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Add support for Velocity forwarding v2 

This is strictly not needed, however, I wanted to write this in part
to test the new forwarding logic, parsing and advertising the latest
featureset is also not exactly a bad thing
This commit is contained in:
Shane Freeder 2022-06-09 14:27:06 +01:00
parent 9ad94dcbc4
commit c044b14efd
No known key found for this signature in database
GPG Key ID: A3F61EA5A085289C
4 changed files with 40 additions and 18 deletions
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46
patches/server/0272-Add-Velocity-IP-Forwarding-Support.patch
View File

@ -15,10 +15,10 @@ login plugin message packet.
diff --git a/src/main/java/com/destroystokyo/paper/proxy/VelocityProxy.java b/src/main/java/com/destroystokyo/paper/proxy/VelocityProxy.java
new file mode 100644
index 0000000000000000000000000000000000000000..74b3265bba78491f462c15709a31bc44b4e4bea8
index 0000000000000000000000000000000000000000..980e2b4dc308adf9a6cb2596b28eaeee65d629a8
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/proxy/VelocityProxy.java
@@ -0,0 +1,66 @@
@@ -0,0 +1,68 @@
+package com.destroystokyo.paper.proxy;
+
+import io.papermc.paper.configuration.GlobalConfiguration;
@ -34,9 +34,12 @@ index 0000000000000000000000000000000000000000..74b3265bba78491f462c15709a31bc44
+import javax.crypto.spec.SecretKeySpec;
+import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.entity.player.ProfilePublicKey;
+
+public class VelocityProxy {
+ private static final int SUPPORTED_FORWARDING_VERSION = 1;
+ public static final int MODERN_FORWARDING_WITH_KEY = 2;
+ public static final byte MAX_SUPPORTED_FORWARDING_VERSION = 2;
+ public static final ResourceLocation PLAYER_INFO_CHANNEL = new ResourceLocation("velocity", "player_info");
+
+ public static boolean checkIntegrity(final FriendlyByteBuf buf) {
@ -57,11 +60,6 @@ index 0000000000000000000000000000000000000000..74b3265bba78491f462c15709a31bc44
+ throw new AssertionError(e);
+ }
+
+ int version = buf.readVarInt();
+ if (version != SUPPORTED_FORWARDING_VERSION) {
+ throw new IllegalStateException("Unsupported forwarding version " + version + ", wanted " + SUPPORTED_FORWARDING_VERSION);
+ }
+
+ return true;
+ }
+
@ -84,9 +82,13 @@ index 0000000000000000000000000000000000000000..74b3265bba78491f462c15709a31bc44
+ profile.getProperties().put(name, new Property(name, value, signature));
+ }
+ }
+
+ public static ProfilePublicKey.Data readForwardedKey(FriendlyByteBuf buf) {
+ return new ProfilePublicKey.Data(buf);
+ }
+}
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index 1b075033f0640433341957f6e26ebe25f18928ee..b070624c7ee85b6692f1f44ded6c78139925b669 100644
index 1b075033f0640433341957f6e26ebe25f18928ee..8b5eddce4845619603ccfeec158d97cb86568e0d 100644
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -69,6 +69,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
@ -97,14 +99,16 @@ index 1b075033f0640433341957f6e26ebe25f18928ee..b070624c7ee85b6692f1f44ded6c7813
public ServerLoginPacketListenerImpl(MinecraftServer server, Connection connection) {
this.state = ServerLoginPacketListenerImpl.State.HELLO;
@@ -279,6 +280,14 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
@@ -279,6 +280,16 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
this.state = ServerLoginPacketListenerImpl.State.KEY;
this.connection.send(new ClientboundHelloPacket("", this.server.getKeyPair().getPublic().getEncoded(), this.nonce));
} else {
+ // Paper start - Velocity support
+ if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.velocity.enabled) {
+ this.velocityLoginMessageId = java.util.concurrent.ThreadLocalRandom.current().nextInt();
+ net.minecraft.network.protocol.login.ClientboundCustomQueryPacket packet1 = new net.minecraft.network.protocol.login.ClientboundCustomQueryPacket(this.velocityLoginMessageId, com.destroystokyo.paper.proxy.VelocityProxy.PLAYER_INFO_CHANNEL, new net.minecraft.network.FriendlyByteBuf(io.netty.buffer.Unpooled.EMPTY_BUFFER));
+ net.minecraft.network.FriendlyByteBuf buf = new net.minecraft.network.FriendlyByteBuf(io.netty.buffer.Unpooled.buffer());
+ buf.writeByte(com.destroystokyo.paper.proxy.VelocityProxy.MAX_SUPPORTED_FORWARDING_VERSION);
+ net.minecraft.network.protocol.login.ClientboundCustomQueryPacket packet1 = new net.minecraft.network.protocol.login.ClientboundCustomQueryPacket(this.velocityLoginMessageId, com.destroystokyo.paper.proxy.VelocityProxy.PLAYER_INFO_CHANNEL, buf);
+ this.connection.send(packet1);
+ return;
+ }
@ -112,7 +116,7 @@ index 1b075033f0640433341957f6e26ebe25f18928ee..b070624c7ee85b6692f1f44ded6c7813
// Spigot start
// Paper start - Cache authenticator threads
authenticatorPool.execute(new Runnable() {
@@ -388,6 +397,12 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
@@ -388,6 +399,12 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
public class LoginHandler {
public void fireEvents() throws Exception {
@ -125,7 +129,7 @@ index 1b075033f0640433341957f6e26ebe25f18928ee..b070624c7ee85b6692f1f44ded6c7813
String playerName = ServerLoginPacketListenerImpl.this.gameProfile.getName();
java.net.InetAddress address = ((java.net.InetSocketAddress) ServerLoginPacketListenerImpl.this.connection.getRemoteAddress()).getAddress();
java.util.UUID uniqueId = ServerLoginPacketListenerImpl.this.gameProfile.getId();
@@ -435,6 +450,40 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
@@ -435,6 +452,58 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
// Spigot end
public void handleCustomQueryPacket(ServerboundCustomQueryPacket packet) {
@ -142,6 +146,11 @@ index 1b075033f0640433341957f6e26ebe25f18928ee..b070624c7ee85b6692f1f44ded6c7813
+ return;
+ }
+
+ int version = buf.readVarInt();
+ if (version > com.destroystokyo.paper.proxy.VelocityProxy.MAX_SUPPORTED_FORWARDING_VERSION) {
+ throw new IllegalStateException("Unsupported forwarding version " + version + ", wanted upto " + com.destroystokyo.paper.proxy.VelocityProxy.MAX_SUPPORTED_FORWARDING_VERSION);
+ }
+
+ java.net.SocketAddress listening = this.connection.getRemoteAddress();
+ int port = 0;
+ if (listening instanceof java.net.InetSocketAddress) {
@ -151,6 +160,19 @@ index 1b075033f0640433341957f6e26ebe25f18928ee..b070624c7ee85b6692f1f44ded6c7813
+
+ this.gameProfile = com.destroystokyo.paper.proxy.VelocityProxy.createProfile(buf);
+
+ // We should already have this, but, we'll read it out anyway
+ //noinspection NonStrictComparisonCanBeEquality
+ if (version >= com.destroystokyo.paper.proxy.VelocityProxy.MODERN_FORWARDING_WITH_KEY) {
+ final ProfilePublicKey.Data forwardedKey = com.destroystokyo.paper.proxy.VelocityProxy.readForwardedKey(buf);
+ if (this.playerProfilePublicKey == null) {
+ try {
+ this.playerProfilePublicKey = ProfilePublicKey.createValidated(this.server.getServiceSignatureValidator(), forwardedKey);
+ } catch (CryptException e) {
+ this.disconnect("Unable to validate forwarded player key");
+ }
+ }
+ }
+
+ // Proceed with login
+ authenticatorPool.execute(() -> {
+ try {

