310 lines
13 KiB
Java
310 lines
13 KiB
Java
package com.imaginarycode.minecraft.redisbungee;
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import com.google.common.base.Joiner;
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import com.google.common.collect.HashMultimap;
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import com.google.common.collect.Multimap;
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import com.google.common.io.ByteArrayDataInput;
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import com.google.common.io.ByteArrayDataOutput;
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import com.google.common.io.ByteStreams;
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import com.imaginarycode.minecraft.redisbungee.api.AbstractRedisBungeeListener;
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import com.imaginarycode.minecraft.redisbungee.api.GenericPlayerUtils;
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import com.imaginarycode.minecraft.redisbungee.api.RedisBungeePlugin;
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import com.imaginarycode.minecraft.redisbungee.api.tasks.RedisTask;
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import com.imaginarycode.minecraft.redisbungee.api.util.payload.PayloadUtils;
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import com.imaginarycode.minecraft.redisbungee.events.PubSubMessageEvent;
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import com.velocitypowered.api.event.Continuation;
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import com.velocitypowered.api.event.PostOrder;
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import com.velocitypowered.api.event.ResultedEvent;
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import com.velocitypowered.api.event.Subscribe;
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import com.velocitypowered.api.event.connection.DisconnectEvent;
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import com.velocitypowered.api.event.connection.LoginEvent;
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import com.velocitypowered.api.event.connection.PluginMessageEvent;
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import com.velocitypowered.api.event.connection.PostLoginEvent;
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import com.velocitypowered.api.event.connection.PluginMessageEvent.ForwardResult;
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import com.velocitypowered.api.event.player.ServerConnectedEvent;
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import com.velocitypowered.api.event.proxy.ProxyPingEvent;
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import com.velocitypowered.api.proxy.Player;
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import com.velocitypowered.api.proxy.ServerConnection;
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import com.velocitypowered.api.proxy.server.ServerPing;
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import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
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import redis.clients.jedis.Jedis;
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import redis.clients.jedis.JedisCluster;
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import redis.clients.jedis.Pipeline;
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import java.net.InetAddress;
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import java.util.*;
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import java.util.stream.Collectors;
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public class RedisBungeeVelocityListener extends AbstractRedisBungeeListener<LoginEvent, PostLoginEvent, DisconnectEvent, ServerConnectedEvent, ProxyPingEvent, PluginMessageEvent, PubSubMessageEvent> {
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// Some messages are using legacy characters
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private final LegacyComponentSerializer serializer = LegacyComponentSerializer.legacySection();
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public RedisBungeeVelocityListener(RedisBungeePlugin<?> plugin, List<InetAddress> exemptAddresses) {
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super(plugin, exemptAddresses);
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}
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@Subscribe
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public void onLogin(LoginEvent event, Continuation continuation) {
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plugin.executeAsync(new RedisTask<Void>(plugin) {
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@Override
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public Void jedisTask(Jedis jedis) {
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try {
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if (!event.getResult().isAllowed()) {
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return null;
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}
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// We make sure they aren't trying to use an existing player's name.
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// This is problematic for online-mode servers as they always disconnect old clients.
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if (plugin.isOnlineMode()) {
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Player player = (Player) plugin.getPlayer(event.getPlayer().getUsername());
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if (player != null) {
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event.setResult(ResultedEvent.ComponentResult.denied(serializer.deserialize(ONLINE_MODE_RECONNECT)));
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return null;
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}
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}
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for (String s : plugin.getProxiesIds()) {
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if (jedis.sismember("proxy:" + s + ":usersOnline", event.getPlayer().getUniqueId().toString())) {
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event.setResult(ResultedEvent.ComponentResult.denied(serializer.deserialize(ALREADY_LOGGED_IN)));
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return null;
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}
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}
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return null;
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} finally {
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continuation.resume();
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}
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}
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@Override
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public Void clusterJedisTask(JedisCluster jedisCluster) {
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try {
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if (!event.getResult().isAllowed()) {
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return null;
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}
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// We make sure they aren't trying to use an existing player's name.
