mirror of
https://e.coding.net/circlecloud/YumCore.git
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feat: 新的MC信息获取代码
Signed-off-by: 502647092 <admin@yumc.pw>
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commit
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@ -1,24 +1,53 @@
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package pw.yumc.YumCore.mc;
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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.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.InetSocketAddress;
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import java.net.Socket;
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import java.nio.charset.Charset;
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import java.util.regex.Pattern;
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import lombok.Data;
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import pw.yumc.YumCore.annotation.NotProguard;
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/**
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* Minecraft服务器数据获取类
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*
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*
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* @author 喵♂呜
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* @since 2017/1/26 0026
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*/
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@Data
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@NotProguard
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public class ServerInfo {
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private static byte PACKET_HANDSHAKE = 0x00, PACKET_STATUSREQUEST = 0x00, PACKET_PING = 0x01;
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private static int PROTOCOL_VERSION = 4;
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private static int STATUS_HANDSHAKE = 1;
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private static Pattern pattern = Pattern.compile(".*\"description\":\"(.*)\".*");
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/**
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* {
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* "version": {"name": "BungeeCord 1.8.x, 1.9.x, 1.10.x, 1.11.x", "protocol": 316},
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* "players": {"max": 922, "online": 921},
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* "description": {
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* "extra": [
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* {"color": "white", "text": " "},
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* {"color": "aqua", "bold": true, "text": "梦世界 "},
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* {"color": "red","bold": true, "obfuscated": true, "text": "|"},
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* {"color": "white", "text": " "},
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* {"color": "white", "bold": true, "text": "i5mc.com\n"},
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* {"color": "white", "text": " " },
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* {"color": "yellow", "bold": true, "text": "★"},
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* {"color": "red", "bold": true, "text": "1.8-1.11"},
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* {"color": "yellow", "bold": true, "text": "★ ★"},
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* {"color": "yellow", "text": "黄金周末"},
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* {"color": "gray", "text": "-"},
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* {"color": "green", "text": "空岛战争"},
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* {"color": "red", "bold": true, "text": "双倍硬币"},
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* {"color": "green", "text": "奖励"},
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* {"color": "yellow", "bold": true, "text": "★"}
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* ],"text": "" }
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* }
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*/
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private String address = "localhost";
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private int port = 25565;
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private int timeout = 1500;
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@ -31,9 +60,9 @@ public class ServerInfo {
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/**
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* Minecraft服务器数据获取类
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*
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*
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* @param address
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* 服务器地址 默认端口25565
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* 服务器地址 默认端口25565
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*/
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public ServerInfo(String address) {
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this(address, 25565);
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@ -41,11 +70,11 @@ public class ServerInfo {
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/**
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* Minecraft服务器数据获取类
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*
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*
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* @param address
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* 服务器地址
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* 服务器地址
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* @param port
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* 服务器端口
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* 服务器端口
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*/
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public ServerInfo(String address, int port) {
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this.address = address;
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@ -54,68 +83,61 @@ public class ServerInfo {
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/**
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* 获取服务器数据
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*
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*
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* @return 是否获取成功
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*/
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public boolean fetchData() {
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try (Socket socket = new Socket()) {
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OutputStream outputStream;
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DataOutputStream dataOutputStream;
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InputStream inputStream;
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InputStreamReader inputStreamReader;
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socket.connect(new InetSocketAddress(getAddress(), getPort()), getTimeout());
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socket.setSoTimeout(this.timeout);
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final DataInputStream in = new DataInputStream(socket.getInputStream());
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final DataOutputStream out = new DataOutputStream(socket.getOutputStream());
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socket.connect(new InetSocketAddress(this.getAddress(), this.getPort()), this.getTimeout());
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//> Handshake
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ByteArrayOutputStream handshake_bytes = new ByteArrayOutputStream();
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DataOutputStream handshake = new DataOutputStream(handshake_bytes);
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outputStream = socket.getOutputStream();
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dataOutputStream = new DataOutputStream(outputStream);
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handshake.writeByte(PACKET_HANDSHAKE);
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writeVarInt(handshake, PROTOCOL_VERSION);
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writeVarInt(handshake, getAddress().length());
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handshake.writeBytes(getAddress());
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handshake.writeShort(getPort());
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writeVarInt(handshake, STATUS_HANDSHAKE);
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inputStream = socket.getInputStream();
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inputStreamReader = new InputStreamReader(inputStream, Charset.forName("UTF-16BE"));
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writeVarInt(out, handshake_bytes.size());
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out.write(handshake_bytes.toByteArray());
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dataOutputStream.write(new byte[] { (byte) 0xFE, (byte) 0x01 });
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//> Status request
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int packetId = inputStream.read();
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out.writeByte(0x01); // Size of packet
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out.writeByte(PACKET_STATUSREQUEST);
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if (packetId == -1) { throw new IOException("Premature end of stream."); }
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//< Status response
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if (packetId != 0xFF) { throw new IOException("Invalid packet ID (" + packetId + ")."); }
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readVarInt(in); // Size
