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Code Issues Projects Releases Wiki Activity

Implement basic udp query to close #185

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This commit is contained in:
md_5 2013-09-24 10:09:55 +10:00
parent 14389eb370
commit 32a5271dc3
10 changed files with 281 additions and 2 deletions
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8
api/src/main/java/net/md_5/bungee/api/config/ListenerInfo.java
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@ -61,4 +61,12 @@ public class ListenerInfo
* server (force default server).
*/
private final boolean pingPassthrough;
/**
* What port to run udp query on.
*/
private final int queryPort;
/**
* Whether to enable udp query.
*/
private final boolean queryEnabled;
}

2
config/pom.xml
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@ -17,7 +17,7 @@
<name>BungeeCord-Config</name>
<description>Generic java configuration API intended for use with BungeeCord</description>
<dependencies>
<dependency>
<groupId>org.yaml</groupId>

1
pom.xml
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@ -42,6 +42,7 @@
<module>event</module>
<module>protocol</module>
<module>proxy</module>
<module>query</module>
</modules>
<scm>

6
proxy/pom.xml
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@ -53,6 +53,12 @@
<version>${project.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.md-5</groupId>
<artifactId>bungeecord-query</artifactId>
<version>${project.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.sf.trove4j</groupId>
<artifactId>trove4j</artifactId>

21
proxy/src/main/java/net/md_5/bungee/BungeeCord.java
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@ -60,6 +60,7 @@ import net.md_5.bungee.protocol.packet.DefinedPacket;
import net.md_5.bungee.protocol.packet.Packet3Chat;
import net.md_5.bungee.protocol.packet.PacketFAPluginMessage;
import net.md_5.bungee.protocol.Vanilla;
import net.md_5.bungee.query.RemoteQuery;
import net.md_5.bungee.tab.Custom;
import net.md_5.bungee.util.CaseInsensitiveMap;
import org.fusesource.jansi.AnsiConsole;
@ -269,6 +270,26 @@ public class BungeeCord extends ProxyServer
.group( eventLoops )
.localAddress( info.getHost() )
.bind().addListener( listener );
if ( info.isQueryEnabled() )
{
ChannelFutureListener bindListener = new ChannelFutureListener()
{
@Override
public void operationComplete(ChannelFuture future) throws Exception
{
if ( future.isSuccess() )
{
listeners.add( future.channel() );
getLogger().info( "Started query on " + future.channel().localAddress() );
} else
{
getLogger().log( Level.WARNING, "Could not bind to host " + future.channel().remoteAddress(), future.cause() );
}
}
};
new RemoteQuery( this, info ).start( new InetSocketAddress( info.getHost().getAddress(), info.getQueryPort() ), eventLoops, bindListener );
}
}
}

5
proxy/src/main/java/net/md_5/bungee/config/YamlConfig.java
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@ -215,7 +215,10 @@ public class YamlConfig implements ConfigurationAdapter
boolean setLocalAddress = get( "bind_local_address", true, val );
boolean pingPassthrough = get( "ping_passthrough", false, val );
ListenerInfo info = new ListenerInfo( address, motd, maxPlayers, tabListSize, defaultServer, fallbackServer, forceDefault, forced, value.clazz, setLocalAddress, pingPassthrough );
boolean query = get( "guery_enabled", false, val );
int queryPort = get( "query_port", 25577, val );
ListenerInfo info = new ListenerInfo( address, motd, maxPlayers, tabListSize, defaultServer, fallbackServer, forceDefault, forced, value.clazz, setLocalAddress, pingPassthrough, queryPort, query );
ret.add( info );
}

31
query/nb-configuration.xml Normal file
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@ -0,0 +1,31 @@
<?xml version="1.0" encoding="UTF-8"?>
<project-shared-configuration>
<!--
This file contains additional configuration written by modules in the NetBeans IDE.
The configuration is intended to be shared among all the users of project and
therefore it is assumed to be part of version control checkout.
Without this configuration present, some functionality in the IDE may be limited or fail altogether.
-->
<properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
<!--
Properties that influence various parts of the IDE, especially code formatting and the like.
You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
That way multiple projects can share the same settings (useful for formatting rules for example).
Any value defined here will override the pom.xml file value but is only applicable to the current project.
-->
<org-netbeans-modules-editor-indent.CodeStyle.usedProfile>project</org-netbeans-modules-editor-indent.CodeStyle.usedProfile>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.classDeclBracePlacement>NEW_LINE</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.classDeclBracePlacement>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.otherBracePlacement>NEW_LINE</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.otherBracePlacement>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.methodDeclBracePlacement>NEW_LINE</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.methodDeclBracePlacement>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinMethodCallParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinMethodCallParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinSwitchParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinSwitchParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinCatchParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinCatchParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinTryParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinTryParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinSynchronizedParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinSynchronizedParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinArrayInitBrackets>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinArrayInitBrackets>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinWhileParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinWhileParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinIfParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinIfParens>
<org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinForParens>true</org-netbeans-modules-editor-indent.text.x-java.CodeStyle.project.spaceWithinForParens>
</properties>
</project-shared-configuration>

