AtlasMediaGroup/TotalFreedomMod
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add patch for negative infinity and infinity attributes causing disconnect

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This commit is contained in:
Lemon
2018-07-21 21:34:34 +05:00
committed by GitHub
parent f0a9b6d747
commit 301c5b8da1
7 changed files with 422 additions and 0 deletions
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119
src/main/java/me/totalfreedom/totalfreedommod/MovementValidator.java
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@ -1,11 +1,24 @@
package me.totalfreedom.totalfreedommod;
import ca.momothereal.mojangson.ex.MojangsonParseException;
import ca.momothereal.mojangson.value.MojangsonCompound;
import ca.momothereal.mojangson.value.MojangsonValue;
import net.minecraft.server.v1_12_R1.NBTTagCompound;
import net.minecraft.server.v1_12_R1.NBTTagList;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.craftbukkit.v1_12_R1.inventory.CraftItemStack;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.player.PlayerItemHeldEvent;
import org.bukkit.event.player.PlayerLoginEvent;
import org.bukkit.event.player.PlayerMoveEvent;
import org.bukkit.event.player.PlayerTeleportEvent;
import org.bukkit.inventory.ItemStack;
import java.util.List;
import java.util.Objects;
public class MovementValidator extends FreedomService
{
@ -48,6 +61,43 @@ public class MovementValidator extends FreedomService
event.setCancelled(true);
player.teleport(player.getWorld().getSpawnLocation());
}
if (exploitItem(event.getPlayer().getInventory().getHelmet()))
{
event.getPlayer().getInventory().setHelmet(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your helmet slot.");
event.setCancelled(true);
}
if (exploitItem(event.getPlayer().getInventory().getBoots()))
{
event.getPlayer().getInventory().setBoots(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your boots slot.");
event.setCancelled(true);
}
if (exploitItem(event.getPlayer().getInventory().getLeggings()))
{
event.getPlayer().getInventory().setLeggings(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your leggings slot.");
event.setCancelled(true);
}
if (exploitItem(event.getPlayer().getInventory().getChestplate()))
{
event.getPlayer().getInventory().setChestplate(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your chestplate slot.");
event.setCancelled(true);
}
if (exploitItem(event.getPlayer().getInventory().getItemInMainHand()))
{
event.getPlayer().getInventory().setItemInMainHand(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your hand.");
event.setCancelled(true);
}
if (exploitItem(event.getPlayer().getInventory().getItemInOffHand()))
{
event.getPlayer().getInventory().setItemInOffHand(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your offhand.");
event.setCancelled(true);
}
}
@EventHandler(priority = EventPriority.HIGH)
@ -62,4 +112,73 @@ public class MovementValidator extends FreedomService
}
}
@EventHandler
public void onPlayerHoldItem(PlayerItemHeldEvent event)
{
if (exploitItem(event.getPlayer().getInventory().getItemInMainHand()))
{
event.getPlayer().getInventory().setItemInMainHand(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your hand.");
}
if (exploitItem(event.getPlayer().getInventory().getItemInOffHand()))
{
event.getPlayer().getInventory().setItemInOffHand(new ItemStack(Material.AIR));
event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your offhand.");
}
}
private Boolean exploitItem(ItemStack item)
{
net.minecraft.server.v1_12_R1.ItemStack nmsStack = CraftItemStack.asNMSCopy(item);
NBTTagList modifiers = getAttributeList(nmsStack);
MojangsonCompound compound = new MojangsonCompound();
boolean foundNegative = false;
boolean foundPositive = false;
try
{
String mod = modifiers.toString();
String fancy = ("{" + (mod.substring(1, mod.length() - 1).replace("{", "").replace("}", "")) + "}");
compound.read(fancy);
for (String key : compound.keySet())
{
if (Objects.equals(key, "Amount")) //null-safe .equals()
{
List<MojangsonValue> values = compound.get(key);
for (MojangsonValue val : values)
{
if (val.getValue().toString().equals("Infinityd"))
{
foundPositive = true;
}
if (val.getValue().toString().equals("-Infinityd"))
{
foundNegative = true;
}
}
}
}
}
catch (MojangsonParseException e)
{
e.printStackTrace();
}
return foundNegative && foundPositive;
}
private NBTTagList getAttributeList(net.minecraft.server.v1_12_R1.ItemStack stack)
{
if (stack.getTag() == null)
{
stack.setTag(new NBTTagCompound());
}
NBTTagList attr = stack.getTag().getList("AttributeModifiers", 10);
if (attr == null)
{
stack.getTag().set("AttributeModifiers", new NBTTagList());
}
return stack.getTag().getList("AttributeModifiers", 10);
}
}