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Readded spam filter

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This commit is contained in:
Regalis
2017-06-01 19:37:08 +03:00
parent 6cc4f7c575
commit 5455af24d7
3 changed files with 65 additions and 14 deletions
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56
Subsurface/Source/Networking/ChatMessage.cs
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@@ -134,23 +134,65 @@ namespace Barotrauma.Networking
msg.Write(Text);
}
static public void ServerRead(NetIncomingMessage msg, Client c)
public static void ServerRead(NetIncomingMessage msg, Client c)
{
UInt16 ID = msg.ReadUInt16();
string txt = msg.ReadString();
if (txt.Length > MaxLength)
{
txt = txt.Substring(0, MaxLength);
}
if (NetIdUtils.IdMoreRecent(ID, c.lastSentChatMsgID))
if (!NetIdUtils.IdMoreRecent(ID, c.lastSentChatMsgID)) return;
c.lastSentChatMessages.Add(txt);
if (c.lastSentChatMessages.Count > 10)
{
//this chat message is new to the server
GameMain.Server.SendChatMessage(txt, null, c);
//GameMain.Server.AddChatMessage(txt, ChatMessageType.Default, c.name);
c.lastSentChatMsgID = ID;
c.lastSentChatMessages.RemoveRange(0, c.lastSentChatMessages.Count-10);
}
c.lastSentChatMsgID = ID;
//SPAM FILTER
if (c.ChatSpamTimer > 0.0f)
{
//player has already been spamming, stop again
ChatMessage denyMsg = ChatMessage.Create("", "You have been blocked by the spam filter. Try again after 10 seconds.", ChatMessageType.Server, null);
c.ChatSpamTimer = 10.0f;
GameMain.Server.SendChatMessage(denyMsg, c);
return;
}
float similarity = 0.0f;
for (int i = 0; i < c.lastSentChatMessages.Count; i++)
{
float closeFactor = 1.0f / (c.lastSentChatMessages.Count - i);
int levenshteinDist = ToolBox.LevenshteinDistance(txt, c.lastSentChatMessages[i]);
similarity += Math.Max((txt.Length - levenshteinDist) / (float)txt.Length * closeFactor, 0.0f);
}
if (similarity + c.ChatSpamSpeed > 5.0f)
{
c.ChatSpamCount++;
if (c.ChatSpamCount > 3)
{
//kick for spamming too much
GameMain.Server.KickClient(c);
}
else
{
ChatMessage denyMsg = ChatMessage.Create("", "You have been blocked by the spam filter. Try again after 10 seconds.", ChatMessageType.Server, null);
c.ChatSpamTimer = 10.0f;
GameMain.Server.SendChatMessage(denyMsg, c);
}
return;
}
c.ChatSpamSpeed += similarity;
GameMain.Server.SendChatMessage(txt, null, c);
}
public void ServerWrite(NetOutgoingMessage msg, Client c)