From df020f38cbecc35e57d92f1a528e3456e9e0e6be 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 aafca9c9c4..860076fc23 100644 --- a/src/main/java/net/minecraft/server/LegacyPingHandler.java +++ b/src/main/java/net/minecraft/server/LegacyPingHandler.java @@ -9,6 +9,7 @@ import java.net.InetSocketAddress; import java.nio.charset.StandardCharsets; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; +import com.destroystokyo.paper.network.PaperLegacyStatusClient; // Paper public class LegacyPingHandler extends ChannelInboundHandlerAdapter { private static final Logger a = LogManager.getLogger(); @@ -39,10 +40,18 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter { InetSocketAddress inetsocketaddress = (InetSocketAddress)channelhandlercontext.channel().remoteAddress(); MinecraftServer minecraftserver = this.b.d(); int i = bytebuf.readableBytes(); + com.destroystokyo.paper.event.server.PaperServerListPingEvent event; // Paper switch(i) { case 0: a.debug("Ping: (<1.3.x) from {}:{}", inetsocketaddress.getAddress(), inetsocketaddress.getPort()); - String s2 = String.format("%s\u00a7%d\u00a7%d", minecraftserver.getMotd(), minecraftserver.y(), minecraftserver.z()); + // Paper start - Call PaperServerListPingEvent and use results + event = PaperLegacyStatusClient.processRequest(minecraftserver, inetsocketaddress, 39, null); + if (event == null) { + channelhandlercontext.close(); + break; + } + String s2 = String.format("%s\u00a7%d\u00a7%d", PaperLegacyStatusClient.getUnformattedMotd(event), event.getNumPlayers(), event.getMaxPlayers()); + // Paper end this.a(channelhandlercontext, this.a(s2)); break; case 1: @@ -51,7 +60,14 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter { } a.debug("Ping: (1.4-1.5.x) from {}:{}", inetsocketaddress.getAddress(), inetsocketaddress.getPort()); - String s = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", 127, minecraftserver.getVersion(), minecraftserver.getMotd(), minecraftserver.y(), minecraftserver.z()); + // Paper start - Call PaperServerListPingEvent and use results + event = PaperLegacyStatusClient.processRequest(minecraftserver, inetsocketaddress, 61, null); + if (event == null) { + channelhandlercontext.close(); + break; + } + String s = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", event.getProtocolVersion(), event.getVersion(), PaperLegacyStatusClient.getMotd(event), event.getNumPlayers(), event.getMaxPlayers()); + // Paper end this.a(channelhandlercontext, this.a(s)); break; default: @@ -161,8 +177,16 @@ 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)); } -- 2.19.0