge pull request 'keycloak and better canvas' (#6) from keycloak into main

Reviewed-on: #6

INSTALLATION.md

@@ -51,6 +51,12 @@ EXPORT_PATH=./exports/           # Speicherort für SVG-Exports
 ENABLE_AUTOMATIC_EVENTS=false   # Automatische Events deaktiviert
 EVENT_DURATION_MINUTES=30       # Event-Dauer
 EVENT_INTERVAL_HOURS=6          # Abstand zwischen Events
+
+# Keycloak Authentifizierung (optional)
+ENABLE_KEYCLOAK=false           # Keycloak-Authentifizierung
+KEYCLOAK_REALM=rplace          # Keycloak Realm Name
+KEYCLOAK_AUTH_URL=http://localhost:8080  # Keycloak Server URL
+KEYCLOAK_CLIENT_ID=rplace-client # Keycloak Client ID Events
 ```
 
 ## Schritt 4: PostgreSQL Datenbank einrichten (optional)

KEYCLOAK_SETUP.md

@@ -0,0 +1,96 @@
+
+# Keycloak Setup für r/place
+
+## Keycloak Installation
+
+### Docker (Empfohlen)
+```bash
+docker run -d \
+  --name keycloak \
+  -p 8080:8080 \
+  -e KEYCLOAK_ADMIN=admin \
+  -e KEYCLOAK_ADMIN_PASSWORD=admin \
+  quay.io/keycloak/keycloak:latest \
+  start-dev
+```
+
+### Standalone Installation
+1. Lade Keycloak von https://www.keycloak.org/downloads herunter
+2. Entpacke das Archiv
+3. Starte Keycloak: `bin/kc.sh start-dev`
+
+## Konfiguration
+
+### 1. Admin Console öffnen
+Gehe zu http://localhost:8080/admin und melde dich mit admin/admin an.
+
+### 2. Realm erstellen
+1. Klicke auf "Create Realm"
+2. Name: `rplace`
+3. Klicke "Create"
+
+### 3. Client erstellen
+1. Gehe zu "Clients" → "Create client"
+2. Client ID: `rplace-client`
+3. Client type: `OpenID Connect`
+4. Klicke "Next"
+5. Client authentication: `OFF` (Public client)
+6. Standard flow: `ON`
+7. Direct access grants: `ON`
+8. Klicke "Save"
+
+### 4. Client Settings
+1. Gehe zu deinem Client `rplace-client`
+2. Settings Tab:
+   - Valid redirect URIs: `http://localhost:5000/*`
+   - Valid post logout redirect URIs: `http://localhost:5000/*`
+   - Web origins: `http://localhost:5000`
+3. Klicke "Save"
+
+### 5. Test User erstellen
+1. Gehe zu "Users" → "Add user"
+2. Username: `testuser`
+3. Klicke "Create"
+4. Gehe zum "Credentials" Tab
+5. Setze ein Passwort und deaktiviere "Temporary"
+
+## r/place Konfiguration
+
+Bearbeite `config.cfg`:
+```ini
+ENABLE_KEYCLOAK=true
+KEYCLOAK_REALM=rplace
+KEYCLOAK_AUTH_URL=http://localhost:8080
+KEYCLOAK_CLIENT_ID=rplace-client
+```
+
+## Erweiterte Konfiguration
+
+### HTTPS (Produktion)
+Für Produktionsumgebungen:
+```ini
+KEYCLOAK_AUTH_URL=https://dein-keycloak-server.de
+```
+
+### Benutzer-Attribute
+Du kannst zusätzliche Benutzerattribute in Keycloak konfigurieren:
+1. Gehe zu "Client scopes"
+2. Bearbeite "profile" scope
+3. Füge Mappers für zusätzliche Attribute hinzu
+
+### Sicherheit
+- Ändere Admin-Passwort
+- Konfiguriere SSL/TLS
+- Setze starke Passwort-Richtlinien
+- Aktiviere Brute-Force-Schutz
+
+## Fehlerbehebung
+
+### CORS-Probleme
+Stelle sicher, dass die Web origins korrekt konfiguriert sind.
+
+### Token-Probleme
+Überprüfe die Client-Konfiguration und Redirect-URIs.
+
+### Verbindungsprobleme
+Stelle sicher, dass Keycloak erreichbar ist und die URLs korrekt sind.

