Martin Michelsen
247 lines
8.0 KiB
C++
247 lines
8.0 KiB
C++
#pragma once
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#include <event2/event.h>
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#include <deque>
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#include <functional>
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#include <map>
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#include <memory>
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#include <phosg/Filesystem.hh>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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#include <vector>
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#include "PSOEncryption.hh"
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#include "PSOProtocol.hh"
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#include "ServerState.hh"
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class ProxyServer : public std::enable_shared_from_this<ProxyServer> {
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public:
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ProxyServer() = delete;
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ProxyServer(const ProxyServer&) = delete;
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ProxyServer(ProxyServer&&) = delete;
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ProxyServer(
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std::shared_ptr<struct event_base> base,
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std::shared_ptr<ServerState> state);
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virtual ~ProxyServer() = default;
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void listen(uint16_t port, GameVersion version,
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const struct sockaddr_storage* default_destination = nullptr);
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void connect_client(struct bufferevent* bev, uint16_t server_port);
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struct LinkedSession : std::enable_shared_from_this<LinkedSession> {
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std::weak_ptr<ProxyServer> server;
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uint64_t id;
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PrefixedLogger log;
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std::unique_ptr<struct event, void (*)(struct event*)> timeout_event;
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std::shared_ptr<License> license;
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Channel client_channel;
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Channel server_channel;
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uint16_t local_port;
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struct sockaddr_storage next_destination;
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enum class DisconnectAction {
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LONG_TIMEOUT = 0,
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MEDIUM_TIMEOUT,
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SHORT_TIMEOUT,
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CLOSE_IMMEDIATELY,
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};
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DisconnectAction disconnect_action;
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uint8_t prev_server_command_bytes[6];
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uint32_t remote_ip_crc;
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bool enable_remote_ip_crc_patch;
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GameVersion version;
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uint32_t sub_version;
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uint8_t language;
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std::string character_name;
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std::string hardware_id; // Only used for DC sessions
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std::string login_command_bb;
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ClientOptions options;
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uint32_t challenge_rank_color_override;
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std::string challenge_rank_title_override;
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int64_t remote_guild_card_number;
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parray<uint8_t, 0x20> remote_client_config_data;
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ClientConfigBB newserv_client_config;
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// A null handler in here means to forward the response to the remote server
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std::deque<std::function<void(uint32_t return_value, uint32_t checksum)>> function_call_return_handler_queue;
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G_SwitchStateChanged_6x05 last_switch_enabled_command;
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PlayerInventoryItem next_drop_item;
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uint32_t next_item_id;
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struct LobbyPlayer {
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uint32_t guild_card_number = 0;
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std::string name;
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uint8_t section_id = 0;
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uint8_t char_class = 0;
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};
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std::vector<LobbyPlayer> lobby_players;
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size_t lobby_client_id;
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size_t leader_client_id;
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uint16_t area;
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float x;
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float z;
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bool is_in_game;
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bool is_in_quest;
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std::shared_ptr<PSOBBMultiKeyDetectorEncryption> detector_crypt;
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struct SavingFile {
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std::string basename;
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std::string output_filename;
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bool is_download;
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size_t remaining_bytes;
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std::deque<std::string> blocks;
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SavingFile(
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const std::string& basename,
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const std::string& output_filename,
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size_t remaining_bytes,
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bool is_download);
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void write() const;
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};
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std::unordered_map<std::string, SavingFile> saving_files;
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// TODO: This first constructor should be private
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LinkedSession(
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std::shared_ptr<ProxyServer> server,
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uint64_t id,
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uint16_t local_port,
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GameVersion version);
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LinkedSession(
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std::shared_ptr<ProxyServer> server,
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uint16_t local_port,
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GameVersion version,
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std::shared_ptr<License> license,
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const ClientConfigBB& newserv_client_config);
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LinkedSession(
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std::shared_ptr<ProxyServer> server,
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uint16_t local_port,
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GameVersion version,
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std::shared_ptr<License> license,
