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Allow enabling sand duping (#10191)

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Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
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Owen 2024-03-03 17:05:34 -05:00 • committed by GitHub
parent b21eb4d9a4
commit 89d51d5f29
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GPG key ID: B5690EEEBB952194
673 changed files with 157 additions and 189 deletions
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53
patches/server/0494-Add-sendOpLevel-API.patch Normal file
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@ -0,0 +1,53 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Tue, 29 Dec 2020 15:03:03 +0100
Subject: [PATCH] Add sendOpLevel API
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 6fed863a0400ba23e0e299b0f0a0f28af19fa226..65c11774b9e3c724b5ac67a557bd84efcd53fbab 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -1101,6 +1101,11 @@ public abstract class PlayerList {
}
private void sendPlayerPermissionLevel(ServerPlayer player, int permissionLevel) {
+ // Paper start - Add sendOpLevel API
+ this.sendPlayerPermissionLevel(player, permissionLevel, true);
+ }
+ public void sendPlayerPermissionLevel(ServerPlayer player, int permissionLevel, boolean recalculatePermissions) {
+ // Paper end - Add sendOpLevel API
if (player.connection != null) {
byte b0;
@@ -1115,8 +1120,10 @@ public abstract class PlayerList {
player.connection.send(new ClientboundEntityEventPacket(player, b0));
}
+ if (recalculatePermissions) { // Paper - Add sendOpLevel API
player.getBukkitEntity().recalculatePermissions(); // CraftBukkit
this.server.getCommands().sendCommands(player);
+ } // Paper - Add sendOpLevel API
}
public boolean isWhiteListed(GameProfile profile) {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index f9188664f868c0c55c92c0ec7ca43204d267b91e..f4cf8cc4cf085c621cc0d3e71f3ad10b8ef9f15a 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -597,6 +597,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
}
// Paper end
+ // Paper start - Add sendOpLevel API
+ @Override
+ public void sendOpLevel(byte level) {
+ Preconditions.checkArgument(level >= 0 && level <= 4, "Level must be within [0, 4]");
+
+ this.getHandle().getServer().getPlayerList().sendPlayerPermissionLevel(this.getHandle(), level, false);
+ }
+ // Paper end - Add sendOpLevel API
+
@Override
public void setCompassTarget(Location loc) {
Preconditions.checkArgument(loc != null, "Location cannot be null");