XForYouX/suyu
1
0
Fork 0
forked from suyu/suyu
Code Pull requests Releases Activity
suyu/src/network/room_member.cpp
german77 899c8bb330 common: multiplayer: Use GameInfo type
2022-07-25 21:59:31 +02:00

695 lines
23 KiB
C++
Raw Blame History

// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <atomic>
#include <list>
#include <mutex>
#include <set>
#include <thread>
#include "common/assert.h"
#include "enet/enet.h"
#include "network/packet.h"
#include "network/room_member.h"
namespace Network {
constexpr u32 ConnectionTimeoutMs = 5000;
class RoomMember::RoomMemberImpl {
public:
ENetHost* client = nullptr; ///< ENet network interface.
ENetPeer* server = nullptr; ///< The server peer the client is connected to
/// Information about the clients connected to the same room as us.
MemberList member_information;
/// Information about the room we're connected to.
RoomInformation room_information;
/// The current game name, id and version
GameInfo current_game_info;
std::atomic<State> state{State::Idle}; ///< Current state of the RoomMember.
void SetState(const State new_state);
void SetError(const Error new_error);
bool IsConnected() const;
std::string nickname; ///< The nickname of this member.
std::string username; ///< The username of this member.
mutable std::mutex username_mutex; ///< Mutex for locking username.
MacAddress mac_address; ///< The mac_address of this member.
std::mutex network_mutex; ///< Mutex that controls access to the `client` variable.
/// Thread that receives and dispatches network packets
std::unique_ptr<std::thread> loop_thread;
std::mutex send_list_mutex; ///< Mutex that controls access to the `send_list` variable.
std::list<Packet> send_list; ///< A list that stores all packets to send the async
template <typename T>
using CallbackSet = std::set<CallbackHandle<T>>;
std::mutex callback_mutex; ///< The mutex used for handling callbacks
class Callbacks {
public:
template <typename T>
CallbackSet<T>& Get();
private:
CallbackSet<WifiPacket> callback_set_wifi_packet;
CallbackSet<ChatEntry> callback_set_chat_messages;
CallbackSet<StatusMessageEntry> callback_set_status_messages;
CallbackSet<RoomInformation> callback_set_room_information;
CallbackSet<State> callback_set_state;
CallbackSet<Error> callback_set_error;
CallbackSet<Room::BanList> callback_set_ban_list;
};
Callbacks callbacks; ///< All CallbackSets to all events
void MemberLoop();
void StartLoop();
/**
* Sends data to the room. It will be send on channel 0 with flag RELIABLE
* @param packet The data to send
*/
void Send(Packet&& packet);
/**
* Sends a request to the server, asking for permission to join a room with the specified
* nickname and preferred mac.
* @params nickname The desired nickname.
* @params console_id_hash A hash of the Console ID.
* @params preferred_mac The preferred MAC address to use in the room, the NoPreferredMac tells
* @params password The password for the room
* the server to assign one for us.
*/
void SendJoinRequest(const std::string& nickname_, const std::string& console_id_hash,
const MacAddress& preferred_mac = NoPreferredMac,
const std::string& password = "", const std::string& token = "");
/**
* Extracts a MAC Address from a received ENet packet.
* @param event The ENet event that was received.
*/
void HandleJoinPacket(const ENetEvent* event);
/**
* Extracts RoomInformation and MemberInformation from a received ENet packet.
* @param event The ENet event that was received.
*/
void HandleRoomInformationPacket(const ENetEvent* event);
/**
* Extracts a WifiPacket from a received ENet packet.
* @param event The ENet event that was received.
*/
void HandleWifiPackets(const ENetEvent* event);
/**
* Extracts a chat entry from a received ENet packet and adds it to the chat queue.
* @param event The ENet event that was received.
*/
void HandleChatPacket(const ENetEvent* event);
/**
* Extracts a system message entry from a received ENet packet and adds it to the system message
* queue.