client/src/components/auth-banner.tsx

@@ -0,0 +1,58 @@
+
+import { useEffect, useState } from "react";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { getAuthStatus, type AuthStatus } from "@/lib/config";
+
+export function AuthBanner() {
+  const [authStatus, setAuthStatus] = useState<AuthStatus | null>(null);
+
+  useEffect(() => {
+    getAuthStatus().then(setAuthStatus);
+  }, []);
+
+  if (!authStatus?.keycloakEnabled) {
+    return null;
+  }
+
+  if (authStatus.authenticated) {
+    return (
+      <div className="bg-green-50 border-b border-green-200 p-3">
+        <div className="flex items-center justify-between max-w-7xl mx-auto">
+          <div className="flex items-center gap-2">
+            <span className="text-green-700 font-medium">
+              Angemeldet als {authStatus.user?.username}
+            </span>
+          </div>
+          <Button
+            variant="outline"
+            size="sm"
+            onClick={() => window.location.href = "/logout"}
+            className="border-green-300 text-green-700 hover:bg-green-100"
+          >
+            Abmelden
+          </Button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="bg-blue-50 border-b border-blue-200 p-3">
+      <div className="flex items-center justify-between max-w-7xl mx-auto">
+        <div className="flex items-center gap-2">
+          <span className="text-blue-700">
+            Melde dich an, um Pixel zu platzieren
+          </span>
+        </div>
+        <Button
+          onClick={() => window.location.href = "/login"}
+          className="bg-blue-600 hover:bg-blue-700 text-white"
+          size="sm"
+        >
+          Anmelden
+        </Button>
+      </div>
+    </div>
+  );
+}

client/src/components/optimized-canvas.tsx

@@ -1,3 +1,4 @@
+
 import { useEffect, useRef, useState, useCallback } from "react";
 import { Pixel } from "@shared/schema";
 import { cn } from "@/lib/utils";
@@ -22,9 +23,11 @@ export function OptimizedCanvas({
   const canvasRef = useRef<HTMLCanvasElement>(null);
   const containerRef = useRef<HTMLDivElement>(null);
   const [zoom, setZoom] = useState(1);
-  const [pixelSize, setPixelSize] = useState(8);
+  const pixelSize = Math.max(2, 8 * zoom);
   const [mouseCoords, setMouseCoords] = useState<{x: number, y: number} | null>(null);
   const [previewPixel, setPreviewPixel] = useState<{x: number, y: number} | null>(null);
+  const [isPanning, setIsPanning] = useState(false);
+  const [lastPanPosition, setLastPanPosition] = useState<{x: number, y: number} | null>(null);
 
   // Create pixel map for O(1) lookup
   const pixelMap = new Map<string, string>();
@@ -117,10 +120,6 @@ export function OptimizedCanvas({
     drawCanvas();
   }, [drawCanvas]);
 
-  useEffect(() => {
-    setPixelSize(Math.max(2, 8 * zoom));
-  }, [zoom]);
-
   const getPixelCoordinates = (event: React.MouseEvent<HTMLCanvasElement>) => {
     const canvas = canvasRef.current;
     if (!canvas) return null;
@@ -158,18 +157,114 @@ export function OptimizedCanvas({
   const handleCanvasMouseLeave = () => {
     setMouseCoords(null);
     setPreviewPixel(null);
+    setIsPanning(false);
+    setLastPanPosition(null);
+  };
+
+  const handleMouseDown = (e: React.MouseEvent) => {
+    // Mittlere Maustaste (Button 1)
+    if (e.button === 1) {
+      e.preventDefault();
+      setIsPanning(true);
+      setLastPanPosition({ x: e.clientX, y: e.clientY });
+    }
+  };
+
+  const handleMouseUp = (e: React.MouseEvent) => {
+    if (e.button === 1) {
+      e.preventDefault();
+      setIsPanning(false);
+      setLastPanPosition(null);
+    }
+  };
+
+  const handleMouseMoveContainer = (e: React.MouseEvent) => {
+    if (isPanning && lastPanPosition && containerRef.current) {
+      e.preventDefault();
+      
+      const deltaX = e.clientX - lastPanPosition.x;