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// This is problematic for online-mode servers as they always disconnect old clients.
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if (plugin.isOnlineMode()) {
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Player player = (Player) plugin.getPlayer(event.getPlayer().getUsername());
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if (player != null) {
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event.setResult(ResultedEvent.ComponentResult.denied(serializer.deserialize(ONLINE_MODE_RECONNECT)));
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return null;
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}
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}
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for (String s : plugin.getProxiesIds()) {
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if (jedisCluster.sismember("proxy:" + s + ":usersOnline", event.getPlayer().getUniqueId().toString())) {
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event.setResult(ResultedEvent.ComponentResult.denied(serializer.deserialize(ALREADY_LOGGED_IN)));
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return null;
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}
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}
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return null;
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} finally {
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continuation.resume();
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}
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}
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});
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}
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@Override
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@Subscribe
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public void onPostLogin(PostLoginEvent event) {
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plugin.executeAsync(new RedisTask<Void>(plugin) {
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@Override
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public Void jedisTask(Jedis jedis) {
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Pipeline pipeline = jedis.pipelined();
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plugin.getUuidTranslator().persistInfo(event.getPlayer().getUsername(), event.getPlayer().getUniqueId(), pipeline);
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VelocityPlayerUtils.createPlayer(event.getPlayer(), pipeline, true);
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pipeline.sync();
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return null;
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}
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@Override
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public Void clusterJedisTask(JedisCluster jedisCluster) {
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plugin.getUuidTranslator().persistInfo(event.getPlayer().getUsername(), event.getPlayer().getUniqueId(), jedisCluster);
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VelocityPlayerUtils.createPlayer(event.getPlayer(), jedisCluster, true);
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return null;
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}
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});
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}
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@Override
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@Subscribe
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public void onPlayerDisconnect(DisconnectEvent event) {
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plugin.executeAsync(new RedisTask<Void>(plugin) {
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@Override
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public Void jedisTask(Jedis jedis) {
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Pipeline pipeline = jedis.pipelined();
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GenericPlayerUtils.cleanUpPlayer(event.getPlayer().getUniqueId().toString(), pipeline, true);
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pipeline.sync();
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return null;
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}
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@Override
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public Void clusterJedisTask(JedisCluster jedisCluster) {
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GenericPlayerUtils.cleanUpPlayer(event.getPlayer().getUniqueId().toString(), jedisCluster, true);
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return null;
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}
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});
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}
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@Override
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@Subscribe
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public void onServerChange(ServerConnectedEvent event) {
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final String currentServer = event.getServer().getServerInfo().getName();
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final String oldServer = event.getPreviousServer().map(serverConnection -> serverConnection.getServerInfo().getName()).orElse(null);
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plugin.executeAsync(new RedisTask<Void>(plugin) {
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@Override
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public Void jedisTask(Jedis jedis) {
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jedis.hset("player:" + event.getPlayer().getUniqueId().toString(), "server", currentServer);
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PayloadUtils.playerServerChangePayload(event.getPlayer().getUniqueId(), jedis, currentServer, oldServer);
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return null;
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}
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@Override
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public Void clusterJedisTask(JedisCluster jedisCluster) {
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jedisCluster.hset("player:" + event.getPlayer().getUniqueId().toString(), "server", currentServer);
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PayloadUtils.playerServerChangePayload(event.getPlayer().getUniqueId(), jedisCluster, currentServer, oldServer);
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return null;
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}
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});
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}
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@Override
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@Subscribe(order = PostOrder.EARLY)
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public void onPing(ProxyPingEvent event) {
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if (exemptAddresses.contains(event.getConnection().getRemoteAddress().getAddress())) {
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return;
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}
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ServerPing.Builder ping = event.getPing().asBuilder();
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ping.onlinePlayers(plugin.getCount());
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event.setPing(ping.build());
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}
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@Override
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@Subscribe
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public void onPluginMessage(PluginMessageEvent event) {
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if(!(event.getSource() instanceof ServerConnection) || !RedisBungeeVelocityPlugin.IDENTIFIERS.contains(event.getIdentifier())) {
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return;
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}
