source: binary-improvements/MapRendering/Web/Handlers/UserStatusHandler.cs@ 327

using System.Net;
using AllocsFixes.JSON;
using AllocsFixes.NetConnections.Servers.Web.API;

namespace AllocsFixes.NetConnections.Servers.Web.Handlers {
        public class UserStatusHandler : PathHandler {
                public UserStatusHandler (string moduleName = null) : base (moduleName) {
                }

                public override void HandleRequest (HttpListenerRequest req, HttpListenerResponse resp, WebConnection user,
                        int permissionLevel) {
                        JSONObject result = new JSONObject ();

                        result.Add ("loggedin", new JSONBoolean (user != null));
                        result.Add ("username", new JSONString (user != null ? user.SteamID.ToString () : string.Empty));

                        JSONArray perms = new JSONArray ();
                        foreach (WebPermissions.WebModulePermission perm in WebPermissions.Instance.GetModules ()) {
                                JSONObject permObj = new JSONObject ();
                                permObj.Add ("module", new JSONString (perm.module));
                                permObj.Add ("allowed",
                                        new JSONBoolean (WebPermissions.Instance.ModuleAllowedWithLevel (perm.module, permissionLevel)));
                                perms.Add (permObj);
                        }

                        result.Add ("permissions", perms);

                        WebAPI.WriteJSON (resp, result);
                }
        }
}