Moved SFW mode to server, added HTTP header trigger.

src/web/server.js

@@ -63,6 +63,8 @@ function initServer() {
         },
     ));
 
+    app.set('view engine', 'ejs');
+
     router.use('/media', express.static(config.media.path));
     router.use(express.static('public'));
 
@@ -93,7 +95,11 @@ function initServer() {
     router.get('/api/tags/:tagId/releases', fetchTagReleases);
 
     router.get('*', (req, res) => {
-        res.sendFile(path.join(__dirname, '../../public/index.html'));
+        res.render(path.join(__dirname, '../../assets/index.ejs'), {
+            env: JSON.stringify({
+                sfw: !!req.headers.sfw || Object.prototype.hasOwnProperty.call(req.query, 'sfw'),
+            }),
+        });
     });
 
     app.use(router);