+      const deltaY = e.clientY - lastPanPosition.y;
+      
+      const container = containerRef.current;
+      container.scrollLeft -= deltaX;
+      container.scrollTop -= deltaY;
+      
+      setLastPanPosition({ x: e.clientX, y: e.clientY });
+    }
+  };
+
+  const zoomToPoint = (newZoom: number, mouseX?: number, mouseY?: number) => {
+    const container = containerRef.current;
+    if (!container) return;
+    
+    const clampedZoom = Math.max(0.1, Math.min(newZoom, 5));
+    if (Math.abs(clampedZoom - zoom) < 0.01) return;
+    
+    const oldPixelSize = pixelSize;
+    const newPixelSize = Math.max(2, 8 * clampedZoom);
+    
+    // Aktuelle Scroll-Position
+    const currentScrollLeft = container.scrollLeft;
+    const currentScrollTop = container.scrollTop;
+    
+    let zoomPointX, zoomPointY;
+    
+    if (mouseX !== undefined && mouseY !== undefined) {
+      // Zoomen an Mausposition
+      const containerRect = container.getBoundingClientRect();
+      const relativeMouseX = mouseX - containerRect.left;
+      const relativeMouseY = mouseY - containerRect.top;
+      
+      // Canvas-Koordinaten der Mausposition
+      zoomPointX = (currentScrollLeft + relativeMouseX - 32) / oldPixelSize;
+      zoomPointY = (currentScrollTop + relativeMouseY - 32) / oldPixelSize;
+      
+      setZoom(clampedZoom);
+      
+      // Neue Scroll-Position berechnen, damit Mausposition gleich bleibt
+      requestAnimationFrame(() => {
+        const newScrollLeft = zoomPointX * newPixelSize + 32 - relativeMouseX;
+        const newScrollTop = zoomPointY * newPixelSize + 32 - relativeMouseY;
+        
+        container.scrollTo({
+          left: Math.max(0, Math.min(newScrollLeft, container.scrollWidth - container.clientWidth)),
+          top: Math.max(0, Math.min(newScrollTop, container.scrollHeight - container.clientHeight)),
+          behavior: 'auto'
+        });
+      });
+    } else {
+      // Zoomen im Center des Viewports
+      const containerWidth = container.clientWidth;
+      const containerHeight = container.clientHeight;
+      
+      zoomPointX = (currentScrollLeft + containerWidth / 2 - 32) / oldPixelSize;
+      zoomPointY = (currentScrollTop + containerHeight / 2 - 32) / oldPixelSize;
+      
+      setZoom(clampedZoom);
+      
+      requestAnimationFrame(() => {
+        const newScrollLeft = zoomPointX * newPixelSize + 32 - containerWidth / 2;
+        const newScrollTop = zoomPointY * newPixelSize + 32 - containerHeight / 2;
+        
+        container.scrollTo({
+          left: Math.max(0, Math.min(newScrollLeft, container.scrollWidth - container.clientWidth)),
+          top: Math.max(0, Math.min(newScrollTop, container.scrollHeight - container.clientHeight)),
+          behavior: 'smooth'
+        });
+      });
+    }
   };
 
   const handleZoomIn = () => {
-    setZoom(prev => Math.min(prev * 1.2, 3));
+    zoomToPoint(zoom * 1.2);
   };
 
   const handleZoomOut = () => {
-    setZoom(prev => Math.max(prev / 1.2, 0.5));
+    zoomToPoint(zoom / 1.2);
   };
 
   const handleResetZoom = () => {
-    setZoom(1);
+    zoomToPoint(1);
   };
 
   const handleWheel = (e: React.WheelEvent) => {
@@ -178,23 +273,39 @@ export function OptimizedCanvas({
     const zoomFactor = 1.1;
     const delta = e.deltaY;
     
+    let newZoom;
     if (delta < 0) {
-      setZoom(prev => Math.min(prev * zoomFactor, 3));
+      newZoom = zoom * zoomFactor;
     } else {
-      setZoom(prev => Math.max(prev / zoomFactor, 0.5));
+      newZoom = zoom / zoomFactor;
     }
+    
+    zoomToPoint(newZoom, e.clientX, e.clientY);
   };
 
   return (
     <div className="flex-1 relative bg-canvas-bg overflow-hidden">
       <div 
         ref={containerRef}
-        className="w-full h-full overflow-auto p-8 scroll-smooth canvas-container"
