//////////////////////////////////////////////////////////////////////////////////////
// akashi - a server for Attorney Online 2 //
// Copyright (C) 2020 scatterflower //
// //
// This program is free software: you can redistribute it and/or modify //
// it under the terms of the GNU Affero General Public License as //
// published by the Free Software Foundation, either version 3 of the //
// License, or (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU Affero General Public License for more details. //
// //
// You should have received a copy of the GNU Affero General Public License //
// along with this program. If not, see <https://www.gnu.org/licenses/>. //
//////////////////////////////////////////////////////////////////////////////////////
#ifndef SERVER_H
#define SERVER_H
#include "include/aoclient.h"
#include "include/aopacket.h"
#include "include/area_data.h"
#include "include/ws_proxy.h"
#include "include/db_manager.h"
#include <QCoreApplication>
#include <QDebug>
#include <QFile>
#include <QMap>
#include <QSettings>
#include <QString>
#include <QTcpServer>
#include <QTcpSocket>
#include <QTimer>
class AOClient;
class DBManager;
class AreaData;
/**
* @brief The class that represents the actual server as it is.
*/
class Server : public QObject {
Q_OBJECT
public:
/**
* @brief Creates a Server instance.
*
* @param p_port The TCP port to listen for connections on.
* @param p_ws_port The WebSocket port to listen for connections on.
* @param parent Qt-based parent, passed along to inherited constructor from QObject.
*/
Server(int p_port, int p_ws_port, QObject* parent = nullptr);
/**
* @brief Destructor for the Server class.
*
* @details Marks every Client, the WSProxy, the underlying #server, and the database manager to be deleted later.
*/
~Server();
/**
* @brief Starts the server.
*
* @details Amongst other things, this function starts the listening on the given TCP port, sets up the server
* according to the configuration file, and starts listening on the WebSocket port if it is not `-1`.
*
* Advertising is not done here -- see Advertiser::contactMasterServer() for that.
*/
void start();
/**
* @brief Gets a pointer to a client by IPID.
*
* @param ipid The IPID to look for.
*
* @return A pointer to the client if found, a nullpointer if not.
*
* @see Server::getClientsByIpid() to get all clients ran by the same user.
*/
AOClient* getClient(QString ipid);
/**
* @brief Gets a list of pointers to all clients with the given IPID.
*
* @param ipid The IPID to look for.
*
* @return A list of clients whose IPID match. List may be empty.
*/
QList<AOClient*> getClientsByIpid(QString ipid);
/**
* @brief Gets a pointer to a client by user ID.
*
* @param id The user ID to look for.
*
* @return A pointer to the client if found, a nullpointer if not.
*/
AOClient* getClientByID(int id);
/**
* @brief Updates which characters are taken in the given area, and sends out an update packet to
* all clients present the area.
*
* @param area The area in which to update the list of characters.
*/
void updateCharsTaken(AreaData* area);
/**
* @brief Sends a packet to all clients in a given area.
*
* @param packet The packet to send to the clients.
* @param area_index The index of the area to look for clients in.
*
* @note Does nothing if an area by the given index does not exist.
*/
void broadcast(AOPacket packet, int area_index);
/**
* @brief Sends a packet to all clients in the server.
*
* @param packet The packet to send to the clients.
*/
void broadcast(AOPacket packet);
/**
* @brief Returns the character's character ID (= their index in the character list).
*
* @param char_name The 'internal' name for the character whose character ID to look up. This is equivalent to
* the name of the directory of the character.
*
* @return The character ID if a character with that name exists in the character selection list, `-1` if not.
*/
int getCharID(QString char_name);
/**
* @brief The collection of all currently connected clients.
*/
QVector<AOClient*> clients;
/**
* @brief The overall player count in the server.
*/
int player_count;
/**
* @brief The characters available on the server to use.
*/
QStringList characters;
/**
* @brief The areas on the server.
*/
QVector<AreaData*> areas;
/**
* @brief The names of the areas on the server.
*
* @details Equivalent to iterating over #areas and getting the area names individually, but grouped together
* here for faster access.
*/
QStringList area_names;
/**
* @brief The available songs on the server.
*
* @details Does **not** include the area names, the actual music list packet should be constructed from
* #area_names and this combined.
*/
QStringList music_list;
/**
* @brief The backgrounds on the server that may be used in areas.
*/
QStringList backgrounds;
/**
* @brief The database manager on the server, used to store users' bans and authorisation details.
*/
DBManager* db_manager;
/**
* @brief The max amount of players on the server.
*/
QString max_players;
/**
* @brief The user-facing server name.
*/
QString server_name;
/**
* @brief The server description.
*/
QString server_desc;
/**
* @brief The Message Of The Day of the server, shown upon entry to the server and on request.
*/
QString MOTD;
/**
* @brief The Maximum amounts of IC-Messages an area is allowed to store.
*/
int maximum_statements;
/**
* @brief The authorization type of the server.
*
* @details In simple mode, the modpass stored in config.ini is used for moderator logins. In advanced mode, logins found in the database are used.
*/
QString auth_type;
/**
* @brief The modpass for moderator login with simple auth_type.
*/
QString modpass;
/**
* @brief The amount of subscripts zalgo is stripped by.
*/
int zalgo_tolerance;
/**
* @brief The highest value dice can have.
*/
int dice_value;
/**
* @brief The max amount of dice that can be rolled at once.
*/
int max_dice;
/**
* @brief The amount of time in seconds to wait before marking a user AFK.
*/
int afk_timeout;
/**
* @brief The server-wide global timer.
*/
QTimer* timer;
/**
* @brief Loads values from config.ini.
*/
void loadServerConfig();
/**
* @brief Loads the configuration files for commands into stringlists.
*/
void loadCommandConfig();
/**
* @brief Returns a stringlist with the contents of a .txt file from config/text/.
*
* @param Name of the file to load.
*/
QStringList loadConfigFile(QString filename);
QStringList getCursedCharsTaken(AOClient* client, QStringList chars_taken);
/**
* @brief List holding the contents of 8ball.txt, used by /8ball.
*/
QStringList magic_8ball_answers;
/**
* @brief List holding the contents of praise.txt, used by AOClient::getReprimand.
*/
QStringList praise_list;
/**
* @brief List holding the contents of reprimands.txt, used by AOClient::getReprimand.
*/
QStringList reprimands_list;
/**
* @brief List holding the contents of gimp.txt, used by AOClient::cmdGimp.
*/
QStringList gimp_list;
/**
* @brief Integer representing the maximum number of clients allowed to connect from the same IP
*/
int multiclient_limit;
/**
* @brief Integer representing the maximum amount of characters an IC or OOC message can contain.
*/
int max_chars;
public slots:
/**
* @brief Handles a new connection.
*
* @details The function creates an AOClient to represent the user, assigns a user ID to them, and
* checks if the client is banned.
*/
void clientConnected();
signals:
/**
* @brief Sends the server name and description, emitted by /reload.
*
* @param p_name The server name.
* @param p_desc The server description.
*/
void reloadRequest(QString p_name, QString p_desc);
private:
/**
* @brief The proxy used for WebSocket connections.
*
* @see WSProxy and WSClient for an explanation as to why this is a thing.
*/
WSProxy* proxy;
/**
* @brief Listens for incoming TCP connections.
*/
QTcpServer* server;
/**
* @brief The port through which the server will accept TCP connections.
*/
int port;
/**
* @brief The port through which the server will accept WebSocket connections.
*/
int ws_port;
};
#endif // SERVER_H