Add chat antiflood option

user.js

@@ -28,6 +28,8 @@ var User = function(socket, ip) {
     this.meta = {
         afk: false
     };
+    this.throttle = {};
+    this.flooded = {};
 
     this.initCallbacks();
     if(Server.announcement != null) {
@@ -35,6 +37,38 @@ var User = function(socket, ip) {
     }
 };
 
+// Throttling/cooldown
+User.prototype.noflood = function(name, hz) {
+    var time = new Date().getTime();
+    if(!(name in this.throttle)) {
+        this.throttle[name] = [time];
+        return false;
+    }
+    else if(name in this.flooded && time < this.flooded[name]) {
+        this.socket.emit("noflood", {
+            action: name,
+            msg: "You're still on cooldown!"
+        });
+        return true;
+    }
+    else {
+        this.throttle[name].push(time);
+        var diff = (time - this.throttle[name][0]) / 1000.0;
+        if(diff > 1.0) {
+            var rate = this.throttle[name].length / diff;
+            this.throttle[name] = [time];
+            if(rate > hz) {
+                this.flooded[name] = time + 5000;
+                this.socket.emit("noflood", {
+                    action: name,
+                    msg: "Stop doing that so fast!  Cooldown: 5s"
+                });
+                return true;
+            }
+            return false;
+        }
+    }
+}
 
 User.prototype.initCallbacks = function() {
     this.socket.on("disconnect", function() {
@@ -258,6 +292,7 @@ User.prototype.initCallbacks = function() {
     this.socket.on("requestAcl", function() {
         if(this.channel != null) {
             this.channel.sendACL(this);
+            this.noflood("requestAcl", 0.25);
         }
     }.bind(this));
 

www/assets/js/callbacks.js

@@ -29,6 +29,15 @@ function initCallbacks() {
             .addClass("server-msg-disconnect")
             .text("Kicked: " + data.reason)
             .appendTo($("#messagebuffer"));
+        $("#messagebuffer").scrollTop($("#messagebuffer").prop("scrollHeight"));
+    });
+
+    socket.on("noflood", function(data) {
+        $("<div/>")
+            .addClass("server-msg-disconnect")
+            .text(data.action + ": " + data.msg)
+            .appendTo($("#messagebuffer"));
+        $("#messagebuffer").scrollTop($("#messagebuffer").prop("scrollHeight"));
     });
 
     socket.on("channelNotRegistered", function() {
@@ -67,6 +76,7 @@ function initCallbacks() {
         PAGETITLE = opts.pagetitle;
         $("#opt_customcss").val(opts.customcss);
         $("#opt_customjs").val(opts.customjs);
+        $("#opt_chat_antiflood").prop("checked", opts.chat_antiflood);
         $("#customCss").remove();
         if(opts.customcss.trim() != "") {
             $("<link/>").attr("rel", "stylesheet")

www/assets/js/client.js

@@ -125,6 +125,7 @@ socket.on("connect", function() {
     $("<div/>").addClass("server-msg-reconnect")
         .text("Connected")
         .appendTo($("#messagebuffer"));
+    $("#messagebuffer").scrollTop($("#messagebuffer").prop("scrollHeight"));
     setTimeout(function() { $("#reconnect_box").remove(); }, 3000);
 });
 
@@ -377,7 +378,8 @@ $("#opt_submit").click(function() {
         voteskip_ratio: ratio,
         pagetitle: ptitle,
         customcss: css,
-        customjs: $("#opt_customjs").val()
+        customjs: $("#opt_customjs").val(),
+        chat_antiflood: $("#opt_chat_antiflood").prop("checked")
     };
     socket.emit("channelOpts", opts);
 });

www/assets/js/functions.js

@@ -16,6 +16,7 @@ function handleDisconnect() {
         .addClass("server-msg-disconnect")
         .text("Disconnected from server.  Attempting reconnection...")
         .appendTo($("#messagebuffer"));
+    $("#messagebuffer").scrollTop($("#messagebuffer").prop("scrollHeight"));
 }
 
 // Adds a user to the chatbox userlist

www/index.html

@@ -167,6 +167,11 @@
                             <label>Voteskip Ratio
                                 <input type="text" id="opt_voteskip_ratio" class="pull-right">
                             </label>
+                            <br>
+                            <label class="checkbox">
+                                <input type="checkbox" id="opt_chat_antiflood">
+                                Prevent chat flood
+                            </label>
                         </div>
 
                         <div class="span10">