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25 lines
1.7 KiB
Diff
25 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sat, 7 May 2022 14:58:53 -0700
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Subject: [PATCH] Do not accept invalid client settings
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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 19f49465cfc80c1cf36755f24aa246e0656da75a..19f13d845467364a25417ac8fd6404f16e18eaa2 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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@@ -3248,6 +3248,13 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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@Override
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public void handleClientInformation(ServerboundClientInformationPacket packet) {
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PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
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+ // Paper start - do not accept invalid information
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+ if (packet.information().viewDistance() < 0) {
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+ LOGGER.warn("Disconnecting " + this.player.getScoreboardName() + " for invalid view distance: " + packet.information().viewDistance());
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+ this.disconnect(Component.literal("Invalid client settings"), org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_ACTION);
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+ return;
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+ }
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+ // Paper end - do not accept invalid information
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this.player.updateOptions(packet.information());
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this.connection.channel.attr(io.papermc.paper.adventure.PaperAdventure.LOCALE_ATTRIBUTE).set(net.kyori.adventure.translation.Translator.parseLocale(packet.information().language())); // Paper
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}
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