4
patches/server/0636-Add-raw-address-to-AsyncPlayerPreLoginEvent.patch
View File

@ -5,10 +5,10 @@ Subject: [PATCH] Add raw address to AsyncPlayerPreLoginEvent
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index 25d96d74a656765c92e8df0bb8563947f5587f3b..3f3210fa043bee7e3a0f794e58dcba6c317e2de7 100644
index 000ee7e12a1c756e065e99ebdbcf4a51047ec4d3..2d718967cacad744a4fe1ee7cf48e613172e1b03 100644
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -410,12 +410,13 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
@@ -412,12 +412,13 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
// Paper end
String playerName = ServerLoginPacketListenerImpl.this.gameProfile.getName();
java.net.InetAddress address = ((java.net.InetSocketAddress) ServerLoginPacketListenerImpl.this.connection.getRemoteAddress()).getAddress();

4
patches/server/0763-Use-Velocity-compression-and-cipher-natives.patch
View File

@ -341,10 +341,10 @@ index 9e7154c9df96d5a0577886d43a98a73626a8f189..af3e70920221b6bd127bb3aed7f1e0a7
protected void initChannel(Channel channel) {
try {
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index 3f3210fa043bee7e3a0f794e58dcba6c317e2de7..1a0a8ac23b320b680f475d2b6c679e21f6997edb 100644
index 2d718967cacad744a4fe1ee7cf48e613172e1b03..5064ea6767ce17dde271e80f4360549462f6cca0 100644
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -338,12 +338,14 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
@@ -340,12 +340,14 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
}
SecretKey secretkey = packet.getSecretKey(privatekey);

4
patches/server/0832-Added-getHostname-to-AsyncPlayerPreLoginEvent.patch
View File

@ -5,10 +5,10 @@ Subject: [PATCH] Added getHostname to AsyncPlayerPreLoginEvent
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index f18c24266eecdc3d108c6523da6b75985bba291a..89f8690848db712f382d1a1e5b75053262d991ac 100644
index 55b7e18507eb68d66b107a1716df948040e659d6..07fa94cc67225d6398634c450d6800d609fdb3fb 100644
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -450,7 +450,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
@@ -452,7 +452,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
// Paper start
com.destroystokyo.paper.profile.PlayerProfile profile = com.destroystokyo.paper.profile.CraftPlayerProfile.asBukkitMirror(ServerLoginPacketListenerImpl.this.gameProfile);