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const struct sockaddr_storage& next_destination);
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LinkedSession(
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std::shared_ptr<ProxyServer> server,
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uint64_t id,
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uint16_t local_port,
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GameVersion version,
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const struct sockaddr_storage& next_destination);
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std::shared_ptr<ProxyServer> require_server() const;
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std::shared_ptr<ServerState> require_server_state() const;
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void resume(
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Channel&& client_channel,
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std::shared_ptr<PSOBBMultiKeyDetectorEncryption> detector_crypt,
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uint32_t sub_version,
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uint8_t language,
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const std::string& character_name,
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const std::string& hardware_id);
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void resume(
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Channel&& client_channel,
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std::shared_ptr<PSOBBMultiKeyDetectorEncryption> detector_crypt,
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std::string&& login_command_bb);
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void resume(Channel&& client_channel);
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void resume_inner(
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Channel&& client_channel,
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std::shared_ptr<PSOBBMultiKeyDetectorEncryption> detector_crypt);
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void connect();
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static uint64_t timeout_for_disconnect_action(DisconnectAction action);
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static void dispatch_on_timeout(evutil_socket_t fd, short what, void* ctx);
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static void on_input(Channel& ch, uint16_t, uint32_t, std::string& msg);
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static void on_error(Channel& ch, short events);
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void on_timeout();
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void clear_lobby_players(size_t num_slots);
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void send_to_game_server(const char* error_message = nullptr);
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void disconnect();
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bool is_connected() const;
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};
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std::shared_ptr<LinkedSession> get_session();
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std::shared_ptr<LinkedSession> get_session_by_name(const std::string& name);
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std::shared_ptr<LinkedSession> create_licensed_session(
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std::shared_ptr<License> l,
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uint16_t local_port,
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GameVersion version,
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const ClientConfigBB& newserv_client_config);
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void delete_session(uint64_t id);
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void delete_session(struct bufferevent* bev);
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size_t delete_disconnected_sessions();
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private:
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struct ListeningSocket {
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ProxyServer* server;
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PrefixedLogger log;
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uint16_t port;
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scoped_fd fd;
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std::unique_ptr<struct evconnlistener, void (*)(struct evconnlistener*)> listener;
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GameVersion version;
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struct sockaddr_storage default_destination;
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ListeningSocket(
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ProxyServer* server,
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uint16_t port,
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GameVersion version,
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const struct sockaddr_storage* default_destination);
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static void dispatch_on_listen_accept(struct evconnlistener* listener,
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evutil_socket_t fd, struct sockaddr* address, int socklen, void* ctx);
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static void dispatch_on_listen_error(struct evconnlistener* listener, void* ctx);
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void on_listen_accept(int fd);
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void on_listen_error();
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};
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struct UnlinkedSession {
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std::weak_ptr<ProxyServer> server;
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PrefixedLogger log;
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Channel channel;
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uint16_t local_port;
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GameVersion version;
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struct sockaddr_storage next_destination;
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std::shared_ptr<PSOBBMultiKeyDetectorEncryption> detector_crypt;
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UnlinkedSession(std::shared_ptr<ProxyServer> server, struct bufferevent* bev, uint16_t port, GameVersion version);
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std::shared_ptr<ProxyServer> require_server() const;
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std::shared_ptr<ServerState> require_server_state() const;
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void receive_and_process_commands();
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static void on_input(Channel& ch, uint16_t command, uint32_t flag, std::string& msg);
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static void on_error(Channel& ch, short events);
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};
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std::shared_ptr<struct event_base> base;
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std::shared_ptr<struct event> destroy_sessions_ev;
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std::shared_ptr<ServerState> state;
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std::map<int, std::shared_ptr<ListeningSocket>> listeners;
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std::unordered_map<struct bufferevent*, std::shared_ptr<UnlinkedSession>> bev_to_unlinked_session;
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std::unordered_set<std::shared_ptr<UnlinkedSession>> unlinked_sessions_to_destroy;
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std::unordered_map<uint64_t, std::shared_ptr<LinkedSession>> id_to_session;
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uint64_t next_unlicensed_session_id;
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static void dispatch_destroy_sessions(evutil_socket_t, short, void* ctx);
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void destroy_sessions();
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void on_client_connect(
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struct bufferevent* bev,
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uint16_t listen_port,
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GameVersion version,
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const struct sockaddr_storage* default_destination);
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};
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