101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
#include "Protocol.h"
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#include "PacketReader.h"
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#include "PacketTypes.h"
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#include "MinecraftClient.h"
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#include "DedicatedServer.h"
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#include <string>
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namespace Feather
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{
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void Protocol::HandlePacket(MinecraftClient& client, PacketReader& packet)
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{
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auto& context = client.GetContext();
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switch (context.GetState())
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{
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case ProtocolState::Handholding:
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{
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auto id = packet.ReadVarInt<ServerboundHandholdingPacketId>();
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uint8_t legacyId = packet.Peek<uint8_t>();
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if (id != ServerboundHandholdingPacketId::Handshake && legacyId != LegacyServerListPing)
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{
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printf("[Protocol] Client sent packet with non-zero ID 0x%x while state was HANDSHAKING\n", id);
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break;
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}
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if (id != ServerboundHandholdingPacketId::Handshake)
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{
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// Legacy server ping.
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// TODO: Do server list ping here.
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break;
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}
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int clientProtocolVersion = packet.ReadVarInt();
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string serverIp = packet.ReadString();
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uint16_t port = packet.Read<uint16_t>();
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// next desired state
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ProtocolState intention = (ProtocolState)(packet.ReadVarInt());
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printf("[Protocol] Client Intention Packet: version=%d, serverIp=%s, port=%u, intention=%d\n",
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clientProtocolVersion,
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serverIp.c_str(),
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port,
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intention
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);
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context.SetState(intention);
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break;
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}
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case ProtocolState::Status:
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{
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auto id = packet.ReadVarInt<ServerboundStatusPacketId>();
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switch (id)
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{
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case ServerboundStatusPacketId::Request:
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{
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printf("[Protocol] Client sent STATUS_PING_REQUEST\n");
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std::string status = m_server.GetStatus().GetServerStatusJSON();
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NetworkMessage msg(VARINT_MAX_SIZE + status.length());
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// Packet ID
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msg.WriteVarInt(ClientBoundStatusPacketId::Response);
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// JSON Contents
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msg.WriteString(status.c_str(), static_cast<int32_t>(status.length()));
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msg.Finalize();
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client.SendMessage(msg);
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break;
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}
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case ServerboundStatusPacketId::Ping:
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{
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int64_t timestamp = packet.Read<int64_t>();
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printf("[Protocol] Client sent STATUS_PING: %lld\n", timestamp);
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NetworkMessage msg(VARINT_MAX_SIZE + sizeof(int64_t));
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msg.WriteVarInt(ClientBoundStatusPacketId::Pong);
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msg.Write<uint64_t>(timestamp);
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msg.Finalize();
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client.SendMessage(msg);
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break;
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}
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}
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break;
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}
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case ProtocolState::Login:
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{
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int id = packet.ReadVarInt();
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Log_Info("Login packet ID %d", id);
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break;
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}
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}
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}
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}
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