Waterfall/BungeeCord-Patches/0030-Proxy-query-event.patch

From 05394782ec180a43a827538f0dee0ae705dec2c2 Mon Sep 17 00:00:00 2001
From: minecrafter <unknown@unknown>
Date: Sun, 3 Jul 2016 04:03:21 -0400
Subject: [PATCH] Proxy query event


diff --git a/api/src/main/java/io/github/waterfallmc/waterfall/QueryResult.java b/api/src/main/java/io/github/waterfallmc/waterfall/QueryResult.java
new file mode 100644
index 00000000..9a262c8a
--- /dev/null
+++ b/api/src/main/java/io/github/waterfallmc/waterfall/QueryResult.java
@@ -0,0 +1,59 @@
+package io.github.waterfallmc.waterfall;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NonNull;
+
+import java.util.List;
+
+@Data
+@AllArgsConstructor
+public class QueryResult {
+    /**
+     * The message of the day to return.
+     */
+    @NonNull
+    private String motd;
+    /**
+     * The game type to return, usually SMP.
+     */
+    @NonNull
+    private String gameType;
+    /**
+     * The world name to return.
+     */
+    @NonNull
+    private String worldName;
+    /**
+     * The number of players currently online.
+     */
+    private int onlinePlayers;
+    /**
+     * The maximum number of players that can be online.
+     */
+    private int maxPlayers;
+    /**
+     * The port for this server.
+     */
+    private int port;
+    /**
+     * The hostname for this server.
+     */
+    @NonNull
+    private String address;
+    /**
+     * The game ID for this server, usually MINECRAFT.
+     */
+    @NonNull
+    private String gameId;
+    /**
+     * The players currently online.
+     */
+    @NonNull
+    private final List<String> players;
+    /**
+     * The version to return for this server.
+     */
+    @NonNull
+    private String version;
+}
diff --git a/api/src/main/java/io/github/waterfallmc/waterfall/event/ProxyQueryEvent.java b/api/src/main/java/io/github/waterfallmc/waterfall/event/ProxyQueryEvent.java
new file mode 100644
index 00000000..220d59f0
--- /dev/null
+++ b/api/src/main/java/io/github/waterfallmc/waterfall/event/ProxyQueryEvent.java
@@ -0,0 +1,28 @@
+package io.github.waterfallmc.waterfall.event;
+
+import io.github.waterfallmc.waterfall.QueryResult;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NonNull;
+import net.md_5.bungee.api.config.ListenerInfo;
+import net.md_5.bungee.api.plugin.Event;
+
+/**
+ * This event will be posted whenever a Query request is received.
+ */
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = false)
+@Data
+public class ProxyQueryEvent extends Event {
+    /**
+     * The listener associated with this query.
+     */
+    @NonNull
+    private final ListenerInfo listener;
+    /**
+     * The query to return.
+     */
+    @NonNull
+    private QueryResult result;
+}
diff --git a/query/src/main/java/net/md_5/bungee/query/QueryHandler.java b/query/src/main/java/net/md_5/bungee/query/QueryHandler.java
index 9b81197f..ac99d02c 100644
--- a/query/src/main/java/net/md_5/bungee/query/QueryHandler.java
+++ b/query/src/main/java/net/md_5/bungee/query/QueryHandler.java
@@ -2,6 +2,8 @@ package net.md_5.bungee.query;
 
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
+import io.github.waterfallmc.waterfall.QueryResult;
+import io.github.waterfallmc.waterfall.event.ProxyQueryEvent;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.AddressedEnvelope;
 import io.netty.channel.ChannelHandlerContext;
@@ -9,10 +11,12 @@ import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.channel.socket.DatagramPacket;
 import java.net.InetAddress;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Random;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
+import java.util.stream.Collectors;
 import lombok.Data;
 import lombok.RequiredArgsConstructor;
 import net.md_5.bungee.api.ProxyServer;
@@ -95,19 +99,30 @@ public class QueryHandler extends SimpleChannelInboundHandler<DatagramPacket>
                 throw new IllegalStateException( "No session!" );
             }
 
