package net.md_5.bungee;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.util.internal.PlatformDependent;
import java.net.InetSocketAddress;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import lombok.Getter;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import net.md_5.bungee.api.Callback;
import net.md_5.bungee.api.ProxyServer;
import net.md_5.bungee.api.Title;
import net.md_5.bungee.api.chat.BaseComponent;
import net.md_5.bungee.api.chat.TextComponent;
import net.md_5.bungee.api.config.ServerInfo;
import net.md_5.bungee.api.connection.ProxiedPlayer;
import net.md_5.bungee.api.event.PermissionCheckEvent;
import net.md_5.bungee.api.event.ServerConnectEvent;
import net.md_5.bungee.api.score.Scoreboard;
import net.md_5.bungee.chat.ComponentSerializer;
import net.md_5.bungee.connection.InitialHandler;
import net.md_5.bungee.entitymap.EntityMap;
import net.md_5.bungee.forge.ForgeClientHandler;
import net.md_5.bungee.forge.ForgeServerHandler;
import net.md_5.bungee.netty.ChannelWrapper;
import net.md_5.bungee.netty.HandlerBoss;
import net.md_5.bungee.netty.PipelineUtils;
import net.md_5.bungee.protocol.DefinedPacket;
import net.md_5.bungee.protocol.MinecraftDecoder;
import net.md_5.bungee.protocol.MinecraftEncoder;
import net.md_5.bungee.protocol.PacketWrapper;
import net.md_5.bungee.protocol.Protocol;
import net.md_5.bungee.protocol.ProtocolConstants;
import net.md_5.bungee.protocol.packet.Chat;
import net.md_5.bungee.protocol.packet.ClientSettings;
import net.md_5.bungee.protocol.packet.Kick;
import net.md_5.bungee.protocol.packet.PlayerListHeaderFooter;
import net.md_5.bungee.protocol.packet.PluginMessage;
import net.md_5.bungee.protocol.packet.SetCompression;
import net.md_5.bungee.tab.ServerUnique;
import net.md_5.bungee.tab.TabList;
import net.md_5.bungee.util.CaseInsensitiveSet;
@RequiredArgsConstructor
public final class UserConnection implements ProxiedPlayer
{
/*========================================================================*/
@NonNull
private final ProxyServer bungee;
@NonNull
private final ChannelWrapper ch;
@Getter
@NonNull
private final String name;
@Getter
private final InitialHandler pendingConnection;
/*========================================================================*/
@Getter
@Setter
private ServerConnection server;
@Getter
@Setter
private boolean dimensionChange = true;
@Getter
private final Collection<ServerInfo> pendingConnects = new HashSet<>();
/*========================================================================*/
@Getter
@Setter
private int sentPingId;
@Getter
@Setter
private long sentPingTime;
@Getter
@Setter
private int ping = 100;
@Getter
@Setter
private ServerInfo reconnectServer;
@Getter
private TabList tabListHandler;
@Getter
@Setter
private int gamemode;
@Getter
private int compressionThreshold = -1;
/*========================================================================*/
private final Collection<String> groups = new CaseInsensitiveSet();
private final Collection<String> permissions = new CaseInsensitiveSet();
/*========================================================================*/
@Getter
@Setter
private int clientEntityId;
@Getter
@Setter
private int serverEntityId;
@Getter
private ClientSettings settings;
@Getter
private final Scoreboard serverSentScoreboard = new Scoreboard();
/*========================================================================*/
@Getter
private String displayName;
@Getter
private EntityMap entityRewrite;
private Locale locale;
/*========================================================================*/
@Getter
@Setter
private ForgeClientHandler forgeClientHandler;
@Getter
@Setter
private ForgeServerHandler forgeServerHandler;
/*========================================================================*/
private final Unsafe unsafe = new Unsafe()
{
@Override
public void sendPacket(DefinedPacket packet)
{
ch.write( packet );
}
};
public void init()
{
this.entityRewrite = EntityMap.getEntityMap( getPendingConnection().getVersion() );
this.displayName = name;
// Blame Mojang for this one
/*switch ( getPendingConnection().getListener().getTabListType() )
{
case "GLOBAL":
tabListHandler = new Global( this );
break;
case "SERVER":
tabListHandler = new ServerUnique( this );
break;
default:
tabListHandler = new GlobalPing( this );
break;
}*/
tabListHandler = new ServerUnique( this );
Collection<String> g = bungee.getConfigurationAdapter().getGroups( name );
