From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: kashike 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 5dedfeaa6cc683b5fc6c21f842265b8aea64fa58..ce51bde4db395ff30c7d75e3badd68d6395fa40f 100644 --- a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java @@ -89,9 +89,44 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL this.connection.disconnect(ichatmutablecomponent); } else { this.connection.setListener(new ServerLoginPacketListenerImpl(this.server, this.connection)); + // Paper start - PlayerHandshakeEvent + 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.connection.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()) { + Component component = io.papermc.paper.adventure.PaperAdventure.asVanilla(event.failMessage()); + this.connection.send(new ClientboundLoginDisconnectPacket(component)); + this.connection.disconnect(component); + return; + } + + if (event.getServerHostname() != null) { + // change hostname + packet = new ClientIntentionPacket( + packet.protocolVersion(), + event.getServerHostname(), + packet.port(), + packet.intention() + ); + } + if (event.getSocketAddressHostname() != null) this.connection.address = new java.net.InetSocketAddress(event.getSocketAddressHostname(), socketAddress instanceof java.net.InetSocketAddress ? ((java.net.InetSocketAddress) socketAddress).getPort() : 0); + this.connection.spoofedUUID = event.getUniqueId(); + this.connection.spoofedProfile = gson.fromJson(event.getPropertiesJson(), com.mojang.authlib.properties.Property[].class); + handledByEvent = true; // Hooray, we did it! + } + } // Spigot Start String[] split = packet.hostName().split("\00"); - if (org.spigotmc.SpigotConfig.bungee) { + // Don't try and handle default logic if it's been handled by the event. + if (!handledByEvent && proxyLogicEnabled) { + // Paper end - PlayerHandshakeEvent + // if (org.spigotmc.SpigotConfig.bungee) { // Paper - comment out, we check above! if ( ( split.length == 3 || split.length == 4 ) && ( ServerHandshakePacketListenerImpl.HOST_PATTERN.matcher( split[1] ).matches() ) ) { this.connection.hostname = split[0]; this.connection.address = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) this.connection.getRemoteAddress()).getPort());