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/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 1908af9183d290a1a6815866ba10172d05ff56d1..ea4ac42372919722109cd85c213877b892e8fcf9 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1152,6 +1152,10 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
             int maxBookPageSize = io.papermc.paper.configuration.GlobalConfiguration.get().itemValidation.bookSize.pageMax;
             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 (String testString : pageList) {
                 int byteLength = testString.getBytes(java.nio.charset.StandardCharsets.UTF_8).length;
                 byteTotal += byteLength;
@@ -1173,7 +1177,8 @@ 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.disconnect(Component.literal("Book too large!"), org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_ACTION); // Paper - kick event cause
                 return;
             }