e01f0e1c57
* Changed message_floodguard logic, ... Resolve #3 The client individual client timer was ignored in favor of the area timer as it wouldn't make a lot of sense to have 3 different timers for game messages. * Changed message_floodguard to only affect the area in which the message was sent rather than globally. The default value is 250ms. * Added global_message_floodguard, this restores the previous functionality of message_floodguard. The default value is 0ms.
541 lines
16 KiB
C++
541 lines
16 KiB
C++
//////////////////////////////////////////////////////////////////////////////////////
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// akashi - a server for Attorney Online 2 //
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// Copyright (C) 2020 scatterflower //
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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 Affero General Public License as //
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// published by the Free Software Foundation, either version 3 of the //
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// License, or (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 Affero General Public License for more details. //
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// //
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// You should have received a copy of the GNU Affero General Public License //
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// along with this program. If not, see <https://www.gnu.org/licenses/>. //
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//////////////////////////////////////////////////////////////////////////////////////
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#ifndef SERVER_H
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#define SERVER_H
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#include <QCoreApplication>
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#include <QDebug>
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#include <QFile>
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#include <QMap>
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#include <QSettings>
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#include <QStack>
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#include <QString>
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#include <QTcpServer>
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#include <QTcpSocket>
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#include <QTimer>
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#include "include/aopacket.h"
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class ACLRolesHandler;
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class Advertiser;
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class AOClient;
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class AreaData;
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class ConfigManager;
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class DBManager;
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class Discord;
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class MusicManager;
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class ULogger;
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class WSProxy;
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/**
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* @brief The class that represents the actual server as it is.
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*/
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class Server : public QObject
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{
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Q_OBJECT
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public:
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/**
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* @brief Creates a Server instance.
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*
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* @param p_port The TCP port to listen for connections on.
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* @param p_ws_port The WebSocket port to listen for connections on.
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* @param parent Qt-based parent, passed along to inherited constructor from QObject.
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*/
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Server(int p_port, int p_ws_port, QObject *parent = nullptr);
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/**
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* @brief Destructor for the Server class.
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*
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* @details Marks every Client, the WSProxy, the underlying #server, and the database manager to be deleted later.
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*/
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~Server();
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/**
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* @brief Starts the server.
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*
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* @details Amongst other things, this function starts the listening on the given TCP port, sets up the server
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* according to the configuration file, and starts listening on the WebSocket port if it is not `-1`.
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*
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* Advertising is not done here -- see Advertiser::contactMasterServer() for that.
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*/
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void start();
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/**
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* @brief Enum to specifc different targets to send altered packets to a specific usergroup.
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*/
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enum class TARGET_TYPE
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{
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AUTHENTICATED,
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MODCHAT,
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ADVERT
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};
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Q_ENUM(TARGET_TYPE)
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/**
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* @brief Returns a list of all clients currently in the server.
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*
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* @return A list of all clients currently in the server.
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*/
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QVector<AOClient *> getClients();
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/**
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* @brief Gets a pointer to a client by IPID.
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*
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* @param ipid The IPID to look for.
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*
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* @return A pointer to the client if found, a nullpointer if not.
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*
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* @see Server::getClientsByIpid() to get all clients ran by the same user.
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*/
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AOClient *getClient(QString ipid);
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/**
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* @brief Gets a list of pointers to all clients with the given IPID.
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*
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* @param ipid The IPID to look for.
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*
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* @return A list of clients whose IPID match. List may be empty.
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*/
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QList<AOClient *> getClientsByIpid(QString ipid);
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/**
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* @brief Gets a pointer to a client by user ID.
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*
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* @param id The user ID to look for.
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*
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* @return A pointer to the client if found, a nullpointer if not.
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*/
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AOClient *getClientByID(int id);
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/**
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* @brief Returns the overall player count in the server.
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*
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* @return The overall player count in the server.
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*/
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int getPlayerCount();
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/**
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* @brief Returns a list of the available characters on the server to use.
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*
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* @return A list of the available characters on the server to use.
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*/
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QStringList getCharacters();
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/**
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* @brief Returns the count of available characters on the server to use.
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*
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* @return The count of available characters on the server to use.
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*/
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int getCharacterCount();
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/**
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* @brief Get the available character by index.
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*
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* @param f_chr_id The index of the character.
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*
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* @return The character if it exist, otherwise an empty stirng.
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*/
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QString getCharacterById(int f_chr_id);
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/**
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* @brief Updates which characters are taken in the given area, and sends out an update packet to
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* all clients present the area.
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*
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* @param area The area in which to update the list of characters.
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*/
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void updateCharsTaken(AreaData *area);
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/**
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* @brief Sends a packet to all clients in a given area.
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*
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* @param packet The packet to send to the clients.