for ( String s : g )
{
addGroups( s );
}
forgeClientHandler = new ForgeClientHandler( this );
}
public void sendPacket(PacketWrapper packet)
{
ch.write( packet );
}
@Deprecated
public boolean isActive()
{
return !ch.isClosed();
}
@Override
public void setDisplayName(String name)
{
Preconditions.checkNotNull( name, "displayName" );
Preconditions.checkArgument( name.length() <= 16, "Display name cannot be longer than 16 characters" );
displayName = name;
}
@Override
public void connect(ServerInfo target)
{
connect( target, null );
}
@Override
public void connect(ServerInfo target, Callback<Boolean> callback)
{
connect( target, callback, false );
}
void sendDimensionSwitch()
{
dimensionChange = true;
unsafe().sendPacket( PacketConstants.DIM1_SWITCH );
unsafe().sendPacket( PacketConstants.DIM2_SWITCH );
}
public void connectNow(ServerInfo target)
{
sendDimensionSwitch();
connect( target );
}
public void connect(ServerInfo info, final Callback<Boolean> callback, final boolean retry)
{
Preconditions.checkNotNull( info, "info" );
ServerConnectEvent event = new ServerConnectEvent( this, info );
if ( bungee.getPluginManager().callEvent( event ).isCancelled() )
{
return;
}
final BungeeServerInfo target = (BungeeServerInfo) event.getTarget(); // Update in case the event changed target
if ( getServer() != null && Objects.equals( getServer().getInfo(), target ) )
{
sendMessage( bungee.getTranslation( "already_connected" ) );
return;
}
if ( pendingConnects.contains( target ) )
{
sendMessage( bungee.getTranslation( "already_connecting" ) );
return;
}
pendingConnects.add( target );
ChannelInitializer initializer = new ChannelInitializer()
{
@Override
protected void initChannel(Channel ch) throws Exception
{
PipelineUtils.BASE.initChannel( ch );
ch.pipeline().addAfter( PipelineUtils.FRAME_DECODER, PipelineUtils.PACKET_DECODER, new MinecraftDecoder( Protocol.HANDSHAKE, false, getPendingConnection().getVersion() ) );
ch.pipeline().addAfter( PipelineUtils.FRAME_PREPENDER, PipelineUtils.PACKET_ENCODER, new MinecraftEncoder( Protocol.HANDSHAKE, false, getPendingConnection().getVersion() ) );
ch.pipeline().get( HandlerBoss.class ).setHandler( new ServerConnector( bungee, UserConnection.this, target ) );
}
};
ChannelFutureListener listener = new ChannelFutureListener()
{
@Override
@SuppressWarnings("ThrowableResultIgnored")
public void operationComplete(ChannelFuture future) throws Exception
{
if ( callback != null )
{
callback.done( future.isSuccess(), future.cause() );
}
if ( !future.isSuccess() )
{
future.channel().close();
pendingConnects.remove( target );
ServerInfo def = ProxyServer.getInstance().getServers().get( getPendingConnection().getListener().getFallbackServer() );
if ( retry && target != def && ( getServer() == null || def != getServer().getInfo() ) )
{
sendMessage( bungee.getTranslation( "fallback_lobby" ) );
connect( def, null, false );
} else
{
if ( dimensionChange )
{
disconnect( bungee.getTranslation( "fallback_kick", future.cause().getClass().getName() ) );
} else
{
sendMessage( bungee.getTranslation( "fallback_kick", future.cause().getClass().getName() ) );
}
}
}
}
};
Bootstrap b = new Bootstrap()
.channel( PipelineUtils.getChannel() )
.group( ch.getHandle().eventLoop() )
.handler( initializer )
.option( ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000 ) // TODO: Configurable
.remoteAddress( target.getAddress() );
// Windows is bugged, multi homed users will just have to live with random connecting IPs
if ( getPendingConnection().getListener().isSetLocalAddress() && !PlatformDependent.isWindows() )
{
b.localAddress( getPendingConnection().getListener().getHost().getHostString(), 0 );
}
b.connect().addListener( listener );
}
@Override
public void disconnect(String reason)
{
disconnect0( TextComponent.fromLegacyText( reason ) );
}
@Override
public void disconnect(BaseComponent... reason)
{
disconnect0( reason );
}
@Override
public void disconnect(BaseComponent reason)
{
disconnect0( reason );
}
public void disconnect0(final BaseComponent... reason)
{
if ( !ch.isClosed() )
{
bungee.getLogger().log( Level.INFO, "[{0}] disconnected with: {1}", new Object[]
{
getName(), BaseComponent.toLegacyText( reason )
} );
// Why do we have to delay this you might ask? Well the simple reason is MOJANG.
// Despite many a bug report posted, ever since the 1.7 protocol rewrite, the client STILL has a race condition upon switching protocols.
