Waterfall/BungeeCord-Patches/0031-Dump-the-raw-hex-of-a-packet-on-a-decoding-error.patch
riku6460 a6198586d9
Updated Upstream (BungeeCord) (#549)
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

BungeeCord Changes:
15b51413 #2908: Don't frame packets for dead connections
a0f9333a Bump version to 1.16-R0.4-SNAPSHOT
287e28a7 Release 1.16-R0.3
c1522ab9 #2909: Don't serialise as array for single element contents
0af4bfdb #2905: HoverEvent getValue compat method
2020-07-19 14:26:04 +01:00

58 lines
2.5 KiB
Diff

From 5622d256e0495063202405cc950979edbd464bde Mon Sep 17 00:00:00 2001
From: Techcable <Techcable@techcable.net>
Date: Thu, 4 Aug 2016 19:30:49 -0700
Subject: [PATCH] Dump the raw hex of a packet on a decoding error
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
index 5e03e175..961887c9 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
@@ -1,7 +1,9 @@
package net.md_5.bungee.protocol;
import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelHandlerContext;
+import io.netty.handler.codec.DecoderException;
import io.netty.handler.codec.MessageToMessageDecoder;
import java.util.List;
import lombok.AllArgsConstructor;
@@ -38,13 +40,16 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
Protocol.DirectionData prot = ( server ) ? protocol.TO_SERVER : protocol.TO_CLIENT;
ByteBuf slice = in.copy(); // Can't slice this one due to EntityMap :(
+ Object packetTypeInfo = null;
try
{
int packetId = DefinedPacket.readVarInt( in );
+ packetTypeInfo = packetId;
DefinedPacket packet = prot.createPacket( packetId, protocolVersion, supportsForge );
if ( packet != null )
{
+ packetTypeInfo = packet.getClass();
packet.read( in, prot.getDirection(), protocolVersion );
if ( in.isReadable() )
@@ -58,6 +63,16 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
out.add( new PacketWrapper( packet, slice ) );
slice = null;
+ } catch (BadPacketException | IndexOutOfBoundsException e) {
+ final String packetTypeStr;
+ if (packetTypeInfo instanceof Integer) {
+ packetTypeStr = "id " + Integer.toHexString((Integer) packetTypeInfo);
+ } else if (packetTypeInfo instanceof Class) {
+ packetTypeStr = "class " + ((Class) packetTypeInfo).getSimpleName();
+ } else {
+ packetTypeStr = "unknown";
+ }
+ throw new DecoderException("Error decoding packet " + packetTypeStr + " with contents:\n" + ByteBufUtil.prettyHexDump(slice), e);
} finally
{
if ( slice != null )
--
2.25.1