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Paper/patches/server-unmapped/0740-Add-Unix-domain-socket-support.patch
MiniDigger 4d225813a1 Move patches around
2021-06-11 14:02:28 +02:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Tue, 11 May 2021 17:39:22 -0400
Subject: [PATCH] Add Unix domain socket support
For Windows and ARM support, JEP-380 is required:
https://inside.java/2021/02/03/jep380-unix-domain-sockets-channels/
This will be possible as of the Minecraft 1.17 Java version bump.
Tested-by: Mariell Hoversholm <proximyst@proximyst.com>
Reviewed-by: Mariell Hoversholm <proximyst@proximyst.com>
diff --git a/src/main/java/net/minecraft/network/NetworkManager.java b/src/main/java/net/minecraft/network/NetworkManager.java
index f86f430598026a3a7e27fb8d40cfc5fe7b9b845d..bf0c01eaf593972bbb18c22cfdb3abd658ec6498 100644
--- a/src/main/java/net/minecraft/network/NetworkManager.java
+++ b/src/main/java/net/minecraft/network/NetworkManager.java
@@ -564,6 +564,11 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
// Spigot Start
public SocketAddress getRawAddress()
{
+ // Paper start - this can be nullable in the case of a Unix domain socket, so if it is, fake something
+ if (this.channel.remoteAddress() == null) {
+ return new java.net.InetSocketAddress(java.net.InetAddress.getLoopbackAddress(), 0);
+ }
+ // Paper end
return this.channel.remoteAddress();
}
// Spigot End
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index 04ca3ed64d8fb9bce38d715d3618ab5c73d8cbfa..1929b992be3aeaa37c7b04c458f0ee41a60c692e 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -225,6 +225,20 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
this.i(dedicatedserverproperties.enforceWhitelist);
// this.saveData.setGameType(dedicatedserverproperties.gamemode); // CraftBukkit - moved to world loading
DedicatedServer.LOGGER.info("Default game type: {}", dedicatedserverproperties.gamemode);
+ // Paper start - Unix domain socket support
+ java.net.SocketAddress bindAddress;
+ if (this.getServerIp().startsWith("unix:")) {
+ if (!io.netty.channel.epoll.Epoll.isAvailable()) {
+ DedicatedServer.LOGGER.fatal("**** INVALID CONFIGURATION!");
+ DedicatedServer.LOGGER.fatal("You are trying to use a Unix domain socket but you're not on a supported OS.");
+ return false;
+ } else if (!com.destroystokyo.paper.PaperConfig.velocitySupport && !org.spigotmc.SpigotConfig.bungee) {
+ DedicatedServer.LOGGER.fatal("**** INVALID CONFIGURATION!");
+ DedicatedServer.LOGGER.fatal("Unix domain sockets require IPs to be forwarded from a proxy.");
+ return false;
+ }
+ bindAddress = new io.netty.channel.unix.DomainSocketAddress(this.getServerIp().substring("unix:".length()));
+ } else {
InetAddress inetaddress = null;
if (!this.getServerIp().isEmpty()) {
@@ -234,12 +248,15 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
if (this.getPort() < 0) {
this.setPort(dedicatedserverproperties.serverPort);
}
+ bindAddress = new java.net.InetSocketAddress(inetaddress, this.getPort());
+ }
+ // Paper end
this.P();
DedicatedServer.LOGGER.info("Starting Minecraft server on {}:{}", this.getServerIp().isEmpty() ? "*" : this.getServerIp(), this.getPort());
try {
- this.getServerConnection().a(inetaddress, this.getPort());
+ this.getServerConnection().bind(bindAddress); // Paper - Unix domain socket support
} catch (IOException ioexception) {
DedicatedServer.LOGGER.warn("**** FAILED TO BIND TO PORT!");
DedicatedServer.LOGGER.warn("The exception was: {}", ioexception.toString());
diff --git a/src/main/java/net/minecraft/server/network/HandshakeListener.java b/src/main/java/net/minecraft/server/network/HandshakeListener.java
index 74006c0af831c0e6a2b84b3638e397ab54984dc5..82540af8170f0b8cb52b13061ae8f956f1a6e46f 100644
--- a/src/main/java/net/minecraft/server/network/HandshakeListener.java
+++ b/src/main/java/net/minecraft/server/network/HandshakeListener.java
@@ -44,6 +44,7 @@ public class HandshakeListener implements PacketHandshakingInListener {
this.c.setProtocol(EnumProtocol.LOGIN);
// CraftBukkit start - Connection throttle
try {
+ if (!(this.c.channel.localAddress() instanceof io.netty.channel.unix.DomainSocketAddress)) { // Paper - the connection throttle is useless when you have a Unix domain socket
long currentTime = System.currentTimeMillis();
long connectionThrottle = this.b.server.getConnectionThrottle();
InetAddress address = ((java.net.InetSocketAddress) this.c.getSocketAddress()).getAddress();
@@ -72,6 +73,7 @@ public class HandshakeListener implements PacketHandshakingInListener {
}
}
}
+ } // Paper - add closing bracket for if check above
} catch (Throwable t) {
org.apache.logging.log4j.LogManager.getLogger().debug("Failed to check connection throttle", t);
}
@@ -120,8 +122,11 @@ public class HandshakeListener implements PacketHandshakingInListener {
//if (org.spigotmc.SpigotConfig.bungee) { // Paper - comment out, we check above!
