vlad.os/LuaCsForBarotraumaEP
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Spam filter

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Should help against teamgamerfood, next up might be fixing the password authentication since some people say it's ineffective.
This commit is contained in:
juanjp600
2016-08-28 09:58:30 -03:00
parent 712953cc9e
commit 88facd65de
3 changed files with 134 additions and 12 deletions
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137
Subsurface/Source/Networking/GameServer.cs
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@@ -346,6 +346,24 @@ namespace Barotrauma.Networking
if (c.FileStreamSender != null) UpdateFileTransfer(c, deltaTime);
c.ReliableChannel.Update(deltaTime);
//slowly reset spam timers
if (c.ChatSpamTimer>(float)0.0)
{
c.ChatSpamTimer -= deltaTime;
if (c.ChatSpamTimer<(float)0.0)
{
c.ChatSpamTimer = (float)0.0;
}
}
if (c.ChatSpamSpeed > (float)0.0)
{
c.ChatSpamSpeed -= deltaTime;
if (c.ChatSpamSpeed < (float)0.0)
{
c.ChatSpamSpeed = (float)0.0;
}
}
}
NetIncomingMessage inc = null;
@@ -1456,6 +1474,7 @@ namespace Barotrauma.Networking
private void ReadChatMessage(NetIncomingMessage inc)
{
Client sender = connectedClients.Find(x => x.Connection == inc.SenderConnection);
ChatMessage message = ChatMessage.ReadNetworkMessage(inc);
List<Client> recipients = new List<Client>();
@@ -1483,19 +1502,117 @@ namespace Barotrauma.Networking
recipients.Add(c);
}
AddChatMessage(message);
foreach (Client c in recipients)
//SPAM FILTER
if (sender.ChatSpamTimer > (float)0.0)
{
ReliableMessage msg = c.ReliableChannel.CreateMessage();
msg.InnerMessage.Write((byte)PacketTypes.Chatmessage);
//msg.InnerMessage.Write((byte)type);
//msg.InnerMessage.Write(message);
//player has already been spamming, stop again
recipients.Clear();
recipients.Add(sender);
ChatMessage denyMsg = ChatMessage.Create("", "You have been blocked by the spam filter. Try again after 10 seconds.", ChatMessageType.Server, null);
sender.ChatSpamTimer = (float)10.0;
SendChatMessage(denyMsg, recipients);
}
else
{
float similarity = 0; //TODO: find good way to calculate score if this isn't good enough
similarity += sender.ChatSpamSpeed; //the faster messages are being sent, the faster the filter will block
for (int i = 0; i < sender.ChatMessages.Count; i++)
{
float closeFactor = (float)1.0 / ((float)20.0 - i);
if (sender.ChatMessages[i] == message.Text)
{
//this is the exact same message
similarity += (float)1.5 * (float)message.Text.Length * closeFactor;
}
else
{
//check for similar messages
//TODO: improve so padding isn't enough to circumvent this
for (int j = 0; j < Math.Min(message.Text.Length, sender.ChatMessages[i].Length); j++)
{
bool didCheck = false;
if (message.Text[j] == sender.ChatMessages[i][j])
{
similarity += (float)3.0 * closeFactor;
didCheck = true;
}
if (j > 0 && !didCheck)
{
if (message.Text[j] == sender.ChatMessages[i][j - 1])
{
similarity += (float)2.0 * closeFactor;
didCheck = true;
}
}
if (j < Math.Min(message.Text.Length, sender.ChatMessages[i].Length) - 1 && !didCheck)
{
if (message.Text[j] == sender.ChatMessages[i][j + 1])
{
similarity += (float)2.0 * closeFactor;
didCheck = true;
}
}
if (j > 1 && !didCheck)
{
if (message.Text[j] == sender.ChatMessages[i][j - 2])
{
similarity += (float)1.0 * closeFactor;
didCheck = true;
}
}
if (j < Math.Min(message.Text.Length, sender.ChatMessages[i].Length) - 2 && !didCheck)
{
if (message.Text[j] == sender.ChatMessages[i][j + 2])
{
similarity += (float)1.0 * closeFactor;
didCheck = true;
}
}
}
}
}
message.WriteNetworkMessage(msg.InnerMessage);
if (similarity < (float)6.0)
{
sender.ChatMessages.Add(message.Text);
if (sender.ChatMessages.Count > 20)
{
sender.ChatMessages.RemoveAt(0);
}
c.ReliableChannel.SendMessage(msg, c.Connection);
}
AddChatMessage(message);
sender.ChatSpamSpeed += (float)5.0;
foreach (Client c in recipients)
{
ReliableMessage msg = c.ReliableChannel.CreateMessage();
msg.InnerMessage.Write((byte)PacketTypes.Chatmessage);
//msg.InnerMessage.Write((byte)type);
//msg.InnerMessage.Write(message);
message.WriteNetworkMessage(msg.InnerMessage);
c.ReliableChannel.SendMessage(msg, c.Connection);
}
}
else
{
sender.ChatSpamCount++;
recipients.Clear();
recipients.Add(sender);
if (sender.ChatSpamCount > 3)
{
//kick for spamming too much
KickClient(sender, false);
}
else
{
ChatMessage denyMsg = ChatMessage.Create("", "You have been blocked by the spam filter. Try again after 10 seconds.", ChatMessageType.Server, null);
sender.ChatSpamTimer = (float)10.0;
SendChatMessage(denyMsg, recipients);
}
}
}
}
public override void SendChatMessage(string message, ChatMessageType? type = null)