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https://github.com/PaperMC/Waterfall.git
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24b7e51ed5
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 BungeeCord Changes: 8ce7a7f8 Minecraft 1.20.3 support e1462ccd Minecraft 1.20.3-rc1 support 70f346c1 Fix extra write in ScoreboardScore packet 197bf13a Minecraft 1.20.3-pre2 support
105 lines
5.1 KiB
Diff
105 lines
5.1 KiB
Diff
From 5bcf70b740e218893c47983c08cad7e9e6beb77c Mon Sep 17 00:00:00 2001
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From: Techcable <Techcable@techcable.net>
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Date: Thu, 19 May 2016 17:09:22 -0600
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Subject: [PATCH] Allow invalid packet ids for forge servers
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Some forge mods (COFH) use negative packet ids instead of plugin channels for 'reasons'.
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Vanilla servers still error on negative/invalid packets.
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Original issue: https://github.com/WaterfallMC/Waterfall-Old/issues/11
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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 d79d5e5c..250e7620 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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@@ -18,6 +18,14 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
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private final boolean server;
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@Setter
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private int protocolVersion;
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+ @Setter
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+ private boolean supportsForge = false;
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+
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+ public MinecraftDecoder(Protocol protocol, boolean server, int protocolVersion) {
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+ this.protocol = protocol;
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+ this.server = server;
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+ this.protocolVersion = protocolVersion;
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+ }
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@Override
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protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception
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@@ -36,7 +44,7 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
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{
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int packetId = DefinedPacket.readVarInt( in );
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- DefinedPacket packet = prot.createPacket( packetId, protocolVersion );
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+ DefinedPacket packet = prot.createPacket( packetId, protocolVersion, supportsForge );
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if ( packet != null )
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{
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packet.read( in, protocol, prot.getDirection(), protocolVersion );
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diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java b/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java
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index cc08447c..b55ebede 100644
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--- a/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java
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+++ b/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java
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@@ -770,14 +770,23 @@ public enum Protocol
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return protocol;
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}
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+ public boolean hasPacket(int i, boolean supportsForge) {
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+ return supportsForge || i >= 0 && i <= MAX_PACKET_ID;
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+ }
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+
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public final DefinedPacket createPacket(int id, int version)
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+ {
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+ return createPacket(id, version, true);
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+ }
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+
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+ public final DefinedPacket createPacket(int id, int version, boolean supportsForge)
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{
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ProtocolData protocolData = getProtocolData( version );
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if ( protocolData == null )
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{
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throw new BadPacketException( "Unsupported protocol version " + version );
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}
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- if ( id > MAX_PACKET_ID || id < 0 )
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+ if ( !hasPacket(id, supportsForge) )
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{
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throw new BadPacketException( "Packet with id " + id + " outside of range" );
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}
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diff --git a/proxy/src/main/java/net/md_5/bungee/ServerConnector.java b/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
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index b684df7d..4894b3ee 100644
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--- a/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
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+++ b/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
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@@ -225,6 +225,12 @@ public class ServerConnector extends PacketHandler
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public static void handleLogin(ProxyServer bungee, ChannelWrapper ch, UserConnection user, BungeeServerInfo target, ForgeServerHandler handshakeHandler, ServerConnection server, Login login) throws Exception
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{
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ServerConnectedEvent event = new ServerConnectedEvent( user, server );
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+
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+ if (server.isForgeServer() && user.isForgeUser()) {
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+ ((net.md_5.bungee.protocol.MinecraftDecoder) server.getCh().getHandle().pipeline().get(net.md_5.bungee.netty.PipelineUtils.PACKET_DECODER)).setSupportsForge(true);
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+ ((net.md_5.bungee.protocol.MinecraftDecoder) user.getCh().getHandle().pipeline().get(net.md_5.bungee.netty.PipelineUtils.PACKET_DECODER)).setSupportsForge(true);
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+ }
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+
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bungee.getPluginManager().callEvent( event );
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ch.write( BungeeCord.getInstance().registerChannels( user.getPendingConnection().getVersion() ) );
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diff --git a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
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index 9a47f2ec..b768d54a 100644
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--- a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
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+++ b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
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@@ -340,6 +340,12 @@ public abstract class EntityMap
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int packetId = DefinedPacket.readVarInt( packet );
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int packetIdLength = packet.readerIndex() - readerIndex;
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+ if (packetId < 0 || packetId > ints.length || packetId > varints.length) { // Invalid packet id
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+ // Ignore these invalid packets for compatibility reasons
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+ packet.readerIndex( readerIndex );
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+ return;
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+ }
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+
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if ( ints[packetId] )
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{
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rewriteInt( packet, oldId, newId, readerIndex + packetIdLength );
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--
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2.39.2
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