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*
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* @param area_index The index of the area to look for clients in.
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*
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* @note Does nothing if an area by the given index does not exist.
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*/
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void broadcast(AOPacket packet, int area_index);
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/**
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* @brief Sends a packet to all clients in the server.
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*
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* @param packet The packet to send to the clients.
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*/
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void broadcast(AOPacket packet);
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/**
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* @brief Sends a packet to a specific usergroup..
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*
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* @param The packet to send to the clients.
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*
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* @param ENUM to determine the targets of the altered packet.
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*/
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void broadcast(AOPacket packet, TARGET_TYPE target);
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/**
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* @brief Sends a packet to clients, sends an altered packet to a specific usergroup.
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*
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* @param The packet to send to the clients.
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*
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* @param The altered packet to send to the other clients.
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*
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* @param ENUM to determine the targets of the altered packet.
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*/
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void broadcast(AOPacket packet, AOPacket other_packet, enum TARGET_TYPE target);
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/**
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* @brief Sends a packet to a single client.
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*
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* @param The packet send to the client.
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*
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* @param The temporary userID of the client.
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*/
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void unicast(AOPacket f_packet, int f_client_id);
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/**
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* @brief Returns the character's character ID (= their index in the character list).
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*
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* @param char_name The 'internal' name for the character whose character ID to look up. This is equivalent to
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* the name of the directory of the character.
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*
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* @return The character ID if a character with that name exists in the character selection list, `-1` if not.
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*/
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int getCharID(QString char_name);
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/**
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* @brief Checks if an IP is in a subnet of the IPBanlist.
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**/
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bool isIPBanned(QHostAddress f_remote_IP);
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/**
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* @brief Returns the list of areas in the server.
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*
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* @return A list of areas.
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*/
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QVector<AreaData *> getAreas();
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/**
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* @brief Returns the number of areas in the server.
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*/
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int getAreaCount();
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/**
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* @brief Returns a pointer to the area associated with the index.
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*
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* @param f_area_id The index of the area.
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*
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* @return A pointer to the area or null.
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*/
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AreaData *getAreaById(int f_area_id);
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/**
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* @brief Getter for an area specific buffer from the logger.
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*/
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QQueue<QString> getAreaBuffer(const QString &f_areaName);
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/**
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* @brief The names of the areas on the server.
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*
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* @return A list of names.
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*/
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QStringList getAreaNames();
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/**
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* @brief Returns the name of the area associated with the index.
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*
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* @param f_area_id The index of the area.
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*
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* @return The name of the area or empty.
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*/
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QString getAreaName(int f_area_id);
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/**
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* @brief Returns the available songs on the server.
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*
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* @return A list of songs.
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*/
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QStringList getMusicList();
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/**
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* @brief Returns the available backgrounds on the server.
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*
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* @return A list of backgrounds.
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*/
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QStringList getBackgrounds();
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/**
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* @brief Returns a pointer to a database manager.
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*
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* @return A pointer to database manager.
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*/
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DBManager *getDatabaseManager();
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ACLRolesHandler *getACLRolesHandler();
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/**
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* @brief The server-wide global timer.
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*/
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QTimer *timer;
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QStringList getCursedCharsTaken(AOClient *client, QStringList chars_taken);
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/**
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* @brief Returns whatever a game message may be broadcasted or not.
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*
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* @return True if expired; false otherwise.
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*/
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bool isMessageAllowed() const;
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/**
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* @brief Starts a global timer that determines whatever a game message may be broadcasted or not.
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*
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* @param f_duration The duration of the message floodguard timer.
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*/
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void startMessageFloodguard(int f_duration);
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/**
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* @brief Attempts to parse a IPv6 mapped IPv4 to an IPv4.
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*/
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QHostAddress parseToIPv4(QHostAddress f_remote_ip);
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public slots:
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/**
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* @brief Convenience class to call a reload of available configuraiton elements.
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*/
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void reloadSettings();
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/**
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* @brief Handles a new connection.
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*
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* @details The function creates an AOClient to represent the user, assigns a user ID to them, and
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* checks if the client is banned.
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*/
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void clientConnected();
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/**
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* @brief Method to construct and reconstruct Discord Webhook Integration.
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*
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* @details Constructs or rebuilds Discord Object during server startup and configuration reload.
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*/
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void handleDiscordIntegration();
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/**
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* @brief Marks a userID as free and ads it back to the available client id queue.
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*/
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void markIDFree(const int &f_user_id);
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signals:
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/**
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* @brief Sends the server name and description, emitted by /reload.
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*
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* @param p_name The server name.
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* @param p_desc The server description.
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*/
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void reloadRequest(QString p_name, QString p_desc);
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/**
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* @brief This signal is emitted whenever the current player count has changed.
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*
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* @param f_current_player The player count at the time the signal was emitted.
