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https://github.com/PaperMC/Waterfall.git
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50 lines
2.1 KiB
Diff
50 lines
2.1 KiB
Diff
From 32f56cb02f7336ed609e181e5bb582fa5a9d0d79 Mon Sep 17 00:00:00 2001
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From: foss-mc <69294560+foss-mc@users.noreply.github.com>
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Date: Wed, 16 Dec 2020 18:10:30 +0800
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Subject: [PATCH] Packet Checks
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diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
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index 01d35f41a..ec07ae6fd 100644
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--- a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
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+++ b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
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@@ -38,6 +38,19 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
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}
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Protocol.DirectionData prot = ( server ) ? protocol.TO_SERVER : protocol.TO_CLIENT;
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+
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+ // FlameCord - Check size before decoding
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+ if (prot == protocol.TO_SERVER) {
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+ final int readableBytes = in.readableBytes();
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+ final int capacity = in.capacity();
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+
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+ if (readableBytes > 2097152) {
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+ throw new FastDecoderException("Error decoding packet with too many readableBytes: " + readableBytes);
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+ } else if (capacity > 2097152) {
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+ throw new FastDecoderException("Error decoding packet with too big capacity: " + capacity);
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+ }
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+ }
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+
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ByteBuf slice = in.copy(); // Can't slice this one due to EntityMap :(
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Object packetTypeInfo = null;
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diff --git a/proxy/src/main/java/net/md_5/bungee/netty/HandlerBoss.java b/proxy/src/main/java/net/md_5/bungee/netty/HandlerBoss.java
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index f8d6becd6..c0e4791f9 100644
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--- a/proxy/src/main/java/net/md_5/bungee/netty/HandlerBoss.java
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+++ b/proxy/src/main/java/net/md_5/bungee/netty/HandlerBoss.java
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@@ -78,6 +78,11 @@ public class HandlerBoss extends ChannelInboundHandlerAdapter
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception
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{
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+ // FlameCord - Return if channel isn't active
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+ if (!ctx.channel().isActive()) {
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+ return;
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+ }
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+
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if ( msg instanceof HAProxyMessage )
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{
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HAProxyMessage proxy = (HAProxyMessage) msg;
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--
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2.32.0.windows.1
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