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int id = readVarInt(in);
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int length = inputStreamReader.read();
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int length = readVarInt(in);
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if (length == -1) { throw new IOException("Premature end of stream."); }
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byte[] data = new byte[length];
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in.readFully(data);
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String json = new String(data, "UTF-8");
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System.out.println(json);
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// //> Ping
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//
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// out.writeByte(0x09); // Size of packet
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// out.writeByte(PACKET_PING);
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// out.writeLong(System.currentTimeMillis());
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//
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// //< Ping
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// readVarInt(in); // Size
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// id = readVarInt(in);
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if (length == 0) { throw new IOException("Invalid string length."); }
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char[] chars = new char[length];
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if (inputStreamReader.read(chars, 0, length) != length) { throw new IOException("Premature end of stream."); }
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String string = new String(chars);
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if (string.startsWith("§")) {
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String[] data = string.split("\0");
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this.pingVersion = Integer.parseInt(data[0].substring(1));
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this.protocolVersion = Integer.parseInt(data[1]);
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this.gameVersion = data[2];
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this.motd = data[3];
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this.playersOnline = Integer.parseInt(data[4]);
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this.maxPlayers = Integer.parseInt(data[5]);
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} else {
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String[] data = string.split("§");
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this.motd = data[0];
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this.playersOnline = Integer.parseInt(data[1]);
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this.maxPlayers = Integer.parseInt(data[2]);
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}
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dataOutputStream.close();
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outputStream.close();
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inputStreamReader.close();
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inputStream.close();
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socket.close();
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// Close
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handshake.close();
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handshake_bytes.close();
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out.close();
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in.close();
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} catch (IOException exception) {
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gameVersion = "获取失败!";
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motd = "获取失败!";
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@ -124,44 +146,36 @@ public class ServerInfo {
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return true;
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}
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public String getAddress() {
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return this.address;
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/**
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* @author thinkofdeath
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* See: https://gist.github.com/thinkofdeath/e975ddee04e9c87faf22
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*/
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public int readVarInt(DataInputStream in) throws IOException {
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int i = 0;
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int j = 0;
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while (true) {
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int k = in.readByte();
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i |= (k & 0x7F) << j++ * 7;
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if (j > 5)
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throw new RuntimeException("VarInt too big");
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if ((k & 0x80) != 128)
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break;
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}
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return i;
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}
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public int getPort() {
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return this.port;
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/**
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* @author thinkofdeath
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* See: https://gist.github.com/thinkofdeath/e975ddee04e9c87faf22
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*/
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public void writeVarInt(DataOutputStream out, int paramInt) throws IOException {
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while (true) {
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if ((paramInt & 0xFFFFFF80) == 0) {
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out.writeByte(paramInt);
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return;
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}
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out.writeByte(paramInt & 0x7F | 0x80);
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paramInt >>>= 7;
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}
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}
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public void setTimeout(int timeout) {
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this.timeout = timeout;
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}
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public int getTimeout() {
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return this.timeout;
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}
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public int getPingVersion() {
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return this.pingVersion;
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}
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public int getProtocolVersion() {
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return this.protocolVersion;
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}
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public String getGameVersion() {
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return this.gameVersion;
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}
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public String getMotd() {
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return this.motd;
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}
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public int getPlayersOnline() {
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return this.playersOnline;
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}
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public int getMaxPlayers() {
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return this.maxPlayers;
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}
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}
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20
src/test/java/pw/yumc/YumCore/mc/ServerInfoTest.java
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20
src/test/java/pw/yumc/YumCore/mc/ServerInfoTest.java
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@ -0,0 +1,20 @@
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package pw.yumc.YumCore.mc;
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import org.junit.Test;
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import lombok.val;
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/**
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* Created with IntelliJ IDEA
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*
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* @author 喵♂呜
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* Created on 2017/9/28 18:50.
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*/
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public class ServerInfoTest {
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@Test
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public void test() {
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val info = new ServerInfo("play.i5mc.com");
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info.fetchData();
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}
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}
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