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event.setResult(ForwardResult.handled());
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plugin.executeAsync(() -> {
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ByteArrayDataInput in = event.dataAsDataStream();
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String subchannel = in.readUTF();
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ByteArrayDataOutput out = ByteStreams.newDataOutput();
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String type;
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switch (subchannel) {
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case "PlayerList":
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out.writeUTF("PlayerList");
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Set<UUID> original = Collections.emptySet();
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type = in.readUTF();
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if (type.equals("ALL")) {
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out.writeUTF("ALL");
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original = plugin.getPlayers();
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} else {
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try {
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original = plugin.getApi().getPlayersOnServer(type);
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} catch (IllegalArgumentException ignored) {
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}
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}
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Set<String> players = original.stream()
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.map(uuid -> plugin.getUuidTranslator().getNameFromUuid(uuid, false))
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.collect(Collectors.toSet());
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out.writeUTF(Joiner.on(',').join(players));
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break;
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case "PlayerCount":
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out.writeUTF("PlayerCount");
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type = in.readUTF();
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if (type.equals("ALL")) {
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out.writeUTF("ALL");
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out.writeInt(plugin.getCount());
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} else {
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out.writeUTF(type);
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try {
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out.writeInt(plugin.getApi().getPlayersOnServer(type).size());
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} catch (IllegalArgumentException e) {
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out.writeInt(0);
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}
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}
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break;
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case "LastOnline":
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String user = in.readUTF();
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out.writeUTF("LastOnline");
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out.writeUTF(user);
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out.writeLong(plugin.getApi().getLastOnline(Objects.requireNonNull(plugin.getUuidTranslator().getTranslatedUuid(user, true))));
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break;
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case "ServerPlayers":
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String type1 = in.readUTF();
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out.writeUTF("ServerPlayers");
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Multimap<String, UUID> multimap = plugin.getApi().getServerToPlayers();
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boolean includesUsers;
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switch (type1) {
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case "COUNT":
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includesUsers = false;
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break;
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case "PLAYERS":
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includesUsers = true;
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break;
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default:
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// TODO: Should I raise an error?
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return;
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}
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out.writeUTF(type1);
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if (includesUsers) {
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Multimap<String, String> human = HashMultimap.create();
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for (Map.Entry<String, UUID> entry : multimap.entries()) {
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human.put(entry.getKey(), plugin.getUuidTranslator().getNameFromUuid(entry.getValue(), false));
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}
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serializeMultimap(human, true, out);
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} else {
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serializeMultiset(multimap.keys(), out);
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}
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break;
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case "Proxy":
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out.writeUTF("Proxy");
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out.writeUTF(plugin.getConfiguration().getProxyId());
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break;
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case "PlayerProxy":
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String username = in.readUTF();
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out.writeUTF("PlayerProxy");
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out.writeUTF(username);
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out.writeUTF(plugin.getApi().getProxy(Objects.requireNonNull(plugin.getUuidTranslator().getTranslatedUuid(username, true))));
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break;
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default:
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return;
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}
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((ServerConnection) event.getSource()).sendPluginMessage(event.getIdentifier(), out.toByteArray());
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});
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}
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@Override
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@Subscribe
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public void onPubSubMessage(PubSubMessageEvent event) {
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if (event.getChannel().equals("redisbungee-allservers") || event.getChannel().equals("redisbungee-" + plugin.getApi().getProxyId())) {
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String message = event.getMessage();
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if (message.startsWith("/"))
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message = message.substring(1);
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plugin.logInfo("Invoking command via PubSub: /" + message);
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((RedisBungeeVelocityPlugin)plugin).getProxy().getCommandManager().executeAsync(RedisBungeeCommandSource.getSingleton(), message);
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}
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}
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}
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