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*/
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void playerCountUpdated(int f_current_players);
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/**
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* @brief Triggers a partial update of the modern advertiser as some information, such as ports
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* can't be updated while the server is running.
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*/
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void updateHTTPConfiguration();
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/**
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* @brief Sends a modcall webhook request, emitted by AOClient::pktModcall.
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*
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* @param f_name The character or OOC name of the client who sent the modcall.
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* @param f_area The name of the area the modcall was sent from.
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* @param f_reason The reason the client specified for the modcall.
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* @param f_buffer The area's log buffer.
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*/
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void modcallWebhookRequest(const QString &f_name, const QString &f_area, const QString &f_reason, const QQueue<QString> &f_buffer);
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/**
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* @brief Sends a ban webhook request, emitted by AOClient::cmdBan
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* @param f_ipid The IPID of the banned client.
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* @param f_moderator The moderator who issued the ban.
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* @param f_duration The duration of the ban in a human readable format.
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* @param f_reason The reason for the ban.
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* @param f_banID The ID of the issued ban.
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*/
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void banWebhookRequest(const QString &f_ipid, const QString &f_moderator, const QString &f_duration, const QString &f_reason, const int &f_banID);
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/**
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* @brief Signal connected to universal logger. Logs a client connection attempt.
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* @param f_ip_address The IP Address of the incoming connection.
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* @param f_ipid The IPID of the incoming connection.
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* @param f_hdid The HDID of the incoming connection.
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*/
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void logConnectionAttempt(const QString &f_ip_address, const QString &f_ipid, const QString &f_hwid);
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private:
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/**
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* @brief The proxy used for WebSocket connections.
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*
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* @see WSProxy and WSClient for an explanation as to why this is a thing.
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*/
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WSProxy *proxy;
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/**
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* @brief Listens for incoming TCP connections.
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*/
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QTcpServer *server;
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/**
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* @brief Handles Discord webhooks.
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*/
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Discord *discord;
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/**
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* @brief Handles HTTP server advertising.
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*/
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Advertiser *ms3_Advertiser;
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/**
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* @brief Advertises the server in a regular intervall.
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*/
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QTimer *AdvertiserTimer;
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/**
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* @brief Handles the universal log framework.
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*/
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ULogger *logger;
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/**
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* @brief Handles all musiclists.
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*/
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MusicManager *music_manager;
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/**
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* @brief The port through which the server will accept TCP connections.
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*/
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int port;
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/**
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* @brief The port through which the server will accept WebSocket connections.
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*/
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int ws_port;
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/**
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* @brief The collection of all currently connected clients.
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*/
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QVector<AOClient *> m_clients;
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/**
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* @brief Collection of all clients with their userID as key.
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*/
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QHash<int, AOClient *> m_clients_ids;
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/**
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* @brief Stack of all available IDs for clients. When this is empty the server
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* rejects any new connection attempt.
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*/
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QStack<int> m_available_ids;
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/**
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* @brief The overall player count in the server.
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*/
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int m_player_count;
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/**
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* @brief The characters available on the server to use.
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*/
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QStringList m_characters;
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/**
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* @brief The areas on the server.
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*/
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QVector<AreaData *> m_areas;
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/**
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* @brief The names of the areas on the server.
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*
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* @details Equivalent to iterating over #areas and getting the area names individually, but grouped together
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* here for faster access.
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*/
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QStringList m_area_names;
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/**
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* @brief The available songs on the server.
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*
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* @details Does **not** include the area names, the actual music list packet should be constructed from
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* #area_names and this combined.
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*/
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QStringList m_music_list;
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/**
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* @brief The backgrounds on the server that may be used in areas.
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*/
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QStringList m_backgrounds;
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/**
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* @brief Collection of all IPs that are banned.
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*/
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QStringList m_ipban_list;
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/**
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* @brief Timer until the next IC message can be sent.
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*/
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QTimer *m_message_floodguard_timer;
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/**
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* @brief If false, IC messages will be rejected.
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*/
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bool m_can_send_ic_messages = true;
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/**
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* @brief The database manager on the server, used to store users' bans and authorisation details.
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*/
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DBManager *db_manager;
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ACLRolesHandler *acl_roles_handler;
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/**
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* @brief Connects new AOClient to logger and disconnect handling.
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**/
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void hookupAOClient(AOClient *client);
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private slots:
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/**
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* @brief Increase the current player count by one.
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*/
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void increasePlayerCount();
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/**
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* @brief Decrease the current player count based on the client id provided.
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*
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* @param f_client_id The client id of the client to check.
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*/
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void decreasePlayerCount();
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/**
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* @brief Allow game messages to be broadcasted.
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*/
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void allowMessage();
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};
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#endif // SERVER_H
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