Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-12-15 02:50:09 +01:00
0fb8bdf0e0
Upstream has released updates that appear 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: 14883d6b SPIGOT-6078: Add SmithItemEvent and expand SmithingInventory API CraftBukkit Changes: 115244c7 SPIGOT-6078: Add SmithItemEvent and expand SmithingInventory API
55 Zeilen
3.3 KiB
Diff
55 Zeilen
3.3 KiB
Diff
From 0000000000000000000000000000000000000000 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/network/PlayerConnection.java b/src/main/java/net/minecraft/server/network/PlayerConnection.java
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index e54c06b1214091985d9e360592a7759ff45efc75..2c949e079e5de86c902b162dfdb6adffe0511448 100644
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--- a/src/main/java/net/minecraft/server/network/PlayerConnection.java
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+++ b/src/main/java/net/minecraft/server/network/PlayerConnection.java
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@@ -256,6 +256,7 @@ 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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@@ -2861,7 +2862,17 @@ public class PlayerConnection implements PacketListenerPlayIn {
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List<net.kyori.adventure.text.Component> lines = new java.util.ArrayList<>();
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for (int i = 0; i < list.size(); ++i) {
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- lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterAllowedChatCharacters(list.get(i)))); // Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created.
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+ // Paper start - cap line length - modified clients can send longer data than normal
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+ String currentLine = list.get(i);
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+ if (MAX_SIGN_LINE_LENGTH > 0 && currentLine.length() > MAX_SIGN_LINE_LENGTH) {
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+ // This handles multibyte characters as 1
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+ int offset = currentLine.codePoints().limit(MAX_SIGN_LINE_LENGTH).map(Character::charCount).sum();
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+ if (offset < currentLine.length()) {
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+ list.set(i, currentLine = currentLine.substring(0, offset));
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+ }
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+ }
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+ // Paper end
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+ lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterAllowedChatCharacters(currentLine))); // 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.at(worldserver, blockposition), this.getPlayer(), lines);
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this.server.getPluginManager().callEvent(event);
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