// As such, despite the protocol switch packets already having been sent, there is the possibility of a client side exception
// To help combat this we will wait half a second before actually sending the disconnected packet so that whoever is on the other
// end has a somewhat better chance of receiving the proper packet.
ch.getHandle().eventLoop().schedule( new Runnable()
{
@Override
public void run()
{
unsafe().sendPacket( new Kick( ComponentSerializer.toString( reason ) ) );
ch.close();
}
}, 500, TimeUnit.MILLISECONDS );
if ( server != null )
{
server.disconnect( "Quitting" );
}
}
}
@Override
public void chat(String message)
{
Preconditions.checkState( server != null, "Not connected to server" );
server.getCh().write( new Chat( message ) );
}
@Override
public void sendMessage(String message)
{
sendMessage( TextComponent.fromLegacyText( message ) );
}
@Override
public void sendMessages(String... messages)
{
for ( String message : messages )
{
sendMessage( message );
}
}
@Override
public void sendMessage(BaseComponent... message)
{
unsafe().sendPacket( new Chat( ComponentSerializer.toString( message ) ) );
}
@Override
public void sendMessage(BaseComponent message)
{
unsafe().sendPacket( new Chat( ComponentSerializer.toString( message ) ) );
}
@Override
public void sendData(String channel, byte[] data)
{
unsafe().sendPacket( new PluginMessage( channel, data, forgeClientHandler.isForgeUser() ) );
}
@Override
public InetSocketAddress getAddress()
{
return (InetSocketAddress) ch.getHandle().remoteAddress();
}
@Override
public Collection<String> getGroups()
{
return Collections.unmodifiableCollection( groups );
}
@Override
public void addGroups(String... groups)
{
for ( String group : groups )
{
this.groups.add( group );
for ( String permission : bungee.getConfigurationAdapter().getPermissions( group ) )
{
setPermission( permission, true );
}
}
}
@Override
public void removeGroups(String... groups)
{
for ( String group : groups )
{
this.groups.remove( group );
for ( String permission : bungee.getConfigurationAdapter().getPermissions( group ) )
{
setPermission( permission, false );
}
}
}
@Override
public boolean hasPermission(String permission)
{
return bungee.getPluginManager().callEvent( new PermissionCheckEvent( this, permission, permissions.contains( permission ) ) ).hasPermission();
}
@Override
public void setPermission(String permission, boolean value)
{
if ( value )
{
permissions.add( permission );
} else
{
permissions.remove( permission );
}
}
@Override
public Collection<String> getPermissions()
{
return Collections.unmodifiableCollection( permissions );
}
@Override
public String toString()
{
return name;
}
@Override
public Unsafe unsafe()
{
return unsafe;
}
@Override
public String getUUID()
{
return getPendingConnection().getUUID();
}
@Override
public UUID getUniqueId()
{
return getPendingConnection().getUniqueId();
}
public void setSettings(ClientSettings settings)
{
this.settings = settings;
this.locale = null;
}
@Override
public Locale getLocale()
{
return ( locale == null && settings != null ) ? locale = Locale.forLanguageTag( settings.getLocale().replaceAll( "_", "-" ) ) : locale;
}
@Override
public Map<String, String> getModList()
{
if ( forgeClientHandler.getClientModList() == null )
{
// Return an empty map, rather than a null, if the client hasn't got any mods,
// or is yet to complete a handshake.
return ImmutableMap.of();
}
return ImmutableMap.copyOf( forgeClientHandler.getClientModList() );
}
private static final String EMPTY_TEXT = ComponentSerializer.toString( new TextComponent( "" ) );
@Override
public void setTabHeader(BaseComponent header, BaseComponent footer)
{
if ( pendingConnection.getVersion() >= ProtocolConstants.MINECRAFT_SNAPSHOT )
{
unsafe().sendPacket( new PlayerListHeaderFooter(
( header != null ) ? ComponentSerializer.toString( header ) : EMPTY_TEXT,
( footer != null ) ? ComponentSerializer.toString( footer ) : EMPTY_TEXT
) );
}
}
@Override
public void setTabHeader(BaseComponent[] header, BaseComponent[] footer)
{
if ( pendingConnection.getVersion() >= ProtocolConstants.MINECRAFT_SNAPSHOT )
{
unsafe().sendPacket( new PlayerListHeaderFooter(
( header != null ) ? ComponentSerializer.toString( header ) : EMPTY_TEXT,
( footer != null ) ? ComponentSerializer.toString( footer ) : EMPTY_TEXT
) );
}
}
@Override
public void resetTabHeader()
{
// Mojang did not add a way to remove the header / footer completely, we can only set it to empty
setTabHeader( (BaseComponent) null, null );
}
@Override
public void sendTitle(Title title)
{
title.send( this );
}
public void setCompressionThreshold(int compressionThreshold)
{
if ( this.compressionThreshold == -1 )
{
this.compressionThreshold = compressionThreshold;
unsafe.sendPacket( new SetCompression( compressionThreshold ) );
ch.setCompressionThreshold( compressionThreshold );
}
}
}