eaglercraft/ayunViaProxyEagUtils
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add eaglercraft server status passthru

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ayunami2000 2023-10-06 13:10:28 -04:00
parent 494471565d
commit 23cbc975f6
5 changed files with 203 additions and 33 deletions
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224
src/main/java/me/ayunami2000/ayunViaProxyEagUtils/EaglerServerHandler.java
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@ -1,6 +1,10 @@
package me.ayunami2000.ayunViaProxyEagUtils;
import com.google.common.primitives.Ints;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.viaversion.viaversion.util.ChatColorUtil;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
@ -8,6 +12,9 @@ import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageCodec;
import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketFrame;
import io.netty.util.AttributeKey;
import net.jodah.expiringmap.ExpiringMap;
import net.raphimc.netminecraft.constants.MCPackets;
import net.raphimc.netminecraft.netty.connection.NetClient;
@ -20,15 +27,19 @@ import net.raphimc.viaproxy.proxy.session.LegacyProxyConnection;
import net.raphimc.viaproxy.proxy.session.ProxyConnection;
import net.raphimc.viaproxy.proxy.util.ExceptionUtil;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.awt.image.Raster;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.*;
import java.util.concurrent.TimeUnit;
public class EaglerServerHandler extends MessageToMessageCodec<BinaryWebSocketFrame, ByteBuf> {
public class EaglerServerHandler extends MessageToMessageCodec<WebSocketFrame, ByteBuf> {
private final VersionEnum version;
private final String password;
private final NetClient proxyConnection;
@ -53,33 +64,34 @@ public class EaglerServerHandler extends MessageToMessageCodec<BinaryWebSocketFr
@Override
public void encode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
if (handshakeState < 0) {
out.add(Unpooled.EMPTY_BUFFER);
return;
}
if (version.isNewerThan(VersionEnum.r1_6_4)) {
if (in.readableBytes() == 2 && in.getUnsignedByte(0) == 0xFE && in.getUnsignedByte(1) == 0x01) {
// todo: legacy ping
ctx.close();
handshakeState = -1;
out.add(new TextWebSocketFrame("Accept: MOTD"));
return;
}
int len = PacketTypes.readVarInt(in);
ByteBuf bb = ctx.alloc().buffer(len);
bb.writeBytes(in);
int id = PacketTypes.readVarInt(bb);
if (id == 0x00) {
PacketTypes.readVarInt(bb);
PacketTypes.readString(bb, 32767);
bb.readUnsignedShort();
int nextState = PacketTypes.readVarInt(bb);
if (nextState == 1) {
// todo: ping
ctx.close();
return;
}
}
bb.release();
in.resetReaderIndex();
if (handshakeState == 0) {
handshakeState = 1;
int id = PacketTypes.readVarInt(in);
if (id == 0x00) {
PacketTypes.readVarInt(in);
PacketTypes.readString(in, 32767);
in.readUnsignedShort();
int nextState = PacketTypes.readVarInt(in);
if (nextState == 1) {
handshakeState = -2;
out.add(new TextWebSocketFrame("Accept: MOTD"));
return;
}
}
in.resetReaderIndex();
if (((ProxyConnection) proxyConnection).getGameProfile() == null) {
out.add(Unpooled.EMPTY_BUFFER);
ctx.close();
@ -134,8 +146,8 @@ public class EaglerServerHandler extends MessageToMessageCodec<BinaryWebSocketFr
public void encodeOld(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
if (in.readableBytes() == 2 && in.getUnsignedByte(0) == 0xFE && in.getUnsignedByte(1) == 0x01) {
// todo: legacy ping
ctx.close();
handshakeState = -1;
out.add(new TextWebSocketFrame("Accept: MOTD"));
return;
}
if (in.readableBytes() >= 2 && in.getUnsignedByte(0) == 2) {
@ -197,8 +209,166 @@ public class EaglerServerHandler extends MessageToMessageCodec<BinaryWebSocketFr
out.add(new BinaryWebSocketFrame(in.retain()));
}
private static class ServerInfo {
public final String motd;
public final int online;
public final int max;
public final String[] players;
public ServerInfo(String motd, int online, int max, String[] players) {
this.motd = motd;
this.online = online;
this.max = max;
this.players = players;
}
}
private static final AttributeKey<ServerInfo> serverInfoKey = AttributeKey.newInstance("server-info");
public static final AttributeKey<ByteBuf> eagIconKey = AttributeKey.newInstance("eag-icon");
private static final AttributeKey<ByteBuf> eagLegacyStatusKey = AttributeKey.newInstance("eag-legacy-status");
@Override
public void decode(ChannelHandlerContext ctx, BinaryWebSocketFrame in, List<Object> out) {
public void decode(ChannelHandlerContext ctx, WebSocketFrame in, List<Object> out) {
if (in instanceof TextWebSocketFrame && handshakeState < 0) {
JsonObject json = JsonParser.parseString(((TextWebSocketFrame) in).text()).getAsJsonObject();
if (!(json.has("data") && json.get("data").isJsonObject() && (json = json.getAsJsonObject("data")).has("motd") && json.get("motd").isJsonArray() && json.has("icon") && json.get("icon").isJsonPrimitive() && json.has("online") && json.get("online").isJsonPrimitive() && json.has("max") && json.get("max").isJsonPrimitive() && json.has("players") && json.get("players").isJsonArray())) {