35
query/pom.xml Normal file
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@ -0,0 +1,35 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>net.md-5</groupId>
<artifactId>bungeecord-parent</artifactId>
<version>1.6.4-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<groupId>net.md-5</groupId>
<artifactId>bungeecord-query</artifactId>
<version>1.6.4-SNAPSHOT</version>
<packaging>jar</packaging>
<name>BungeeCord-Query</name>
<description>Minecraft query implementation based on the BungeeCord API.</description>
<dependencies>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-transport</artifactId>
<version>${netty.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.md-5</groupId>
<artifactId>bungeecord-api</artifactId>
<version>${project.version}</version>
<scope>compile</scope>
</dependency>
</dependencies>
</project>

145
query/src/main/java/net/md_5/bungee/query/QueryHandler.java Normal file
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@ -0,0 +1,145 @@
package net.md_5.bungee.query;
import io.netty.buffer.ByteBuf;
import io.netty.channel.AddressedEnvelope;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.DatagramPacket;
import java.nio.ByteOrder;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import java.util.concurrent.TimeUnit;
import lombok.RequiredArgsConstructor;
import net.md_5.bungee.api.ProxyServer;
import net.md_5.bungee.api.config.ListenerInfo;
import net.md_5.bungee.api.connection.ProxiedPlayer;
@RequiredArgsConstructor
public class QueryHandler extends SimpleChannelInboundHandler<DatagramPacket>
{
private final ProxyServer bungee;
private final ListenerInfo listener;
/*========================================================================*/
private final Random random = new Random();
private final Map<Integer, Long> sessions = new HashMap<>();
private void writeShort(ByteBuf buf, int s)
{
buf.order( ByteOrder.LITTLE_ENDIAN ).writeShort( s );
}
private void writeNumber(ByteBuf buf, int i)
{
writeString( buf, Integer.toString( i ) );
}
private void writeString(ByteBuf buf, String s)
{
for ( char c : s.toCharArray() )
{
buf.writeChar( c );
}
buf.writeByte( 0x00 );
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception
{
super.channelActive( ctx ); //To change body of generated methods, choose Tools | Templates.
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, DatagramPacket msg) throws Exception
{
ByteBuf in = msg.content();
if ( in.readUnsignedByte() != 0xFE && in.readUnsignedByte() != 0xFD )
{
throw new IllegalStateException( "Incorrect magic!" );
}
ByteBuf out = ctx.alloc().buffer();
AddressedEnvelope response = new DatagramPacket( out, msg.sender() );
byte type = in.readByte();
int sessionId = in.readInt();
if ( type == 0x09 )
{
out.writeByte( 0x09 );
out.writeInt( sessionId );
int challengeToken = random.nextInt();
sessions.put( challengeToken, System.currentTimeMillis() );
writeNumber( out, challengeToken );
}
if ( type == 0x00 )
{
int challengeToken = out.readInt();
Long session = sessions.get( challengeToken );
if ( session == null || System.currentTimeMillis() - session > TimeUnit.SECONDS.toMillis( 30 ) )
{
throw new IllegalStateException( "No session!" );
}
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
} else if ( in.readableBytes() == 8 )
{
// Long Response
out.writeBytes( new byte[ 11 ] );
Map<String, String> data = new HashMap<>();
data.put( "hostname", listener.getMotd() );
data.put( "gametype", "SMP" );
// Start Extra Info
data.put( "game_id", "MINECRAFT" );
data.put( "version", bungee.getGameVersion() );
// data.put( "plugins","");
// 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() );
for ( Map.Entry<String, String> entry : data.entrySet() )
{
writeString( out, entry.getKey() );
writeString( out, entry.getValue() );
}
out.writeByte( 0x00 ); // Null
// Padding
out.writeBytes( new byte[ 10 ] );
// Player List
for ( ProxiedPlayer p : bungee.getPlayers() )
{
writeString( out, p.getName() );
}
out.writeByte( 0x00 ); // Null
} else
{
// Error!
throw new IllegalStateException( "Invalid data request packet" );
}
}
ctx.writeAndFlush( response );
}
}

29
query/src/main/java/net/md_5/bungee/query/RemoteQuery.java Normal file
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@ -0,0 +1,29 @@
package net.md_5.bungee.query;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.socket.nio.NioDatagramChannel;
import java.net.InetSocketAddress;
import lombok.RequiredArgsConstructor;
import net.md_5.bungee.api.ProxyServer;
import net.md_5.bungee.api.config.ListenerInfo;
@RequiredArgsConstructor
public class RemoteQuery
{
private final ProxyServer bungee;
private final ListenerInfo listener;
public void start(InetSocketAddress address, EventLoopGroup eventLoop, ChannelFutureListener future)
{
new Bootstrap()
.channel( NioDatagramChannel.class )
.group( eventLoop )
.handler( new QueryHandler( bungee, listener ) )
.localAddress( address )
.bind().addListener( future );
}
}