+        className={cn(
+          "w-full h-full overflow-auto p-8 canvas-container",
+          isPanning && "cursor-grabbing select-none"
+        )}
         onWheel={handleWheel}
+        onMouseDown={handleMouseDown}
+        onMouseUp={handleMouseUp}
+        onMouseMove={handleMouseMoveContainer}
+        onMouseLeave={() => {
+          setIsPanning(false);
+          setLastPanPosition(null);
+        }}
         data-testid="canvas-container"
+        style={{ 
+          scrollBehavior: isPanning ? 'auto' : 'auto'
+        }}
       >
         {/* Coordinate System Container */}
-        <div className="relative inline-block canvas-zoom">
+        <div className="relative inline-block">
           {/* Top X-axis coordinates */}
           <div className="flex ml-8 mb-1">
             {Array.from({ length: Math.ceil(canvasWidth / 10) }, (_, i) => (
@@ -203,7 +314,7 @@ export function OptimizedCanvas({
                 className="text-xs text-gray-400 text-center"
                 style={{ 
                   width: `${10 * pixelSize}px`,
-                  fontSize: `${Math.max(8, pixelSize * 0.8)}px`
+                  fontSize: `${Math.max(8, Math.min(12, pixelSize * 0.8))}px`
                 }}
               >
                 {i * 10}
@@ -222,7 +333,7 @@ export function OptimizedCanvas({
                   style={{ 
                     height: `${10 * pixelSize}px`,
                     width: '24px',
-                    fontSize: `${Math.max(8, pixelSize * 0.8)}px`
+                    fontSize: `${Math.max(8, Math.min(12, pixelSize * 0.8))}px`
                   }}
                 >
                   {i * 10}
@@ -234,12 +345,13 @@ export function OptimizedCanvas({
             <canvas
               ref={canvasRef}
               className={cn(
-                "border border-gray-400 cursor-pointer",
+                "border border-gray-400",
-                cooldownActive && "cursor-not-allowed"
+                isPanning ? "cursor-grabbing" : cooldownActive ? "cursor-not-allowed" : "cursor-pointer"
               )}
               onClick={handleCanvasClick}
               onMouseMove={handleCanvasMouseMove}
               onMouseLeave={handleCanvasMouseLeave}
+              onContextMenu={(e) => e.preventDefault()} // Verhindert Rechtsklick-Menü
               data-testid="pixel-canvas"
             />
           </div>
@@ -247,48 +359,63 @@ export function OptimizedCanvas({
       </div>
 
       {/* Zoom Controls */}
-      <div className="absolute top-4 right-4 flex flex-col gap-2 bg-white/80 p-2 rounded shadow">
+      <div className="absolute top-4 right-4 flex flex-col gap-2 bg-white/90 p-3 rounded-lg shadow-lg">
         <button
           onClick={handleZoomIn}
-          className="px-2 py-1 bg-blue-500 text-white rounded text-sm hover:bg-blue-600"
+          className="px-3 py-2 bg-blue-500 text-white rounded text-sm font-semibold hover:bg-blue-600 transition-colors"
           data-testid="button-zoom-in"
+          disabled={zoom >= 5}
         >
           +
         </button>
         <button
           onClick={handleZoomOut}
-          className="px-2 py-1 bg-blue-500 text-white rounded text-sm hover:bg-blue-600"
+          className="px-3 py-2 bg-blue-500 text-white rounded text-sm font-semibold hover:bg-blue-600 transition-colors"
           data-testid="button-zoom-out"
+          disabled={zoom <= 0.1}
         >
           -
         </button>
         <button
           onClick={handleResetZoom}
-          className="px-2 py-1 bg-gray-500 text-white rounded text-xs hover:bg-gray-600"
+          className="px-2 py-1 bg-gray-500 text-white rounded text-xs font-semibold hover:bg-gray-600 transition-colors"
           data-testid="button-zoom-reset"
         >
           100%
         </button>
+        <div className="text-xs text-gray-600 text-center font-mono">