* @param event The ENet event that was received.
*/
void HandleStatusMessagePacket(const ENetEvent* event);
/**
* Extracts a ban list request response from a received ENet packet.
* @param event The ENet event that was received.
*/
void HandleModBanListResponsePacket(const ENetEvent* event);
/**
* Disconnects the RoomMember from the Room
*/
void Disconnect();
template <typename T>
void Invoke(const T& data);
template <typename T>
CallbackHandle<T> Bind(std::function<void(const T&)> callback);
};
// RoomMemberImpl
void RoomMember::RoomMemberImpl::SetState(const State new_state) {
if (state != new_state) {
state = new_state;
Invoke<State>(state);
}
}
void RoomMember::RoomMemberImpl::SetError(const Error new_error) {
Invoke<Error>(new_error);
}
bool RoomMember::RoomMemberImpl::IsConnected() const {
return state == State::Joining || state == State::Joined || state == State::Moderator;
}
void RoomMember::RoomMemberImpl::MemberLoop() {
// Receive packets while the connection is open
while (IsConnected()) {
std::lock_guard lock(network_mutex);
ENetEvent event;
if (enet_host_service(client, &event, 16) > 0) {
switch (event.type) {
case ENET_EVENT_TYPE_RECEIVE:
switch (event.packet->data[0]) {
case IdWifiPacket:
HandleWifiPackets(&event);
break;
case IdChatMessage:
HandleChatPacket(&event);
break;
case IdStatusMessage:
HandleStatusMessagePacket(&event);
break;
case IdRoomInformation:
HandleRoomInformationPacket(&event);
break;
case IdJoinSuccess:
case IdJoinSuccessAsMod:
// The join request was successful, we are now in the room.
// If we joined successfully, there must be at least one client in the room: us.
ASSERT_MSG(member_information.size() > 0,
"We have not yet received member information.");
HandleJoinPacket(&event); // Get the MAC Address for the client
if (event.packet->data[0] == IdJoinSuccessAsMod) {
SetState(State::Moderator);
} else {
SetState(State::Joined);
}
break;
case IdModBanListResponse:
HandleModBanListResponsePacket(&event);
break;
case IdRoomIsFull:
SetState(State::Idle);
SetError(Error::RoomIsFull);
break;
case IdNameCollision:
SetState(State::Idle);
SetError(Error::NameCollision);
break;
case IdMacCollision:
SetState(State::Idle);
SetError(Error::MacCollision);
break;
case IdConsoleIdCollision:
SetState(State::Idle);
SetError(Error::ConsoleIdCollision);
break;
case IdVersionMismatch:
SetState(State::Idle);
SetError(Error::WrongVersion);
break;
case IdWrongPassword:
SetState(State::Idle);
SetError(Error::WrongPassword);
break;
case IdCloseRoom:
SetState(State::Idle);
SetError(Error::LostConnection);
break;
case IdHostKicked:
SetState(State::Idle);
SetError(Error::HostKicked);
break;
case IdHostBanned:
SetState(State::Idle);
SetError(Error::HostBanned);
break;
case IdModPermissionDenied:
SetError(Error::PermissionDenied);
break;
case IdModNoSuchUser:
SetError(Error::NoSuchUser);
break;
}
enet_packet_destroy(event.packet);
break;
case ENET_EVENT_TYPE_DISCONNECT:
if (state == State::Joined || state == State::Moderator) {
SetState(State::Idle);
SetError(Error::LostConnection);
}
break;
case ENET_EVENT_TYPE_NONE:
break;
case ENET_EVENT_TYPE_CONNECT:
// The ENET_EVENT_TYPE_CONNECT event can not possibly happen here because we're
// already connected
ASSERT_MSG(false, "Received unexpected connect event while already connected");
break;
}
}
std::list<Packet> packets;
{
std::lock_guard send_lock(send_list_mutex);
packets.swap(send_list);
}
for (const auto& packet : packets) {
ENetPacket* enetPacket = enet_packet_create(packet.GetData(), packet.GetDataSize(),
ENET_PACKET_FLAG_RELIABLE);
enet_peer_send(server, 0, enetPacket);
}
enet_host_flush(client);
}
Disconnect();
};
void RoomMember::RoomMemberImpl::StartLoop() {
loop_thread = std::make_unique<std::thread>(&RoomMember::RoomMemberImpl::MemberLoop, this);
}
