From 98fa17b2e410c24de48f86b9daaa28e549ceea1e Mon Sep 17 00:00:00 2001 From: Minecrell 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