Preventing signs with blocked IP addresses.

src/me/ryanhamshire/GriefPrevention/BlockEventHandler.java

@@ -121,6 +121,13 @@ public class BlockEventHandler implements Listener
 		
 		String signMessage = lines.toString();
 		
+		//prevent signs with blocked IP addresses 
+		if(!player.hasPermission("griefprevention.spam") && GriefPrevention.instance.containsBlockedIP(signMessage))
+        {
+            event.setCancelled(true);
+            return;
+        }
+		
 		//if not empty and wasn't the same as the last sign, log it and remember it for later
 		PlayerData playerData = this.dataStore.getPlayerData(player.getUniqueId());
 		if(notEmpty && playerData.lastMessage != null && !playerData.lastMessage.equals(signMessage))

src/me/ryanhamshire/GriefPrevention/GriefPrevention.java

@@ -28,6 +28,8 @@ import java.util.UUID;
 import java.util.Vector;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Logger;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import net.milkbowl.vault.economy.Economy;
 
@@ -2698,4 +2700,23 @@ public class GriefPrevention extends JavaPlugin
         
         return result;
     }
+
+    public boolean containsBlockedIP(String message)
+    {
+        message = message.replace("\r\n", "");
+        Pattern ipAddressPattern = Pattern.compile("([0-9]{1,3}\\.){3}[0-9]{1,3}");
+        Matcher matcher = ipAddressPattern.matcher(message);
+        
+        //if it looks like an IP address
+        if(matcher.find())
+        {
+            //and it's not in the list of allowed IP addresses
+            if(!GriefPrevention.instance.config_spam_allowedIpAddresses.contains(matcher.group()))
+            {
+                return true;
+            }
+        }
+        
+        return false;
+    }
 }

src/me/ryanhamshire/GriefPrevention/PlayerEventHandler.java

@@ -246,25 +246,17 @@ class PlayerEventHandler implements Listener
 		//filter IP addresses
 		if(!muted)
 		{
-			Pattern ipAddressPattern = Pattern.compile("([0-9]{1,3}\\.){3}[0-9]{1,3}");
-			Matcher matcher = ipAddressPattern.matcher(message);
-			
-			//if it looks like an IP address
-			if(matcher.find())
+			if(GriefPrevention.instance.containsBlockedIP(message))
 			{
-				//and it's not in the list of allowed IP addresses
-				if(!GriefPrevention.instance.config_spam_allowedIpAddresses.contains(matcher.group()))
-				{
-					//log entry
-					GriefPrevention.AddLogEntry("Muted IP address from " + player.getName() + ": " + message);
-					
-					//spam notation
-					playerData.spamCount+=5;
-					spam = true;
-					
-					//block message
-					muted = true;
-				}
+				//log entry
+				GriefPrevention.AddLogEntry("Muted IP address from " + player.getName() + ": " + message);
+				
+				//spam notation
+				playerData.spamCount+=5;
+				spam = true;
+				
+				//block message
+				muted = true;
 			}
 		}