forked from GeyserMC/Geyser
131 lines
5.5 KiB
Java
131 lines
5.5 KiB
Java
/*
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* Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*
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*/
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package org.geysermc.connector.ping;
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import com.fasterxml.jackson.core.JsonParseException;
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import com.fasterxml.jackson.databind.JsonMappingException;
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import com.github.steveice10.mc.protocol.MinecraftConstants;
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import com.nukkitx.nbt.util.VarInts;
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import org.geysermc.connector.common.ping.GeyserPingInfo;
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import org.geysermc.connector.GeyserConnector;
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import java.io.ByteArrayOutputStream;
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import java.io.DataInputStream;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.net.ConnectException;
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import java.net.InetSocketAddress;
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import java.net.Socket;
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import java.net.SocketTimeoutException;
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import java.util.concurrent.TimeUnit;
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public class GeyserLegacyPingPassthrough implements IGeyserPingPassthrough, Runnable {
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private GeyserConnector connector;
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public GeyserLegacyPingPassthrough(GeyserConnector connector) {
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this.connector = connector;
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}
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private GeyserPingInfo pingInfo;
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/**
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* Start legacy ping passthrough thread
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* @param connector GeyserConnector
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* @return GeyserPingPassthrough, or null if not initialized
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*/
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public static IGeyserPingPassthrough init(GeyserConnector connector) {
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if (connector.getConfig().isPassthroughMotd() || connector.getConfig().isPassthroughPlayerCounts()) {
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GeyserLegacyPingPassthrough pingPassthrough = new GeyserLegacyPingPassthrough(connector);
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// Ensure delay is not zero
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int interval = (connector.getConfig().getPingPassthroughInterval() == 0) ? 1 : connector.getConfig().getPingPassthroughInterval();
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connector.getLogger().debug("Scheduling ping passthrough at an interval of " + interval + " second(s).");
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connector.getGeneralThreadPool().scheduleAtFixedRate(pingPassthrough, 1, interval, TimeUnit.SECONDS);
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return pingPassthrough;
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}
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return null;
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}
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@Override
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public GeyserPingInfo getPingInformation() {
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return pingInfo;
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}
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@Override
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public void run() {
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try {
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Socket socket = new Socket();
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String address = connector.getConfig().getRemote().getAddress();
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int port = connector.getConfig().getRemote().getPort();
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socket.connect(new InetSocketAddress(address, port), 5000);
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ByteArrayOutputStream byteArrayStream = new ByteArrayOutputStream();
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DataOutputStream handshake = new DataOutputStream(byteArrayStream);
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handshake.write(0x0);
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VarInts.writeUnsignedInt(handshake, MinecraftConstants.PROTOCOL_VERSION);
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VarInts.writeUnsignedInt(handshake, address.length());
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handshake.writeBytes(address);
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handshake.writeShort(port);
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VarInts.writeUnsignedInt(handshake, 1);
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DataOutputStream dataOutputStream = new DataOutputStream(socket.getOutputStream());
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VarInts.writeUnsignedInt(dataOutputStream, byteArrayStream.size());
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dataOutputStream.write(byteArrayStream.toByteArray());
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dataOutputStream.writeByte(0x01);
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dataOutputStream.writeByte(0x00);
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DataInputStream dataInputStream = new DataInputStream(socket.getInputStream());
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VarInts.readUnsignedInt(dataInputStream);
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VarInts.readUnsignedInt(dataInputStream);
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int length = VarInts.readUnsignedInt(dataInputStream);
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byte[] buffer = new byte[length];
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dataInputStream.readFully(buffer);
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dataOutputStream.writeByte(0x09);
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dataOutputStream.writeByte(0x01);
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dataOutputStream.writeLong(System.currentTimeMillis());
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VarInts.readUnsignedInt(dataInputStream);
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String json = new String(buffer);
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this.pingInfo = GeyserConnector.JSON_MAPPER.readValue(json, GeyserPingInfo.class);
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byteArrayStream.close();
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handshake.close();
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dataOutputStream.close();
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dataInputStream.close();
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socket.close();
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} catch (SocketTimeoutException | ConnectException ex) {
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this.pingInfo = null;
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this.connector.getLogger().debug("Connection timeout for ping passthrough.");
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} catch (JsonParseException | JsonMappingException ex) {
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this.connector.getLogger().error("Failed to parse json when pinging server!", ex);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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