void RoomMember::RoomMemberImpl::Send(Packet&& packet) {
std::lock_guard lock(send_list_mutex);
send_list.push_back(std::move(packet));
}
void RoomMember::RoomMemberImpl::SendJoinRequest(const std::string& nickname_,
const std::string& console_id_hash,
const MacAddress& preferred_mac,
const std::string& password,
const std::string& token) {
Packet packet;
packet << static_cast<u8>(IdJoinRequest);
packet << nickname_;
packet << console_id_hash;
packet << preferred_mac;
packet << network_version;
packet << password;
packet << token;
Send(std::move(packet));
}
void RoomMember::RoomMemberImpl::HandleRoomInformationPacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8)); // Ignore the message type
RoomInformation info{};
packet >> info.name;
packet >> info.description;
packet >> info.member_slots;
packet >> info.port;
packet >> info.preferred_game.name;
packet >> info.host_username;
room_information.name = info.name;
room_information.description = info.description;
room_information.member_slots = info.member_slots;
room_information.port = info.port;
room_information.preferred_game = info.preferred_game;
room_information.host_username = info.host_username;
u32 num_members;
packet >> num_members;
member_information.resize(num_members);
for (auto& member : member_information) {
packet >> member.nickname;
packet >> member.mac_address;
packet >> member.game_info.name;
packet >> member.game_info.id;
packet >> member.username;
packet >> member.display_name;
packet >> member.avatar_url;
{
std::lock_guard lock(username_mutex);
if (member.nickname == nickname) {
username = member.username;
}
}
}
Invoke(room_information);
}
void RoomMember::RoomMemberImpl::HandleJoinPacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8)); // Ignore the message type
// Parse the MAC Address from the packet
packet >> mac_address;
}
void RoomMember::RoomMemberImpl::HandleWifiPackets(const ENetEvent* event) {
WifiPacket wifi_packet{};
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8)); // Ignore the message type
// Parse the WifiPacket from the packet
u8 frame_type;
packet >> frame_type;
WifiPacket::PacketType type = static_cast<WifiPacket::PacketType>(frame_type);
wifi_packet.type = type;
packet >> wifi_packet.channel;
packet >> wifi_packet.transmitter_address;
packet >> wifi_packet.destination_address;
packet >> wifi_packet.data;
Invoke<WifiPacket>(wifi_packet);
}
void RoomMember::RoomMemberImpl::HandleChatPacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8));
ChatEntry chat_entry{};
packet >> chat_entry.nickname;
packet >> chat_entry.username;
packet >> chat_entry.message;
Invoke<ChatEntry>(chat_entry);
}
void RoomMember::RoomMemberImpl::HandleStatusMessagePacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8));
StatusMessageEntry status_message_entry{};
u8 type{};
packet >> type;
status_message_entry.type = static_cast<StatusMessageTypes>(type);
packet >> status_message_entry.nickname;
packet >> status_message_entry.username;
Invoke<StatusMessageEntry>(status_message_entry);
}
void RoomMember::RoomMemberImpl::HandleModBanListResponsePacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8));
Room::BanList ban_list = {};
packet >> ban_list.first;
packet >> ban_list.second;
Invoke<Room::BanList>(ban_list);
}
void RoomMember::RoomMemberImpl::Disconnect() {
member_information.clear();
room_information.member_slots = 0;
room_information.name.clear();
if (!server)
return;
enet_peer_disconnect(server, 0);
ENetEvent event;
while (enet_host_service(client, &event, ConnectionTimeoutMs) > 0) {
switch (event.type) {
case ENET_EVENT_TYPE_RECEIVE:
enet_packet_destroy(event.packet); // Ignore all incoming data
break;
case ENET_EVENT_TYPE_DISCONNECT:
server = nullptr;
return;
case ENET_EVENT_TYPE_NONE:
case ENET_EVENT_TYPE_CONNECT:
break;
}
}
