1 files changed, 96 insertions, 0 deletions
diff --git a/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/chat/SpamCheck.java b/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/chat/SpamCheck.java
new file mode 100644
index 000000000..8bf893091
--- /dev/null
+++ b/EssentialsAntiCheat/src/com/earth2me/essentials/anticheat/checks/chat/SpamCheck.java
@@ -0,0 +1,96 @@
+package com.earth2me.essentials.anticheat.checks.chat;
+
+import com.earth2me.essentials.anticheat.NoCheat;
+import com.earth2me.essentials.anticheat.NoCheatPlayer;
+import com.earth2me.essentials.anticheat.actions.ParameterName;
+import com.earth2me.essentials.anticheat.data.Statistics.Id;
+import java.util.Locale;
+
+
+/**
+ * The SpamCheck will count messages and commands over a short timeframe to see if the player tried to send too many of
+ * them
+ *
+ */
+public class SpamCheck extends ChatCheck
+{
+	public SpamCheck(NoCheat plugin)
+	{
+		super(plugin, "chat.spam");
+	}
+
+	public boolean check(NoCheatPlayer player, ChatData data, ChatConfig cc)
+	{
+
+		boolean cancel = false;
+		// Maybe it's a command and on the whitelist
+		for (String s : cc.spamWhitelist)
+		{
+			if (data.message.startsWith(s))
+			{
+				// It is
+				return false;
+			}
+		}
+
+		int commandLimit = cc.spamCommandLimit;
+		int messageLimit = cc.spamMessageLimit;
+		long timeframe = cc.spamTimeframe;
+
+		final long time = System.currentTimeMillis();
+
+		// Has enough time passed? Then reset the counters
+		if (data.spamLastTime + timeframe <= time)
+		{
+			data.spamLastTime = time;
+			data.messageCount = 0;
+			data.commandCount = 0;
+		}
+		// Security check, if the system time changes
+		else if (data.spamLastTime > time)
+		{
+			data.spamLastTime = Integer.MIN_VALUE;
+		}
+
+		// Increment appropriate counter
+		if (data.message.startsWith("/"))
+		{
+			data.commandCount++;
+		}
+		else
+		{
+			data.messageCount++;
+		}
+
+		// Did the player go over the limit on at least one of the counters?
+		if (data.messageCount > messageLimit || data.commandCount > commandLimit)
+		{
+
+			// Set the vl as the number of messages above the limit and
+			// increment statistics
+			data.spamVL = Math.max(0, data.messageCount - messageLimit);
+			data.spamVL += Math.max(0, data.commandCount - commandLimit);
+			incrementStatistics(player, Id.CHAT_SPAM, 1);
+
+			// Execute whatever actions are associated with this check and the
+			// violation level and find out if we should cancel the event
+			cancel = executeActions(player, cc.spamActions, data.spamVL);
+		}
+
+		return cancel;
+	}
+
+	@Override
+	public String getParameter(ParameterName wildcard, NoCheatPlayer player)
+	{
+
+		if (wildcard == ParameterName.VIOLATIONS)
+		{
+			return String.format(Locale.US, "%d", getData(player).spamVL);
+		}
+		else
+		{
+			return super.getParameter(wildcard, player);
+		}
+	}
+}