papermc/Spigot-API-Patches/0044-IllegalPacketEvent.patch
Spottedleaf 5c7081fecc Update upstream & fix some chunk related issues (#2177)
* Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
45690fe9 SPIGOT-5047: Correct slot types for 1.14 inventories

CraftBukkit Changes:
4090d01f SPIGOT-5047: Correct slot types for 1.14 inventories
e8c08362 SPIGOT-5046: World#getLoadedChunks returning inaccessible cached chunks.
d445af3b SPIGOT-5067: Add item meta for 1.14 spawn eggs

* Bring Chunk load checks in-line with spigot

As of the last upstream merge spigot now checks ticket level status
when returning loaded chunks for a world from api. Now our checks
will respect that decision.

* Fix spawn ticket levels

Vanilla would keep the inner chunks of spawn available for ticking,
however my changes made all chunks non-ticking. Resolve by changing
ticket levels for spawn chunks inside the border to respect this
behavior.


* Make World#getChunkIfLoadedImmediately return only entity ticking chunks

Mojang appears to be using chunks with level > 33 (non-ticking chunks)
as cached chunks and not actually loaded chunks.

* Bring all loaded checks in line with spigot

Loaded chunks must be at least border  chunks, or level <= 33
2019-06-14 03:27:40 +01:00

88 lines
2.6 KiB
Diff

From a8f5ece74e38bb84395fa50e72af2d7ecb6fb1c9 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 4 Dec 2016 01:19:14 -0500
Subject: [PATCH] IllegalPacketEvent
Fire an event when an illegal packet is received to let plugins handle it
Lets plugins change the kick message and if it should kick or not.
diff --git a/src/main/java/com/destroystokyo/paper/event/player/IllegalPacketEvent.java b/src/main/java/com/destroystokyo/paper/event/player/IllegalPacketEvent.java
new file mode 100644
index 000000000..37a17f0bb
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/player/IllegalPacketEvent.java
@@ -0,0 +1,70 @@
+package com.destroystokyo.paper.event.player;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerEvent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class IllegalPacketEvent extends PlayerEvent {
+ @Nullable private final String type;
+ @Nullable private final String ex;
+ @Nullable private String kickMessage;
+ private boolean shouldKick = true;
+
+ public IllegalPacketEvent(@NotNull Player player, @Nullable String type, @Nullable String kickMessage, @NotNull Exception e) {
+ super(player);
+ this.type = type;
+ this.kickMessage = kickMessage;
+ this.ex = e.getMessage();
+ }
+
+ public boolean isShouldKick() {
+ return shouldKick;
+ }
+
+ public void setShouldKick(boolean shouldKick) {
+ this.shouldKick = shouldKick;
+ }
+
+ @Nullable
+ public String getKickMessage() {
+ return kickMessage;
+ }
+
+ public void setKickMessage(@Nullable String kickMessage) {
+ this.kickMessage = kickMessage;
+ }
+
+ @Nullable
+ public String getType() {
+ return type;
+ }
+
+ @Nullable
+ public String getExceptionMessage() {
+ return ex;
+ }
+
+ private static final HandlerList handlers = new HandlerList();
+
+ @NotNull
+ public HandlerList getHandlers() {
+ return handlers;
+ }
+
+ @NotNull
+ public static HandlerList getHandlerList() {
+ return handlers;
+ }
+
+ public static void process(@NotNull Player player, @Nullable String type, @Nullable String kickMessage, @NotNull Exception exception) {
+ IllegalPacketEvent event = new IllegalPacketEvent(player, type, kickMessage, exception);
+ event.callEvent();
+ if (event.shouldKick) {
+ player.kickPlayer(kickMessage);
+ }
+ Bukkit.getLogger().severe(player.getName() + "/" + type + ": " + exception.getMessage());
+ }
+}
--
2.21.0