// didn't disconnect gracefully force disconnect
enet_peer_reset(server);
server = nullptr;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<WifiPacket>& RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_wifi_packet;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<RoomMember::State>&
RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_state;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<RoomMember::Error>&
RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_error;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<RoomInformation>&
RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_room_information;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<ChatEntry>& RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_chat_messages;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<StatusMessageEntry>&
RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_status_messages;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<Room::BanList>&
RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_ban_list;
}
template <typename T>
void RoomMember::RoomMemberImpl::Invoke(const T& data) {
std::lock_guard lock(callback_mutex);
CallbackSet<T> callback_set = callbacks.Get<T>();
for (auto const& callback : callback_set)
(*callback)(data);
}
template <typename T>
RoomMember::CallbackHandle<T> RoomMember::RoomMemberImpl::Bind(
std::function<void(const T&)> callback) {
std::lock_guard lock(callback_mutex);
CallbackHandle<T> handle;
handle = std::make_shared<std::function<void(const T&)>>(callback);
callbacks.Get<T>().insert(handle);
return handle;
}
// RoomMember
RoomMember::RoomMember() : room_member_impl{std::make_unique<RoomMemberImpl>()} {}
RoomMember::~RoomMember() {
ASSERT_MSG(!IsConnected(), "RoomMember is being destroyed while connected");
if (room_member_impl->loop_thread) {
Leave();
}
}
RoomMember::State RoomMember::GetState() const {
return room_member_impl->state;
}
const RoomMember::MemberList& RoomMember::GetMemberInformation() const {
return room_member_impl->member_information;
}
const std::string& RoomMember::GetNickname() const {
return room_member_impl->nickname;
}
const std::string& RoomMember::GetUsername() const {
std::lock_guard lock(room_member_impl->username_mutex);
return room_member_impl->username;
}
const MacAddress& RoomMember::GetMacAddress() const {
ASSERT_MSG(IsConnected(), "Tried to get MAC address while not connected");
return room_member_impl->mac_address;
}
RoomInformation RoomMember::GetRoomInformation() const {
return room_member_impl->room_information;
}
void RoomMember::Join(const std::string& nick, const std::string& console_id_hash,
const char* server_addr, u16 server_port, u16 client_port,
const MacAddress& preferred_mac, const std::string& password,
const std::string& token) {
// If the member is connected, kill the connection first
if (room_member_impl->loop_thread && room_member_impl->loop_thread->joinable()) {
Leave();
}
// If the thread isn't running but the ptr still exists, reset it
else if (room_member_impl->loop_thread) {
room_member_impl->loop_thread.reset();
}
if (!room_member_impl->client) {
room_member_impl->client = enet_host_create(nullptr, 1, NumChannels, 0, 0);
ASSERT_MSG(room_member_impl->client != nullptr, "Could not create client");
}
room_member_impl->SetState(State::Joining);
ENetAddress address{};
enet_address_set_host(&address, server_addr);
address.port = server_port;
room_member_impl->server =
enet_host_connect(room_member_impl->client, &address, NumChannels, 0);
if (!room_member_impl->server) {
room_member_impl->SetState(State::Idle);
room_member_impl->SetError(Error::UnknownError);
return;
}
ENetEvent event{};
int net = enet_host_service(room_member_impl->client, &event, ConnectionTimeoutMs);
if (net > 0 && event.type == ENET_EVENT_TYPE_CONNECT) {
