Use async bcrypt operations and clarify SQL placeholder construction

routes/auth.js

@@ -30,7 +30,12 @@ router.post('/register', (req, res) => {
 			return res.status(409).json({ success: false, message: "Username is already taken" });
 		}
 
-		const hash = bcrypt.hashSync(password, 10);
+		bcrypt.hash(password, 10, (err, hash) => {
+			if (err) {
+				console.error('Failed to hash password:', err.message);
+				return res.status(500).json({ success: false, message: "Internal server error" });
+			}
+
 			db.run(`INSERT INTO users (username, password) VALUES (?, ?)`, [username, hash], function (err) {
 				if (err) {
 					console.error('Failed to create user:', err.message);
@@ -42,6 +47,7 @@ router.post('/register', (req, res) => {
 				res.json({ success: true, user: { id: this.lastID, username } });
 			});
 		});
+	});
 });
 
 router.post('/login', (req, res) => {
@@ -57,7 +63,17 @@ router.post('/login', (req, res) => {
 			return res.status(500).json({ success: false, message: "Internal server error" });
 		}
 
-		if (!user || !bcrypt.compareSync(password, user.password)) {
+		if (!user) {
+			return res.status(401).json({ success: false, message: "Invalid username or password" });
+		}
+
+		bcrypt.compare(password, user.password, (err, matches) => {
+			if (err) {
+				console.error('Failed to verify password:', err.message);
+				return res.status(500).json({ success: false, message: "Internal server error" });
+			}
+
+			if (!matches) {
 				return res.status(401).json({ success: false, message: "Invalid username or password" });
 			}
 
@@ -65,6 +81,7 @@ router.post('/login', (req, res) => {
 			req.session.username = user.username;
 			res.json({ success: true, user: { id: user.id, username: user.username } });
 		});
+	});
 });
 
 router.post('/logout', (req, res) => {

routes/dashboard.js

@@ -105,6 +105,7 @@ router.delete('/places/:placeId', loadOwnedPlace, (req, res) => {
 		const apIds = accessPoints.map(ap => ap.id);
 		const deleteAclAndAp = (cb) => {
 			if (apIds.length === 0) return cb();
+			// Build a `?` placeholder per id so all values stay parameterized; apIds never contains raw user input here.
 			const placeholders = apIds.map(() => '?').join(',');
 			db.run(`DELETE FROM acl WHERE accessPoint IN (${placeholders})`, apIds, (err) => {
 				if (err) return cb(err);