Paper/Spigot-Server-Patches/0171-Expose-client-protocol-version-and-virtual-host.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Minecrell <minecrell@minecrell.net>
Date: Tue, 10 Oct 2017 18:45:20 +0200
Subject: [PATCH] Expose client protocol version and virtual host
diff --git a/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java b/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java
new file mode 100644
2021-03-16 14:04:28 +01:00
index 0000000000000000000000000000000000000000..8a716c1647aa29906be26ac262e93ebd2c1adfaa
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java
@@ -0,0 +1,50 @@
+package com.destroystokyo.paper.network;
+
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+import net.minecraft.network.NetworkManager;
+
+import java.net.InetSocketAddress;
+
+import javax.annotation.Nullable;
+
+public class PaperNetworkClient implements NetworkClient {
+
+ private final NetworkManager networkManager;
+
+ PaperNetworkClient(NetworkManager networkManager) {
+ this.networkManager = networkManager;
+ }
+
+ @Override
+ public InetSocketAddress getAddress() {
+ return (InetSocketAddress) this.networkManager.getSocketAddress();
+ }
+
+ @Override
+ public int getProtocolVersion() {
+ return this.networkManager.protocolVersion;
+ }
+
+ @Nullable
+ @Override
+ public InetSocketAddress getVirtualHost() {
+ return this.networkManager.virtualHost;
+ }
+
+ public static InetSocketAddress prepareVirtualHost(String host, int port) {
+ int len = host.length();
+
+ // FML appends a marker to the host to recognize FML clients (\0FML\0)
+ int pos = host.indexOf('\0');
+ if (pos >= 0) {
+ len = pos;
+ }
+
+ // When clients connect with a SRV record, their host contains a trailing '.'
+ if (len > 0 && host.charAt(len - 1) == '.') {
+ len--;
+ }
+
+ return InetSocketAddress.createUnresolved(host.substring(0, len), port);
+ }
+
+}
diff --git a/src/main/java/net/minecraft/network/NetworkManager.java b/src/main/java/net/minecraft/network/NetworkManager.java
index f093b465b868e6003bb2b5ee634a624b5b054493..60e4a4aa3854aaeb250d1318f2f25cf3591ea1d3 100644
--- a/src/main/java/net/minecraft/network/NetworkManager.java
+++ b/src/main/java/net/minecraft/network/NetworkManager.java
@@ -70,6 +70,10 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
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private float s;
private int t;
private boolean u;
+ // Paper start - NetworkClient implementation
+ public int protocolVersion;
+ public java.net.InetSocketAddress virtualHost;
+ // Paper end
public NetworkManager(EnumProtocolDirection enumprotocoldirection) {
this.h = enumprotocoldirection;
diff --git a/src/main/java/net/minecraft/network/protocol/handshake/PacketHandshakingInSetProtocol.java b/src/main/java/net/minecraft/network/protocol/handshake/PacketHandshakingInSetProtocol.java
index b290ddfbc19aed3e44169281c3dae5429dac0062..14c002376540d2039fc2fe2ef746e53471a9cb08 100644
--- a/src/main/java/net/minecraft/network/protocol/handshake/PacketHandshakingInSetProtocol.java
+++ b/src/main/java/net/minecraft/network/protocol/handshake/PacketHandshakingInSetProtocol.java
@@ -39,6 +39,7 @@ public class PacketHandshakingInSetProtocol implements Packet<PacketHandshakingI
return this.d;
}
+ public int getProtocolVersion() { return c(); } // Paper - OBFHELPER
public int c() {
return this.a;
}
diff --git a/src/main/java/net/minecraft/server/network/HandshakeListener.java b/src/main/java/net/minecraft/server/network/HandshakeListener.java
index 5047a742d2e6a9749aa7d37e761d023a3425944b..24486bc7290ec6ef1e00a94e289ca35b804ab172 100644
--- a/src/main/java/net/minecraft/server/network/HandshakeListener.java
+++ b/src/main/java/net/minecraft/server/network/HandshakeListener.java
@@ -149,6 +149,10 @@ public class HandshakeListener implements PacketHandshakingInListener {
throw new UnsupportedOperationException("Invalid intention " + packethandshakinginsetprotocol.b());
}
+ // Paper start - NetworkClient implementation
+ this.getNetworkManager().protocolVersion = packethandshakinginsetprotocol.getProtocolVersion();
+ this.getNetworkManager().virtualHost = com.destroystokyo.paper.network.PaperNetworkClient.prepareVirtualHost(packethandshakinginsetprotocol.hostname, packethandshakinginsetprotocol.port);
+ // Paper end
}
@Override
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
2021-05-16 01:42:36 +02:00
index 3ab71629699f4978cd2dab36ec7e3b32a1681f91..b9a12d59e0144becc7e9c06d9a3c3079d006b583 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -188,6 +188,20 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
}
}
+ // Paper start - Implement NetworkClient
+ @Override
+ public int getProtocolVersion() {
+ if (getHandle().playerConnection == null) return -1;
+ return getHandle().playerConnection.networkManager.protocolVersion;
+ }
+
+ @Override
+ public InetSocketAddress getVirtualHost() {
+ if (getHandle().playerConnection == null) return null;
+ return getHandle().playerConnection.networkManager.virtualHost;
+ }
+ // Paper end
+
@Override
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public double getEyeHeight(boolean ignorePose) {
if (ignorePose) {