room_member_impl->nickname = nick;
room_member_impl->StartLoop();
room_member_impl->SendJoinRequest(nick, console_id_hash, preferred_mac, password, token);
SendGameInfo(room_member_impl->current_game_info);
} else {
enet_peer_disconnect(room_member_impl->server, 0);
room_member_impl->SetState(State::Idle);
room_member_impl->SetError(Error::CouldNotConnect);
}
}
bool RoomMember::IsConnected() const {
return room_member_impl->IsConnected();
}
void RoomMember::SendWifiPacket(const WifiPacket& wifi_packet) {
Packet packet;
packet << static_cast<u8>(IdWifiPacket);
packet << static_cast<u8>(wifi_packet.type);
packet << wifi_packet.channel;
packet << wifi_packet.transmitter_address;
packet << wifi_packet.destination_address;
packet << wifi_packet.data;
room_member_impl->Send(std::move(packet));
}
void RoomMember::SendChatMessage(const std::string& message) {
Packet packet;
packet << static_cast<u8>(IdChatMessage);
packet << message;
room_member_impl->Send(std::move(packet));
}
void RoomMember::SendGameInfo(const GameInfo& game_info) {
room_member_impl->current_game_info = game_info;
if (!IsConnected())
return;
Packet packet;
packet << static_cast<u8>(IdSetGameInfo);
packet << game_info.name;
packet << game_info.id;
room_member_impl->Send(std::move(packet));
}
void RoomMember::SendModerationRequest(RoomMessageTypes type, const std::string& nickname) {
ASSERT_MSG(type == IdModKick || type == IdModBan || type == IdModUnban,
"type is not a moderation request");
if (!IsConnected())
return;
Packet packet;
packet << static_cast<u8>(type);
packet << nickname;
room_member_impl->Send(std::move(packet));
}
void RoomMember::RequestBanList() {
if (!IsConnected())
return;
Packet packet;
packet << static_cast<u8>(IdModGetBanList);
room_member_impl->Send(std::move(packet));
}
RoomMember::CallbackHandle<RoomMember::State> RoomMember::BindOnStateChanged(
std::function<void(const RoomMember::State&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<RoomMember::Error> RoomMember::BindOnError(
std::function<void(const RoomMember::Error&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<WifiPacket> RoomMember::BindOnWifiPacketReceived(
std::function<void(const WifiPacket&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<RoomInformation> RoomMember::BindOnRoomInformationChanged(
std::function<void(const RoomInformation&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<ChatEntry> RoomMember::BindOnChatMessageRecieved(
std::function<void(const ChatEntry&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<StatusMessageEntry> RoomMember::BindOnStatusMessageReceived(
std::function<void(const StatusMessageEntry&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<Room::BanList> RoomMember::BindOnBanListReceived(
std::function<void(const Room::BanList&)> callback) {
return room_member_impl->Bind(callback);
}
template <typename T>
void RoomMember::Unbind(CallbackHandle<T> handle) {
std::lock_guard lock(room_member_impl->callback_mutex);
room_member_impl->callbacks.Get<T>().erase(handle);
}
void RoomMember::Leave() {
room_member_impl->SetState(State::Idle);
room_member_impl->loop_thread->join();
room_member_impl->loop_thread.reset();
enet_host_destroy(room_member_impl->client);
room_member_impl->client = nullptr;
}
template void RoomMember::Unbind(CallbackHandle<WifiPacket>);
template void RoomMember::Unbind(CallbackHandle<RoomMember::State>);
template void RoomMember::Unbind(CallbackHandle<RoomMember::Error>);
template void RoomMember::Unbind(CallbackHandle<RoomInformation>);
template void RoomMember::Unbind(CallbackHandle<ChatEntry>);
template void RoomMember::Unbind(CallbackHandle<StatusMessageEntry>);
template void RoomMember::Unbind(CallbackHandle<Room::BanList>);
} // namespace Network
View git blame Copy permalink