+          {Math.round(zoom * 100)}%
+        </div>
       </div>
 
       {/* Info Display */}
-      <div className="absolute bottom-4 left-4 bg-white/80 p-3 rounded shadow text-sm">
+      <div className="absolute bottom-4 left-4 bg-white/90 p-3 rounded-lg shadow-lg text-sm">
-        <div className="text-xs text-gray-600">
+        <div className="text-xs text-gray-600 font-semibold">
-          Canvas: {canvasWidth}x{canvasHeight}
+          Canvas: {canvasWidth}×{canvasHeight}
         </div>
-        <div className="text-xs text-gray-400">
+        <div className="text-xs text-gray-500 mt-1">
-          Zoom: {Math.round(zoom * 100)}%
+          Pixel: {pixelSize}px | Zoom: {Math.round(zoom * 100)}%
         </div>
         {mouseCoords && (
-          <div className="text-xs text-green-400 mt-1">
+          <div className="text-xs text-green-600 mt-2 font-mono">
-            Mouse: ({mouseCoords.x}, {mouseCoords.y})
+            Position: ({mouseCoords.x}, {mouseCoords.y})
           </div>
         )}
         {previewPixel && !cooldownActive && (
-          <div className="text-xs text-blue-400 mt-1">
+          <div className="text-xs text-blue-600 mt-1">
             Vorschau: {selectedColor}
           </div>
         )}
+        {cooldownActive && (
+          <div className="text-xs text-red-500 mt-1 font-semibold">
+            Cooldown aktiv
+          </div>
+        )}
+        {isPanning && (
+          <div className="text-xs text-blue-500 mt-1 font-semibold">
+            Bewege Canvas (Mittlere Maustaste)
+          </div>
+        )}
       </div>
     </div>
   );

client/src/index.css

@@ -131,31 +131,49 @@
   100% { background-position: 20px 20px; }
 }
 
-/* Smooth scrolling für den gesamten Container */
+/* Canvas container optimiert für glattes Zoomen */
-.scroll-smooth {
-  scroll-behavior: smooth;
-}
-
-/* Canvas zoom transitions */
-.canvas-zoom {
-  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
-}
-
-/* Geschmeidiges Mausrad-Scrolling */
 .canvas-container {
-  scroll-behavior: smooth;
+  scroll-behavior: auto; /* Für präzises Zoom-Verhalten */
 }
 
-/* Optimierte Pixel-Hover-Effekte */
+.canvas-container:not(:hover) {
-.pixel {
+  scroll-behavior: smooth; /* Smooth nur wenn nicht gehovered */
-  transition: transform 0.15s ease-out, box-shadow 0.15s ease-out, opacity 0.1s ease-out;
 }
 
-.pixel:hover {
+/* Zoom Controls */
-  transform: scale(1.1);
+.canvas-container * {
-  z-index: 10;
+  image-rendering: pixelated;
-  position: relative;
+  image-rendering: -moz-crisp-edges;
-  box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
+  image-rendering: crisp-edges;
+}
+
+/* Optimierte Performance für große Canvas */
+.canvas-container canvas {
+  will-change: transform;
+  backface-visibility: hidden;
+}
+
+/* Smooth transitions für UI Elemente */
+.zoom-controls {
+  transition: opacity 0.2s ease, transform 0.2s ease;
+}
+
+/* Pixel-perfekte Rendering */
+canvas {
+  image-rendering: pixelated;
+  image-rendering: -moz-crisp-edges;
+  image-rendering: crisp-edges;
+}
+
+/* Verbesserte Hover-Effekte */
+.canvas-container:hover {
+  cursor: crosshair;
+}
+
+/* Info Panel Styling */
+.info-panel {
+  backdrop-filter: blur(8px);
+  border: 1px solid rgba(255, 255, 255, 0.2);
 }
 
 /* Pixel-Vorschau */

client/src/lib/config.ts

@@ -29,7 +29,7 @@ export const COLORS = [
   "#ffb470", // Beige
   "#000000", // Black
   "#515252", // Dark Gray
-  "#898d90", // Gray
+  "#898989", // Gray
   "#d4d7d9", // Light Gray
   "#ffffff", // White
 ] as const;
@@ -48,3 +48,24 @@ export function generateUserId(): string {
 export function getUsername(): string {
   return generateUserId();
 }
+
+export const API_BASE = "/api";
+
+export interface AuthStatus {
+  authenticated: boolean;
+  keycloakEnabled: boolean;
