17f71ac87b
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: 70d24eb8 SPIGOT-6587: Update documentation/error of drop chance API CraftBukkit Changes: 470050ad SPIGOT-6587: Update documentation/error of drop chance API 1c39efa3 Fix Inventory#getViewers on the player inventory not returning the player first time their inventory is opened d161627d Fix PrepareItemCraftEvent#isRepair aa1fae73 SPIGOT-6586: EntityChangeBlockEvent for falling block does not cancel properly 8a04072e SPIGOT-6583: Throwing eggs doesn't make sounds Spigot Changes: f773da84 Remove redundant patch cd367234 Rebuild patches
58 lines
3.7 KiB
Diff
58 lines
3.7 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/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index 649db78f7f1e2269d46c856aff95449d5ca6114a..569528a80fdb54cb461f71f712db1e22286f155e 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -255,6 +255,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
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private int aboveGroundVehicleTickCount;
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private int receivedMovePacketCount;
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private int knownMovePacketCount;
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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 ServerGamePacketListenerImpl(MinecraftServer server, Connection connection, ServerPlayer player) {
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@@ -2866,10 +2867,20 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
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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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+ // Paper start - cap line length - modified clients can send longer data than normal
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+ net.minecraft.server.network.TextFilter.FilteredText currentLine = list.get(i);
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+ if (MAX_SIGN_LINE_LENGTH > 0 && currentLine.getRaw().length() > MAX_SIGN_LINE_LENGTH) {
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+ // This handles multibyte characters as 1
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+ int offset = currentLine.getRaw().codePoints().limit(MAX_SIGN_LINE_LENGTH).map(Character::charCount).sum();
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+ if (offset < currentLine.getRaw().length()) {
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+ list.set(i, currentLine = net.minecraft.server.network.TextFilter.FilteredText.passThrough(currentLine.getRaw().substring(0, offset))); // this will break any filtering, but filtering is NYI as of 1.17
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+ }
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+ }
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+ // Paper end
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if (this.player.isTextFilteringEnabled()) {
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- lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterText(list.get(i).getFiltered())));
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+ lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterText(currentLine.getFiltered())));
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} else {
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- lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterText(list.get(i).getRaw())));
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+ lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterText(currentLine.getRaw())));
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}
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}
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SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.player.getBukkitEntity(), lines);
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