+            // Waterfall start
+            List<String> players = bungee.getPlayers().stream().map(ProxiedPlayer::getName).collect(Collectors.toList());
+
+            ProxyQueryEvent event = new ProxyQueryEvent(listener, new QueryResult(listener.getMotd(), "SMP", "Waterfall_Proxy",
+                    bungee.getOnlineCount(), listener.getMaxPlayers(), listener.getHost().getPort(),
+                    listener.getHost().getHostString(), "MINECRAFT",  players, bungee.getGameVersion()));
+            QueryResult result = bungee.getPluginManager().callEvent(event).getResult();
+            // Waterfall end
+
             out.writeByte( 0x00 );
             out.writeInt( sessionId );
 
             if ( in.readableBytes() == 0 )
             {
                 // Short response
-                writeString( out, listener.getMotd() ); // MOTD
-                writeString( out, "SMP" ); // Game Type
-                writeString( out, "BungeeCord_Proxy" ); // World Name
-                writeNumber( out, bungee.getOnlineCount() ); // Online Count
-                writeNumber( out, listener.getMaxPlayers() ); // Max Players
-                writeShort( out, listener.getHost().getPort() ); // Port
-                writeString( out, listener.getHost().getHostString() ); // IP
+                // Waterfall start
+                writeString( out, result.getMotd() ); // MOTD
+                writeString( out, result.getGameType() ); // Game Type
+                writeString( out, result.getWorldName() ); // World Name
+                writeNumber( out, result.getOnlinePlayers() ); // Online Count
+                writeNumber( out, result.getMaxPlayers() ); // Max Players
+                writeShort( out, result.getPort() ); // Port
+                writeString( out, result.getAddress() ); // IP
+                // Waterfall end
             } else if ( in.readableBytes() == 4 )
             {
                 // Long Response
@@ -117,18 +132,20 @@ public class QueryHandler extends SimpleChannelInboundHandler<DatagramPacket>
                 } );
                 Map<String, String> data = new LinkedHashMap<>();
 
-                data.put( "hostname", listener.getMotd() );
-                data.put( "gametype", "SMP" );
+                // Waterfall start
+                data.put( "hostname", result.getMotd() );
+                data.put( "gametype", result.getGameType() );
                 // Start Extra Info
-                data.put( "game_id", "MINECRAFT" );
-                data.put( "version", bungee.getGameVersion() );
-                data.put( "plugins", "" );
+                data.put( "game_id", result.getGameId() );
+                data.put( "version", result.getVersion() );
+                data.put( "plugins", "" ); // TODO: Allow population?
                 // End Extra Info
-                data.put( "map", "BungeeCord_Proxy" );
-                data.put( "numplayers", Integer.toString( bungee.getOnlineCount() ) );
-                data.put( "maxplayers", Integer.toString( listener.getMaxPlayers() ) );
-                data.put( "hostport", Integer.toString( listener.getHost().getPort() ) );
-                data.put( "hostip", listener.getHost().getHostString() );
+                data.put( "map", result.getWorldName() );
+                data.put( "numplayers", Integer.toString( result.getOnlinePlayers() ) );
+                data.put( "maxplayers", Integer.toString( result.getMaxPlayers() ) );
+                data.put( "hostport", Integer.toString( result.getPort() ) );
+                data.put( "hostip", result.getAddress() );
+                // Waterfall end
 
                 for ( Map.Entry<String, String> entry : data.entrySet() )
                 {
@@ -140,10 +157,7 @@ public class QueryHandler extends SimpleChannelInboundHandler<DatagramPacket>
                 // Padding
                 writeString( out, "\01player_\00" );
                 // Player List
-                for ( ProxiedPlayer p : bungee.getPlayers() )
-                {
-                    writeString( out, p.getName() );
-                }
+                result.getPlayers().stream().forEach(p -> writeString(out, p)); // Waterfall
                 out.writeByte( 0x00 ); // Null
             } else
             {
-- 
2.26.1