0708fa363b
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: eb2e6578 SPIGOT-5116: Fix concurrent modification exception inside ChunkMapDistance 989f9b3d SPIGOT-4849: Fix server crash when accessing chunks during chunk load/unload/populate events f554183c SPIGOT-5171: Don't fire PlayerTeleportEvent if not actually moving 2349feb8 SPIGOT-5163: Cancelling PlayerBucketFillEvent visually removes the targeted block Spigot Changes: 9a643a6a Remove DataWatcher Locking
55 lines
2.8 KiB
Diff
55 lines
2.8 KiB
Diff
From 6f6d54f82ce1cf3de5e2febd02bcbb0278ededb3 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Wed, 27 Feb 2019 22:18:40 -0500
|
|
Subject: [PATCH] Limit Client Sign length more
|
|
|
|
modified clients can send more data from the client
|
|
to the server and it would get stored on the sign as sent.
|
|
|
|
Mojang has a limit of 384 which is much higher than reasonable.
|
|
|
|
the client can barely render around 16 characters as-is, but formatting
|
|
codes can get it to be more than 16 actual length.
|
|
|
|
Set a limit of 80 which should give an average of 16 characters 2
|
|
sets of legacy formatting codes which should be plenty for all uses.
|
|
|
|
This does not strip any existing data from the NBT as plugins
|
|
may use this for storing data out of the rendered area.
|
|
|
|
it only impacts data sent from the client.
|
|
|
|
Set -DPaper.maxSignLength=XX to change limit or -1 to disable
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
|
|
index 67b3e2c97..767acc5a7 100644
|
|
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
|
|
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
|
|
@@ -103,6 +103,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
|
|
private int E;
|
|
private int receivedMovePackets;
|
|
private int processedMovePackets;
|
|
+ private static final int MAX_SIGN_LINE_LENGTH = Integer.getInteger("Paper.maxSignLength", 80);
|
|
private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit
|
|
|
|
public PlayerConnection(MinecraftServer minecraftserver, NetworkManager networkmanager, EntityPlayer entityplayer) {
|
|
@@ -2588,6 +2589,15 @@ public class PlayerConnection implements PacketListenerPlayIn {
|
|
String[] lines = new String[4];
|
|
|
|
for (int i = 0; i < astring.length; ++i) {
|
|
+ // Paper start - cap line length - modified clients can send longer data than normal
|
|
+ if (MAX_SIGN_LINE_LENGTH > 0 && astring[i].length() > MAX_SIGN_LINE_LENGTH) {
|
|
+ // This handles multibyte characters as 1
|
|
+ int offset = astring[i].codePoints().limit(MAX_SIGN_LINE_LENGTH).map(Character::charCount).sum();
|
|
+ if (offset > astring.length) {
|
|
+ astring[i] = astring[i].substring(0, offset);
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
lines[i] = SharedConstants.a(astring[i]); //Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created.
|
|
}
|
|
SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines);
|
|
--
|
|
2.22.0
|
|
|