From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Wed, 23 Dec 2020 00:43:59 -0600
Subject: [PATCH] PlayerBookTooLargeEvent


diff --git a/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 6b460227a12ba275c02243a1fbafb87e3845cb14..2e714a4faf07e7ca18fa073ff6660c5d4f377507 100644
--- a/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1256,6 +1256,10 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
             final int maxBookPageSize = pageMax.intValue();
             final double multiplier = Math.clamp(io.papermc.paper.configuration.GlobalConfiguration.get().itemValidation.bookSize.totalMultiplier, 0.3D, 1D);
             long byteAllowed = maxBookPageSize;
+            // Purpur start
+            int slot = packet.slot();
+            ItemStack itemstack = Inventory.isHotbarSlot(slot) || slot == Inventory.SLOT_OFFHAND ? this.player.getInventory().getItem(slot) : ItemStack.EMPTY;
+            // Purpur end
             for (final String page : pageList) {
                 final int byteLength = page.getBytes(java.nio.charset.StandardCharsets.UTF_8).length;
                 byteTotal += byteLength;
@@ -1280,7 +1284,8 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
             }
 
             if (byteTotal > byteAllowed) {
-                ServerGamePacketListenerImpl.LOGGER.warn("{} tried to send a book too large. Book size: {} - Allowed: {} - Pages: {}", this.player.getScoreboardName(), byteTotal, byteAllowed, pageList.size());
+                ServerGamePacketListenerImpl.LOGGER.warn("{} tried to send too large of a book. Book size: {} - Allowed: {} - Pages: {}", this.player.getScoreboardName(), byteTotal, byteAllowed, pageList.size());
+                org.purpurmc.purpur.event.player.PlayerBookTooLargeEvent event = new org.purpurmc.purpur.event.player.PlayerBookTooLargeEvent(player.getBukkitEntity(), itemstack.asBukkitCopy()); if (event.shouldKickPlayer()) // Purpur
                 this.disconnectAsync(Component.literal("Book too large!"), org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_ACTION); // Paper - kick event cause // Paper - add proper async disconnect
                 return;
             }