check arena

main.js

@@ -421,10 +421,17 @@ let endUserResponse = function(req, res) {
 let getUserPermit = function(query, req, res) {
     let username = query.username;
     let password = query.password;
+    let arena = query.arena || 'entertain';
     if (playingPlayerPool.has(username)) {
         let info =  playingPlayerPool.get(username);
-        if (password == info.password)
-            res.end(JSON.stringify({ permit: true, reason: null }));
+        if (password == info.password) {
+            // There is a bug. Should check if server is an array. 
+            // But since now we have only one server for each arena..
+            if (info.address == config.servers[arena])
+                res.end(JSON.stringify({ permit: true, reason: null }));
+            else
+                res.end(JSON/stringify({ permit: false, reason: 'Wrong arena.' }))
+        }
         else
             res.end(JSON.stringify({ permit: false, reason: 'Wrong roomname.' }));
     }