added more logic into servlets

jams-server/src/main/java/net/jami/jams/server/core/TomcatLauncher.java

@@ -44,6 +44,8 @@ public class TomcatLauncher {
 
         }
         context.setResources(resources);
+        //We always go to login by default.
+        context.addWelcomeFile("web/login");
         try {
             tomcat.start();
             tomcat.getServer().await();

jams-server/src/main/java/net/jami/jams/server/servlets/web/ChangePasswordServlet.java

+package net.jami.jams.server.servlets.web;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.annotation.WebServlet;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+import java.io.IOException;
+
+@WebServlet("/web/changePassword")
+public class ChangePasswordServlet extends HttpServlet {
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        super.doGet(req, resp);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        super.doPost(req, resp);
+    }
+}

jams-server/src/main/java/net/jami/jams/server/servlets/web/LoginServlet.java

@@ -20,6 +20,10 @@ public class LoginServlet extends HttpServlet {
 
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        if(WebAppFilter.authenticatedUsers.containsKey(req.getSession())){
+            resp.sendRedirect("/index");
+            return;
+        }
         if(Server.isInstalled.get()) req.getRequestDispatcher("/login.jsp").forward(req,resp);
         else req.getRequestDispatcher("/register.jsp").forward(req,resp);
     }