Added function to get player ip

src/main/java/org/bukkit/craftbukkit/CraftPlayer.java

@@ -1,5 +1,7 @@
 package org.bukkit.craftbukkit;
 
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
 import net.minecraft.server.EntityPlayer;
 import net.minecraft.server.EntityPlayerMP;
 import net.minecraft.server.Packet3Chat;
@@ -28,6 +30,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return false;
     }
 
+    public InetSocketAddress getAddress() {
+        SocketAddress addr = entity.a.b.b();
+        if (addr instanceof InetSocketAddress) {
+            return (InetSocketAddress) addr;
+        } else {
+            return null;
+        }
+    }
+
     @Override
     public EntityPlayerMP getHandle() {
         return entity;