String[] split = packethandshakinginsetprotocol.hostname.split("\00");
if ( ( split.length == 3 || split.length == 4 ) && ( BYPASS_HOSTCHECK || HOST_PATTERN.matcher( split[1] ).matches() ) ) { // Paper
+ // Paper start - Unix domain socket support
+ java.net.SocketAddress socketAddress = c.getSocketAddress();
packethandshakinginsetprotocol.hostname = split[0];
- c.socketAddress = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) c.getSocketAddress()).getPort());
+ c.socketAddress = new java.net.InetSocketAddress(split[1], socketAddress instanceof java.net.InetSocketAddress ? ((java.net.InetSocketAddress) socketAddress).getPort() : 0);
+ // Paper end
c.spoofedUUID = com.mojang.util.UUIDTypeAdapter.fromString( split[2] );
} else
{
diff --git a/src/main/java/net/minecraft/server/network/ServerConnection.java b/src/main/java/net/minecraft/server/network/ServerConnection.java
index 69fc2789df88344587b6052f93661ed38f24a503..06b0ed65905b9829564dfddd29012218af0f403d 100644
--- a/src/main/java/net/minecraft/server/network/ServerConnection.java
+++ b/src/main/java/net/minecraft/server/network/ServerConnection.java
@@ -70,7 +70,12 @@ public class ServerConnection {
this.c = true;
}
+ // Paper start
public void a(@Nullable InetAddress inetaddress, int i) throws IOException {
+ bind(new java.net.InetSocketAddress(inetaddress, i));
+ }
+ public void bind(java.net.SocketAddress address) throws IOException {
+ // Paper end
List list = this.listeningChannels;
synchronized (this.listeningChannels) {
@@ -78,7 +83,11 @@ public class ServerConnection {
LazyInitVar lazyinitvar;
if (Epoll.isAvailable() && this.e.l()) {
+ if (address instanceof io.netty.channel.unix.DomainSocketAddress) {
+ oclass = io.netty.channel.epoll.EpollServerDomainSocketChannel.class;
+ } else {
oclass = EpollServerSocketChannel.class;
+ }
lazyinitvar = ServerConnection.b;
ServerConnection.LOGGER.info("Using epoll channel type");
} else {
@@ -106,7 +115,7 @@ public class ServerConnection {
((NetworkManager) object).setPacketListener(new HandshakeListener(ServerConnection.this.e, (NetworkManager) object));
io.papermc.paper.network.ChannelInitializeListenerHolder.callListeners(channel); // Paper
}
- }).group((EventLoopGroup) lazyinitvar.a()).localAddress(inetaddress, i)).option(ChannelOption.AUTO_READ, false).bind().syncUninterruptibly()); // CraftBukkit
+ }).group((EventLoopGroup) lazyinitvar.a()).localAddress(address)).option(ChannelOption.AUTO_READ, false).bind().syncUninterruptibly()); // CraftBukkit // Paper
}
}
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