out.add(Unpooled.EMPTY_BUFFER);
return;
}
JsonArray motd = json.getAsJsonArray("motd");
StringBuilder motdSb = new StringBuilder();
for (JsonElement line : motd) {
motdSb.append(line.getAsString()).append("\n");
}
if (motdSb.length() > 0) {
motdSb.setLength(motdSb.length() - 1);
}
boolean icon = json.get("icon").getAsBoolean();
int online = json.get("online").getAsInt();
int max = json.get("max").getAsInt();
JsonArray players = json.getAsJsonArray("players");
if (handshakeState == -1) {
ByteBuf bb = ctx.alloc().buffer();
bb.writeByte((byte) 0xFF);
StringBuilder sb = new StringBuilder("§1\0");
sb.append(version.getVersion()).append("\0");
sb.append(version.getName()).append("\0");
sb.append(motdSb).append("\0");
sb.append(online).append("\0");
sb.append(max);
try {
Types1_6_4.STRING.write(bb, sb.toString());
} catch (Exception ignored) {
}
if (icon) {
ctx.channel().attr(eagLegacyStatusKey).set(bb);
handshakeState = -3;
} else {
out.add(bb);
}
} else if (icon) {
List<String> playerList = new ArrayList<>();
for (JsonElement player : players) {
playerList.add(player.toString());
}
ctx.channel().attr(serverInfoKey).set(new ServerInfo(motdSb.toString(), online, max, playerList.toArray(new String[0])));
} else {
JsonObject resp = new JsonObject();
JsonObject versionObj = new JsonObject();
versionObj.addProperty("name", version.getName());
versionObj.addProperty("protocol", version.getVersion());
resp.add("version", versionObj);
JsonObject playersObj = new JsonObject();
playersObj.addProperty("max", max);
playersObj.addProperty("online", online);
if (!players.isEmpty()) {
JsonArray sampleArr = new JsonArray();
for (JsonElement player : players) {
JsonObject playerObj = new JsonObject();
playerObj.addProperty("name", player.toString());
playerObj.addProperty("id", UUID.nameUUIDFromBytes(("OfflinePlayer:" + player).getBytes(StandardCharsets.UTF_8)).toString());
sampleArr.add(playerObj);
}
playersObj.add("sample", sampleArr);
}
resp.add("players", playersObj);
JsonObject descriptionObj = new JsonObject();
descriptionObj.addProperty("text", motdSb.toString());
resp.add("description", descriptionObj);
ByteBuf bb = ctx.alloc().buffer();
PacketTypes.writeVarInt(bb, 0);
PacketTypes.writeString(bb, resp.toString());
out.add(bb);
handshakeState = -1;
}
}
if (!(in instanceof BinaryWebSocketFrame)) {
if (out.isEmpty()) {
out.add(Unpooled.EMPTY_BUFFER);
}
return;
}
if (handshakeState < 0) {
if (handshakeState == -3) {
handshakeState = -1;
if (proxyConnection instanceof ProxyConnection) {
((ProxyConnection) proxyConnection).getC2P().attr(eagIconKey).set(in.content().retain());
} else {
((LegacyProxyConnection) proxyConnection).getC2P().attr(eagIconKey).set(in.content().retain());
}
out.add(ctx.channel().attr(eagLegacyStatusKey).getAndSet(null));
return;
}
if (handshakeState == -1) {
out.add(Unpooled.EMPTY_BUFFER);
return;
}
ServerInfo serverInfo = ctx.channel().attr(serverInfoKey).getAndSet(null);
JsonObject resp = new JsonObject();
JsonObject versionObj = new JsonObject();
versionObj.addProperty("name", version.getName());
versionObj.addProperty("protocol", version.getVersion());
resp.add("version", versionObj);
JsonObject playersObj = new JsonObject();
playersObj.addProperty("max", serverInfo.max);
playersObj.addProperty("online", serverInfo.online);
if (serverInfo.players.length > 0) {
JsonArray sampleArr = new JsonArray();
for (String player : serverInfo.players) {
JsonObject playerObj = new JsonObject();
playerObj.addProperty("name", player);
playerObj.addProperty("id", UUID.nameUUIDFromBytes(("OfflinePlayer:" + player).getBytes(StandardCharsets.UTF_8)).toString());
sampleArr.add(playerObj);
}
playersObj.add("sample", sampleArr);
}
resp.add("players", playersObj);
JsonObject descriptionObj = new JsonObject();
descriptionObj.addProperty("text", serverInfo.motd);
resp.add("description", descriptionObj);
if (in.content().readableBytes() == 16384) {
BufferedImage image = new BufferedImage(64, 64, BufferedImage.TYPE_4BYTE_ABGR);
byte[] pixels = new byte[16384];
for (int i = 0; i < 4096; i++) {
pixels[i * 4] = in.content().getByte(i * 4 + 3);
pixels[i * 4 + 1] = in.content().getByte(i * 4 + 2);
pixels[i * 4 + 2] = in.content().getByte(i * 4 + 1);
pixels[i * 4 + 3] = in.content().getByte(i * 4);
}
image.setData(Raster.createRaster(image.getSampleModel(), new DataBufferByte(pixels, 16384), new Point()));
ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
ImageIO.write(image, "png", os);
resp.addProperty("favicon", "data:image/png;base64," + Base64.getEncoder().encodeToString(os.toByteArray()));
} catch (IOException ignored) {
}
}
ByteBuf bb = ctx.alloc().buffer();
PacketTypes.writeVarInt(bb, 0);
PacketTypes.writeString(bb, resp.toString());
out.add(bb);
handshakeState = -1;
return;
}
if (version.isNewerThan(VersionEnum.r1_6_4)) {
if (handshakeState == 0) {
out.add(Unpooled.EMPTY_BUFFER);