+  user?: {
+    userId: string;
+    username: string;
+  };
+}
+
+export async function getAuthStatus(): Promise<AuthStatus> {
+  try {
+    const response = await fetch(`${API_BASE}/auth/status`);
+    return await response.json();
+  } catch (error) {
+    console.error("Failed to get auth status:", error);
+    return { authenticated: false, keycloakEnabled: false };
+  }
+}

client/src/pages/canvas.tsx

@@ -11,6 +11,7 @@ import { useToast } from "@/hooks/use-toast";
 import { DEFAULT_SELECTED_COLOR, generateUserId, getUsername } from "@/lib/config";
 import { Pixel, CanvasConfig, InsertPixel, WSMessage } from "@shared/schema";
 import { apiRequest } from "@/lib/queryClient";
+import { AuthBanner } from "@/components/auth-banner";
 
 export default function CanvasPage() {
   const [selectedColor, setSelectedColor] = useState(DEFAULT_SELECTED_COLOR);
@@ -146,6 +147,7 @@ export default function CanvasPage() {
 
   return (
     <div className="h-screen flex flex-col bg-canvas-bg text-white">
+      <AuthBanner />
       {/* Header */}
       <header className="bg-panel-bg border-b border-gray-700 px-4 py-3 flex items-center justify-between">
         <div className="flex items-center space-x-4">

config.cfg

@@ -2,11 +2,11 @@
 # Ändere diese Werte um die Canvas-Einstellungen anzupassen
 
 # Canvas Dimensionen
-CANVAS_WIDTH=100
+CANVAS_WIDTH=500
-CANVAS_HEIGHT=100
+CANVAS_HEIGHT=200
 
 # Cooldown Einstellungen (in Sekunden)
-DEFAULT_COOLDOWN=5
+DEFAULT_COOLDOWN=10
 
 # Automatische Events (true/false)
 # Wenn aktiviert, gibt es keine Cooldowns
@@ -14,10 +14,16 @@ ENABLE_AUTOMATIC_EVENTS=false
 
 # Event Einstellungen
 EVENT_DURATION_MINUTES=30
-EVENT_INTERVAL_HOURS=6
+EVENT_INTERVAL_HOURS=1
+
 
-# Grid-Funktionalität wurde entfernt
 
 # Export Einstellungen
 AUTO_EXPORT_INTERVAL_SECONDS=60
 EXPORT_PATH=./exports/
+
+# Keycloak Einstellungen
+ENABLE_KEYCLOAK=false
+KEYCLOAK_REALM=rplace
+KEYCLOAK_AUTH_URL=http://localhost:8080/auth
+KEYCLOAK_CLIENT_ID=rplace-client

package.json

@@ -51,9 +51,10 @@
     "drizzle-zod": "^0.7.0",
     "embla-carousel-react": "^8.6.0",
     "express": "^4.21.2",
-    "express-session": "^1.18.1",
+    "express-session": "^1.18.2",
     "framer-motion": "^11.13.1",
     "input-otp": "^1.4.2",
+    "keycloak-connect": "^26.1.1",
     "lucide-react": "^0.453.0",
     "memorystore": "^1.6.7",
     "nanoid": "^5.1.5",

server/config.ts

@@ -11,6 +11,11 @@ interface Config {
 
   autoExportIntervalSeconds: number;
   exportPath: string;
+
+  enableKeycloak: boolean;
+  keycloakRealm: string;
+  keycloakAuthUrl: string;
+  keycloakClientId: string;
 }
 
 function parseConfigFile(): Config {
@@ -54,6 +59,18 @@ function parseConfigFile(): Config {
         case "EXPORT_PATH":
           config.exportPath = trimmedValue;
           break;
+        case "ENABLE_KEYCLOAK":
+          config.enableKeycloak = trimmedValue.toLowerCase() === "true";
+          break;
+        case "KEYCLOAK_REALM":
+          config.keycloakRealm = trimmedValue;
+          break;
+        case "KEYCLOAK_AUTH_URL":
+          config.keycloakAuthUrl = trimmedValue;
+          break;
+        case "KEYCLOAK_CLIENT_ID":
+          config.keycloakClientId = trimmedValue;
+          break;
       }
     });
     
@@ -68,6 +85,11 @@ function parseConfigFile(): Config {
 
       autoExportIntervalSeconds: config.autoExportIntervalSeconds || 60,
       exportPath: config.exportPath || "./exports/",
+
+      enableKeycloak: config.enableKeycloak || false,
+      keycloakRealm: config.keycloakRealm || "rplace",
+      keycloakAuthUrl: config.keycloakAuthUrl || "http://localhost:8080/auth",
+      keycloakClientId: config.keycloakClientId || "rplace-client",
     };
   } catch (error) {
     console.error("Error reading config file, using defaults:", error);
