73983e4c16
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: 3dc4cdcd Update to Minecraft 1.14.3-pre4 88b25a8c SPIGOT-5098: Add a method to allow colored sign changes 6d913552 Update to Minecraft 1.14.3-pre4 CraftBukkit Changes: f1f33559 Update to Minecraft 1.14.3 8a3d3f49 SPIGOT-5098: Add a method to allow colored sign changes 533290e2 SPIGOT-5100: Console warning from pig zombie targeting 6dde4b9f SPIGOT-5094: Allow opening merchant for wandering traders and hide the xp bar for custom merchants 9af90077 SPIGOT-5097: Bukkit.clearRecipes() no longer working 38fa220f Fix setting game rules via the API fe3930ce Update to Minecraft 1.14.3-pre4 da071ec5 Remove outdated build delay. Spigot Changes: 4d2f30f1 Update to Minecraft 1.14.3 f16400e3 Update to Minecraft 1.14.3-pre4
55 lines
2.8 KiB
Diff
55 lines
2.8 KiB
Diff
From ed4d3806bd4c2dbb3bf90b730060219dedc26054 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Wed, 27 Feb 2019 22:18:40 -0500
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Subject: [PATCH] Limit Client Sign length more
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modified clients can send more data from the client
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to the server and it would get stored on the sign as sent.
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Mojang has a limit of 384 which is much higher than reasonable.
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the client can barely render around 16 characters as-is, but formatting
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codes can get it to be more than 16 actual length.
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Set a limit of 80 which should give an average of 16 characters 2
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sets of legacy formatting codes which should be plenty for all uses.
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This does not strip any existing data from the NBT as plugins
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may use this for storing data out of the rendered area.
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it only impacts data sent from the client.
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Set -DPaper.maxSignLength=XX to change limit or -1 to disable
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diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
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index e502e53659..c4ac559f3f 100644
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--- a/src/main/java/net/minecraft/server/PlayerConnection.java
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+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
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@@ -103,6 +103,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
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private int E;
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private int receivedMovePackets;
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private int processedMovePackets;
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+ private static final int MAX_SIGN_LINE_LENGTH = Integer.getInteger("Paper.maxSignLength", 80);
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private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit
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public PlayerConnection(MinecraftServer minecraftserver, NetworkManager networkmanager, EntityPlayer entityplayer) {
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@@ -2582,6 +2583,15 @@ public class PlayerConnection implements PacketListenerPlayIn {
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String[] lines = new String[4];
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for (int i = 0; i < astring.length; ++i) {
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+ // Paper start - cap line length - modified clients can send longer data than normal
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+ if (MAX_SIGN_LINE_LENGTH > 0 && astring[i].length() > MAX_SIGN_LINE_LENGTH) {
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+ // This handles multibyte characters as 1
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+ int offset = astring[i].codePoints().limit(MAX_SIGN_LINE_LENGTH).map(Character::charCount).sum();
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+ if (offset > astring.length) {
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+ astring[i] = astring[i].substring(0, offset);
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+ }
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+ }
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+ // Paper end
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lines[i] = SharedConstants.a(astring[i]); //Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created.
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}
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SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines);
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--
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2.22.0
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