73 lines
3.5 KiB
Java
73 lines
3.5 KiB
Java
/*
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* This file is part of ViaProxy - https://github.com/RaphiMC/ViaProxy
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* Copyright (C) 2021-2024 RK_01/RaphiMC and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.raphimc.viaproxy.proxy.packethandler;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.ChannelFutureListener;
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import net.raphimc.netminecraft.constants.ConnectionState;
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import net.raphimc.netminecraft.constants.MCPackets;
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import net.raphimc.netminecraft.packet.IPacket;
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import net.raphimc.netminecraft.packet.PacketTypes;
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import net.raphimc.netminecraft.packet.UnknownPacket;
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import net.raphimc.netminecraft.packet.impl.login.C2SLoginCustomPayloadPacket;
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import net.raphimc.netminecraft.packet.impl.login.C2SLoginKeyPacket1_7;
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import net.raphimc.vialoader.util.VersionEnum;
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import net.raphimc.viaproxy.proxy.external_interface.OpenAuthModConstants;
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import net.raphimc.viaproxy.proxy.session.ProxyConnection;
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import java.nio.charset.StandardCharsets;
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import java.util.List;
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public class CustomPayloadPacketHandler extends PacketHandler {
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private final int customPayloadId;
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public CustomPayloadPacketHandler(ProxyConnection proxyConnection) {
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super(proxyConnection);
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this.customPayloadId = MCPackets.C2S_PLUGIN_MESSAGE.getId(proxyConnection.getClientVersion().getVersion());
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}
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@Override
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public boolean handleC2P(IPacket packet, List<ChannelFutureListener> listeners) {
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if (packet instanceof UnknownPacket unknownPacket && this.proxyConnection.getC2pConnectionState() == ConnectionState.PLAY) {
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if (unknownPacket.packetId == this.customPayloadId) {
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final ByteBuf data = Unpooled.wrappedBuffer(unknownPacket.data);
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final String channel = PacketTypes.readString(data, Short.MAX_VALUE); // channel
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if (channel.equals(OpenAuthModConstants.DATA_CHANNEL) && this.proxyConnection.handleCustomPayload(PacketTypes.readVarInt(data), data)) {
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return false;
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}
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}
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} else if (packet instanceof C2SLoginCustomPayloadPacket loginCustomPayload) {
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if (loginCustomPayload.response != null && this.proxyConnection.handleCustomPayload(loginCustomPayload.queryId, Unpooled.wrappedBuffer(loginCustomPayload.response))) {
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return false;
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}
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} else if (packet instanceof C2SLoginKeyPacket1_7 loginKeyPacket) {
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if (this.proxyConnection.getClientVersion().isOlderThanOrEqualTo(VersionEnum.r1_12_2) && new String(loginKeyPacket.encryptedNonce, StandardCharsets.UTF_8).equals(OpenAuthModConstants.DATA_CHANNEL)) { // 1.8-1.12.2 OpenAuthMod response handling
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final ByteBuf byteBuf = Unpooled.wrappedBuffer(loginKeyPacket.encryptedSecretKey);
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this.proxyConnection.handleCustomPayload(PacketTypes.readVarInt(byteBuf), byteBuf);
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return false;
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}
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}
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return true;
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}
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}
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