@@ -81,6 +103,11 @@ function parseConfigFile(): Config {
 
       autoExportIntervalSeconds: 60,
       exportPath: "./exports/",
+
+      enableKeycloak: false,
+      keycloakRealm: "rplace",
+      keycloakAuthUrl: "http://localhost:8080/auth",
+      keycloakClientId: "rplace-client",
     };
   }
 }

server/index.ts

@@ -1,11 +1,27 @@
 import express, { type Request, Response, NextFunction } from "express";
 import { registerRoutes } from "./routes";
 import { setupVite, serveStatic, log } from "./vite";
+import { setupKeycloak } from "./keycloak";
+import { config } from "./config";
 
 const app = express();
 app.use(express.json());
 app.use(express.urlencoded({ extended: false }));
 
+// Keycloak Setup
+let keycloak: any = null;
+if (config.enableKeycloak) {
+  // Set environment variables for Keycloak
+  process.env.KEYCLOAK_REALM = config.keycloakRealm;
+  process.env.KEYCLOAK_AUTH_URL = config.keycloakAuthUrl;
+  process.env.KEYCLOAK_CLIENT_ID = config.keycloakClientId;
+  
+  keycloak = setupKeycloak(app);
+  log("Keycloak authentication enabled");
+} else {
+  log("Keycloak authentication disabled");
+}
+
 app.use((req, res, next) => {
   const start = Date.now();
   const path = req.path;
@@ -60,7 +76,7 @@ app.use((req, res, next) => {
   // Other ports are firewalled. Default to 5000 if not specified.
   // this serves both the API and the client.
   // It is the only port that is not firewalled.
-  const port = parseInt(process.env.PORT || '5000', 10);
+  const port = parseInt(process.env.PORT || '5001', 10);
   server.listen({
     port,
     host: "0.0.0.0",

server/keycloak.ts

@@ -0,0 +1,56 @@
+
+import Keycloak from 'keycloak-connect';
+import session from 'express-session';
+import { type Express } from 'express';
+
+interface KeycloakConfig {
+  realm: string;
+  'auth-server-url': string;
+  'ssl-required': string;
+  resource: string;
+  'public-client': boolean;
+  'confidential-port': number;
+}
+
+// Keycloak Konfiguration aus Umgebungsvariablen oder Standard
+const keycloakConfig: KeycloakConfig = {
+  realm: process.env.KEYCLOAK_REALM || 'rplace',
+  'auth-server-url': process.env.KEYCLOAK_AUTH_URL || 'http://localhost:8080/auth',
+  'ssl-required': 'external',
+  resource: process.env.KEYCLOAK_CLIENT_ID || 'rplace-client',
+  'public-client': true,
+  'confidential-port': 0,
+};
+
+// Session Store für Keycloak
+const memoryStore = session.MemoryStore ? new session.MemoryStore() : undefined;
+
+export function setupKeycloak(app: Express) {
+  // Session Middleware
+  const sessionConfig = {
+    secret: process.env.SESSION_SECRET || 'rplace-secret-key',
+    resave: false,
+    saveUninitialized: true,
+    store: memoryStore,
+    cookie: {
+      secure: process.env.NODE_ENV === 'production',
+      httpOnly: true,
+      maxAge: 24 * 60 * 60 * 1000, // 24 Stunden
+    },
+  };
+
+  app.use(session(sessionConfig));
+
+  // Keycloak initialisieren
+  const keycloak = new Keycloak({ store: memoryStore }, keycloakConfig);
+
+  // Keycloak Middleware
+  app.use(keycloak.middleware({
+    logout: '/logout',
+    admin: '/',
+  }));
+
+  return keycloak;
+}
+
+export { keycloakConfig };

server/routes.ts

@@ -1,9 +1,42 @@
-import type { Express } from "express";
+import type { Express, Request, Response, NextFunction } from "express";
 import { createServer, type Server } from "http";
 import { WebSocketServer, WebSocket } from "ws";
 import { storage } from "./storage";
 import { insertPixelSchema, insertUserCooldownSchema, type WSMessage } from "@shared/schema";
 import { CanvasExporter } from "./export";
+import { config } from "./config";
+
+// Authentication middleware
+function requireAuth(req: Request, res: Response, next: NextFunction) {
+  if (!config.enableKeycloak) {
+    return next();
+  }
+  
+  // Check if user is authenticated via Keycloak
