Paper/Spigot-Server-Patches/0321-Fix-PlayerEditBookEvent.patch
Mariell Hoversholm 654b792caf Updated Upstream (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

CraftBukkit Changes:
a339310c #755: Fix NPE when calling getInventory() for virtual EnderChests
2577f9bf Increase outdated build delay
1dabfdc8 #754: Fix pre-1.16 serialized SkullMeta being broken on 1.16+, losing textures
2020-09-27 11:04:51 -04:00

31 lines
1.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Michael Himing <mhiming@gmail.com>
Date: Sun, 16 Dec 2018 13:07:33 +1100
Subject: [PATCH] Fix PlayerEditBookEvent
- Updating book writing (not signing) mutated the original item, making
it impossible to properly cancel the event or modify the book meta
- When the event was cancelled, the client's book would keep the
cancelled writing
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index b6db6b7980e3d90b0b5f9bc3758adebc9625c8dc..5fa1d0756d6e47a360dbdac89235941be67c4692 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -885,9 +885,11 @@ public class PlayerConnection implements PacketListenerPlayIn {
itemstack2.a("pages", (NBTBase) nbttaglist);
this.player.a(packetplayinbedit.d(), CraftEventFactory.handleEditBookEvent(player, enumitemslot, itemstack1, itemstack2)); // CraftBukkit
} else {
- ItemStack old = itemstack1.cloneItemStack(); // CraftBukkit
- itemstack1.a("pages", (NBTBase) itemstack.getTag().getList("pages", 8));
- CraftEventFactory.handleEditBookEvent(player, enumitemslot, old, itemstack1); // CraftBukkit
+ // Paper start - dont mutate players current item, set it from the event
+ ItemStack newBook = itemstack1.cloneItemStack();
+ newBook.getOrCreateTagAndSet("pages", (NBTBase)itemstack.getTag().getList("pages", 8));
+ this.player.setSlot(enumitemslot, CraftEventFactory.handleEditBookEvent(player, enumitemslot, itemstack1, newBook));
+ // Paper end
}
}