PaperMC/Remapped-Spigot-Server-Patches/0088-Add-handshake-event-to-allow-plugins-to-handle-clien.patch
2021-06-11 13:56:17 +02:00

57 lines
4.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kashike <kashike@vq.lc>
Date: Wed, 13 Apr 2016 20:21:38 -0700
Subject: [PATCH] Add handshake event to allow plugins to handle client
handshaking logic themselves
diff --git a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
index 55b6412bb978abb6f8eaff83a7dd40fbc1ed8b9a..e56ab94ce65e81bb0383a1626a1790c43bd6920e 100644
--- a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
@@ -29,7 +29,7 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
// CraftBukkit end
private static final Component IGNORE_STATUS_REASON = new TextComponent("Ignoring status request");
private final MinecraftServer server;
- private final Connection connection;
+ private final Connection connection; final Connection getNetworkManager() { return this.connection; } // Paper - OBFHELPER
public ServerHandshakePacketListenerImpl(MinecraftServer server, Connection connection) {
this.server = server;
@@ -88,8 +88,35 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
this.connection.disconnect(chatmessage);
} else {
this.connection.setListener(new ServerLoginPacketListenerImpl(this.server, this.connection));
+ // Paper start - handshake event
+ boolean proxyLogicEnabled = org.spigotmc.SpigotConfig.bungee;
+ boolean handledByEvent = false;
+ // Try and handle the handshake through the event
+ if (com.destroystokyo.paper.event.player.PlayerHandshakeEvent.getHandlerList().getRegisteredListeners().length != 0) { // Hello? Can you hear me?
+ java.net.SocketAddress socketAddress = this.getNetworkManager().address;
+ String hostnameOfRemote = socketAddress instanceof java.net.InetSocketAddress ? ((java.net.InetSocketAddress) socketAddress).getHostString() : InetAddress.getLoopbackAddress().getHostAddress();
+ com.destroystokyo.paper.event.player.PlayerHandshakeEvent event = new com.destroystokyo.paper.event.player.PlayerHandshakeEvent(packet.hostName, hostnameOfRemote, !proxyLogicEnabled);
+ if (event.callEvent()) {
+ // If we've failed somehow, let the client know so and go no further.
+ if (event.isFailed()) {
+ chatmessage = new TranslatableComponent(event.getFailMessage());
+ this.getNetworkManager().send(new ClientboundLoginDisconnectPacket(chatmessage));
+ this.getNetworkManager().disconnect(chatmessage);
+ return;
+ }
+
+ if (event.getServerHostname() != null) packet.hostName = event.getServerHostname();
+ if (event.getSocketAddressHostname() != null) this.getNetworkManager().address = new java.net.InetSocketAddress(event.getSocketAddressHostname(), socketAddress instanceof java.net.InetSocketAddress ? ((java.net.InetSocketAddress) socketAddress).getPort() : 0);
+ this.getNetworkManager().spoofedUUID = event.getUniqueId();
+ this.getNetworkManager().spoofedProfile = gson.fromJson(event.getPropertiesJson(), com.mojang.authlib.properties.Property[].class);
+ handledByEvent = true; // Hooray, we did it!
+ }
+ }
+ // Don't try and handle default logic if it's been handled by the event.
+ if (!handledByEvent && proxyLogicEnabled) {
+ // Paper end
// Spigot Start
- if (org.spigotmc.SpigotConfig.bungee) {
+ //if (org.spigotmc.SpigotConfig.bungee) { // Paper - comment out, we check above!
String[] split = packet.hostName.split("\00");
if ( ( split.length == 3 || split.length == 4 ) && ( HOST_PATTERN.matcher( split[1] ).matches() ) ) {
packet.hostName = split[0];