5
src/main/java/me/ayunami2000/ayunViaProxyEagUtils/EaglercraftHandler.java
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@ -97,7 +97,8 @@ public class EaglercraftHandler extends MessageToMessageCodec<WebSocketFrame, By
}
}
data.add("motd", motd);
data.addProperty("icon", root.has("favicon"));
boolean hasIcon = root.has("favicon") || ctx.channel().hasAttr(EaglerServerHandler.eagIconKey);
data.addProperty("icon", hasIcon);
if (root.has("players")) {
final JsonObject javaPlayers = root.getAsJsonObject("players");
data.add("online", javaPlayers.get("online"));
@ -121,6 +122,8 @@ public class EaglercraftHandler extends MessageToMessageCodec<WebSocketFrame, By
iconPixels[i * 4 + 3] = (byte) (pixels[i] >> 24 & 0xFF);
}
out.add(new BinaryWebSocketFrame(ctx.alloc().buffer().writeBytes(iconPixels)));
} else if (hasIcon) {
out.add(new BinaryWebSocketFrame(ctx.channel().attr(EaglerServerHandler.eagIconKey).get()));
}
} else {
if (this.state != State.LOGIN_COMPLETE) {

2
src/main/java/me/ayunami2000/ayunViaProxyEagUtils/EaglercraftInitialHandler.java
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@ -4,7 +4,6 @@ import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandler;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
@ -12,7 +11,6 @@ import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.handler.codec.http.websocketx.extensions.compression.WebSocketServerCompressionHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import net.raphimc.netminecraft.constants.MCPipeline;
import net.raphimc.viaproxy.plugins.PluginManager;
import net.raphimc.viaproxy.plugins.events.Client2ProxyHandlerCreationEvent;
import net.raphimc.viaproxy.proxy.client2proxy.Client2ProxyChannelInitializer;

1
src/main/java/me/ayunami2000/ayunViaProxyEagUtils/SkinService.java
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@ -6,7 +6,6 @@ import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
import net.raphimc.netminecraft.constants.MCPackets;
import net.raphimc.netminecraft.packet.PacketTypes;
import net.raphimc.vialegacy.protocols.release.protocol1_7_2_5to1_6_4.types.Types1_6_4;
import javax.imageio.ImageIO;
import java.awt.image.DataBufferByte;

4
src/main/java/me/ayunami2000/ayunViaProxyEagUtils/WebSocketConnectedNotifier.java
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@ -4,8 +4,8 @@ import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketClientProtocolHandler;
import io.netty.handler.codec.http.websocketx.WebSocketFrame;
import io.netty.handler.ssl.SslCompletionEvent;
import java.util.ArrayList;
@ -52,7 +52,7 @@ public class WebSocketConnectedNotifier extends ChannelDuplexHandler {
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
if (msg instanceof BinaryWebSocketFrame || msg instanceof ByteBuf) {
if (msg instanceof WebSocketFrame || msg instanceof ByteBuf) {
msgsWrite.add(new MsgPromise(msg, promise));
} else {
ctx.write(msg, promise);