UI - add CSRF protection

ui/templates/login.html

@@ -9,7 +9,13 @@
 		<img src="img/logo.png" class="mb-4" style="max-width: 200px;">
 	</div>
 	<h1 class="h3 mb-3 fw-normal">Authentication required</h1>
+	{% if fail %}
+	<div class="alert alert-danger fade show text-break" role="alert">
+		Wrong username and/or password...
+	</div>
+	{% endif %}
 	<form action="login" method="POST">
+		<input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
 		<div class="form-floating">
 			<input type="text" id="username" class="form-control" name="username" placeholder="user">
 			<label for="username">Username</label>
@@ -22,5 +28,4 @@
 	</form>
 </div>
 
-
-{% endblock %}
+{% endblock %}