+  if (req.kauth && req.kauth.grant) {
+    return next();
+  }
+  
+  return res.status(401).json({ message: "Authentication required" });
+}
+
+// Get user info from Keycloak token
+function getUserFromToken(req: Request): { userId: string; username: string } {
+  if (!config.enableKeycloak || !req.kauth?.grant?.access_token) {
+    return {
+      userId: "User",
+      username: "Anonymous"
+    };
+  }
+  
+  const token = req.kauth.grant.access_token;
+  const content = token.content;
+  
+  return {
+    userId: content.sub || content.preferred_username || "User",
+    username: content.preferred_username || content.name || "User"
+  };
+}
 
 export async function registerRoutes(app: Express): Promise<Server> {
   const httpServer = createServer(app);
@@ -15,6 +48,38 @@ export async function registerRoutes(app: Express): Promise<Server> {
   const exporter = new CanvasExporter(storage);
   exporter.startAutoExport();
 
+  // Authentication Routes
+  app.get("/api/auth/status", (req, res) => {
+    if (!config.enableKeycloak) {
+      return res.json({ authenticated: false, keycloakEnabled: false });
+    }
+    
+    const isAuthenticated = req.kauth && req.kauth.grant;
+    const user = isAuthenticated ? getUserFromToken(req) : null;
+    
+    res.json({
+      authenticated: isAuthenticated,
+      keycloakEnabled: true,
+      user: user
+    });
+  });
+
+  // Login redirect
+  app.get("/login", (req, res) => {
+    if (config.enableKeycloak && req.kauth) {
+      return req.kauth.login(req, res);
+    }
+    res.redirect("/");
+  });
+
+  // Logout
+  app.get("/logout", (req, res) => {
+    if (config.enableKeycloak && req.kauth) {
+      return req.kauth.logout(req, res);
+    }
+    res.redirect("/");
+  });
+
   // API Routes
   app.get("/api/pixels", async (req, res) => {
     try {
@@ -37,9 +102,14 @@ export async function registerRoutes(app: Express): Promise<Server> {
   // Config is now read-only from file
   // Remove the POST endpoint for config updates
 
-  app.post("/api/pixels", async (req, res) => {
+  app.post("/api/pixels", requireAuth, async (req, res) => {
     try {
-      const pixelData = insertPixelSchema.parse(req.body);
+      const userInfo = getUserFromToken(req);
+      const pixelData = insertPixelSchema.parse({
+        ...req.body,
+        userId: userInfo.userId,
+        username: userInfo.username
+      });
       const config = await storage.getCanvasConfig();
       
       // Validate coordinates
@@ -50,7 +120,7 @@ export async function registerRoutes(app: Express): Promise<Server> {
       
       // Check cooldown unless events are enabled
       if (!config.enableAutomaticEvents) {
-        const cooldown = await storage.getUserCooldown(pixelData.userId);
+        const cooldown = await storage.getUserCooldown(userInfo.userId);
         if (cooldown && cooldown.cooldownEnds > new Date()) {
           return res.status(429).json({ message: "Cooldown active" });
         }
@@ -58,7 +128,7 @@ export async function registerRoutes(app: Express): Promise<Server> {
         // Set new cooldown
         const cooldownEnd = new Date(Date.now() + (config.defaultCooldown * 1000));
         await storage.setUserCooldown({
-          userId: pixelData.userId,
+          userId: userInfo.userId,
           cooldownEnds: cooldownEnd,
         });
       }

server/types/keycloak.d.ts

@@ -0,0 +1,21 @@
+
+import 'express';
+
+declare module 'express' {
+  interface Request {
+    kauth?: {
+      grant?: {
+        access_token?: {
+          content?: {
+            sub?: string;
+            preferred_username?: string;
+            name?: string;
+            email?: string;
+          };
+        };
+      };
+      login?: (req: Request, res: Response) => void;
+      logout?: (req: Request, res: Response) => void;
+    };
+  }
+}