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From 98fa17b2e410c24de48f86b9daaa28e549ceea1e Mon Sep 17 00:00:00 2001
From: Minecrell <minecrell@minecrell.net>
Date: Wed, 11 Oct 2017 19:30:51 +0200
Subject: [PATCH] Call PaperServerListPingEvent for legacy pings
diff --git a/src/main/java/com/destroystokyo/paper/network/PaperLegacyStatusClient.java b/src/main/java/com/destroystokyo/paper/network/PaperLegacyStatusClient.java
new file mode 100644
index 0000000000..74c012fd40
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/network/PaperLegacyStatusClient.java
@@ -0,0 +1,73 @@
+package com.destroystokyo.paper.network;
+
+import com.destroystokyo.paper.event.server.PaperServerListPingEvent;
+import net.minecraft.server.MinecraftServer;
+import org.apache.commons.lang3.StringUtils;
+import org.bukkit.ChatColor;
+
+import java.net.InetSocketAddress;
+
+import javax.annotation.Nullable;
+
+public final class PaperLegacyStatusClient implements StatusClient {
+
+ private final InetSocketAddress address;
+ private final int protocolVersion;
+ @Nullable private final InetSocketAddress virtualHost;
+
+ private PaperLegacyStatusClient(InetSocketAddress address, int protocolVersion, @Nullable InetSocketAddress virtualHost) {
+ this.address = address;
+ this.protocolVersion = protocolVersion;
+ this.virtualHost = virtualHost;
+ }
+
+ @Override
+ public InetSocketAddress getAddress() {
+ return this.address;
+ }
+
+ @Override
+ public int getProtocolVersion() {
+ return this.protocolVersion;
+ }
+
+ @Nullable
+ @Override
+ public InetSocketAddress getVirtualHost() {
+ return this.virtualHost;
+ }
+
+ @Override
+ public boolean isLegacy() {
+ return true;
+ }
+
+ public static PaperServerListPingEvent processRequest(MinecraftServer server,
+ InetSocketAddress address, int protocolVersion, @Nullable InetSocketAddress virtualHost) {
+
+ PaperServerListPingEvent event = new PaperServerListPingEventImpl(server,
+ new PaperLegacyStatusClient(address, protocolVersion, virtualHost), Byte.MAX_VALUE, null);
+ server.server.getPluginManager().callEvent(event);
+
+ if (event.isCancelled()) {
+ return null;
+ }
+
+ return event;
+ }
+
+ public static String getMotd(PaperServerListPingEvent event) {
+ return getFirstLine(event.getMotd());
+ }
+
+ public static String getUnformattedMotd(PaperServerListPingEvent event) {
+ // Strip color codes and all other occurrences of the color char (because it's used as delimiter)
+ return getFirstLine(StringUtils.remove(ChatColor.stripColor(event.getMotd()), ChatColor.COLOR_CHAR));
+ }
+
+ private static String getFirstLine(String s) {
+ int pos = s.indexOf('\n');
+ return pos >= 0 ? s.substring(0, pos) : s;
+ }
+
+}
diff --git a/src/main/java/net/minecraft/server/LegacyPingHandler.java b/src/main/java/net/minecraft/server/LegacyPingHandler.java
index 2a99f34df6..2a30af7def 100644
--- a/src/main/java/net/minecraft/server/LegacyPingHandler.java
+++ b/src/main/java/net/minecraft/server/LegacyPingHandler.java
@@ -1,5 +1,7 @@
package net.minecraft.server;
+import com.destroystokyo.paper.network.PaperLegacyStatusClient;
+
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
@@ -45,12 +47,19 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter {
MinecraftServer minecraftserver = this.b.d();
int i = bytebuf.readableBytes();
String s;
- org.bukkit.event.server.ServerListPingEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callServerListPingEvent(minecraftserver.server, inetsocketaddress.getAddress(), minecraftserver.getMotd(), minecraftserver.getPlayerCount(), minecraftserver.getMaxPlayers()); // CraftBukkit
+ //org.bukkit.event.server.ServerListPingEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callServerListPingEvent(minecraftserver.server, inetsocketaddress.getAddress(), minecraftserver.getMotd(), minecraftserver.getPlayerCount(), minecraftserver.getMaxPlayers()); // CraftBukkit // Paper
+ com.destroystokyo.paper.event.server.PaperServerListPingEvent event; // Paper
switch (i) {
case 0:
LegacyPingHandler.a.debug("Ping: (<1.3.x) from {}:{}", inetsocketaddress.getAddress(), inetsocketaddress.getPort());
- s = String.format("%s\u00a7%d\u00a7%d", event.getMotd(), event.getNumPlayers(), event.getMaxPlayers()); // CraftBukkit
+ // Paper start - Call PaperServerListPingEvent and use results
+ event = PaperLegacyStatusClient.processRequest(minecraftserver, inetsocketaddress, 39, null);
+ if (event == null) {
+ channelhandlercontext.close();
+ break;
+ }
+ s = String.format("%s\u00a7%d\u00a7%d", PaperLegacyStatusClient.getUnformattedMotd(event), event.getNumPlayers(), event.getMaxPlayers());
this.a(channelhandlercontext, this.a(s));
break;
case 1:
@@ -59,7 +68,14 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter {
}
LegacyPingHandler.a.debug("Ping: (1.4-1.5.x) from {}:{}", inetsocketaddress.getAddress(), inetsocketaddress.getPort());
- s = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", 127, minecraftserver.getVersion(), event.getMotd(), event.getNumPlayers(), event.getMaxPlayers()); // CraftBukkit
+ // Paper start - Call PaperServerListPingEvent and use results
+ event = PaperLegacyStatusClient.processRequest(minecraftserver, inetsocketaddress, 127, null); // Paper
+ if (event == null) {
+ channelhandlercontext.close();
+ break;
+ }
+ s = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", new Object[] { event.getProtocolVersion(), minecraftserver.getVersion(), event.getMotd(), event.getNumPlayers(), event.getMaxPlayers()}); // CraftBukkit
+ // Paper end
this.a(channelhandlercontext, this.a(s));
break;
default:
@@ -169,8 +185,16 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter {
a.debug("Ping: (1.6) from {}", ctx.channel().remoteAddress());
- String response = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d",
- Byte.MAX_VALUE, server.getVersion(), server.getMotd(), server.getPlayerCount(), server.getMaxPlayers());
+ InetSocketAddress virtualHost = com.destroystokyo.paper.network.PaperNetworkClient.prepareVirtualHost(host, port);
+ com.destroystokyo.paper.event.server.PaperServerListPingEvent event = PaperLegacyStatusClient.processRequest(
+ server, (InetSocketAddress) ctx.channel().remoteAddress(), protocolVersion, virtualHost);
+ if (event == null) {
+ ctx.close();
+ return;
+ }
+
+ String response = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", event.getProtocolVersion(), event.getVersion(),
+ PaperLegacyStatusClient.getMotd(event), event.getNumPlayers(), event.getMaxPlayers());
this.a(ctx, this.a(response));
}
--
2.21.0
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