network: Add initial files and enet dependency

src/network/room.h

@@ -0,0 +1,173 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <string>
+#include <vector>
+#include "common/common_types.h"
+#include "network/verify_user.h"
+
+namespace Network {
+
+constexpr u32 network_version = 4; ///< The version of this Room and RoomMember
+
+constexpr u16 DefaultRoomPort = 24872;
+
+constexpr u32 MaxMessageSize = 500;
+
+/// Maximum number of concurrent connections allowed to this room.
+static constexpr u32 MaxConcurrentConnections = 254;
+
+constexpr std::size_t NumChannels = 1; // Number of channels used for the connection
+
+struct RoomInformation {
+    std::string name;           ///< Name of the server
+    std::string description;    ///< Server description
+    u32 member_slots;           ///< Maximum number of members in this room
+    u16 port;                   ///< The port of this room
+    std::string preferred_game; ///< Game to advertise that you want to play
+    u64 preferred_game_id;      ///< Title ID for the advertised game
+    std::string host_username;  ///< Forum username of the host
+    bool enable_citra_mods;     ///< Allow Citra Moderators to moderate on this room
+};
+
+struct GameInfo {
+    std::string name{""};
+    u64 id{0};
+};
+
+using MacAddress = std::array<u8, 6>;
+/// A special MAC address that tells the room we're joining to assign us a MAC address
+/// automatically.
+constexpr MacAddress NoPreferredMac = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+
+// 802.11 broadcast MAC address
+constexpr MacAddress BroadcastMac = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+
+// The different types of messages that can be sent. The first byte of each packet defines the type
+enum RoomMessageTypes : u8 {
+    IdJoinRequest = 1,
+    IdJoinSuccess,
+    IdRoomInformation,
+    IdSetGameInfo,
+    IdWifiPacket,
+    IdChatMessage,
+    IdNameCollision,
+    IdMacCollision,
+    IdVersionMismatch,
+    IdWrongPassword,
+    IdCloseRoom,
+    IdRoomIsFull,
+    IdConsoleIdCollision,
+    IdStatusMessage,
+    IdHostKicked,
+    IdHostBanned,
+    /// Moderation requests
+    IdModKick,
+    IdModBan,
+    IdModUnban,
+    IdModGetBanList,
+    // Moderation responses
+    IdModBanListResponse,
+    IdModPermissionDenied,
+    IdModNoSuchUser,
+    IdJoinSuccessAsMod,
+};
+
+/// Types of system status messages
+enum StatusMessageTypes : u8 {
+    IdMemberJoin = 1,  ///< Member joining
+    IdMemberLeave,     ///< Member leaving
+    IdMemberKicked,    ///< A member is kicked from the room
+    IdMemberBanned,    ///< A member is banned from the room
+    IdAddressUnbanned, ///< A username / ip address is unbanned from the room
+};
+
+/// This is what a server [person creating a server] would use.
+class Room final {
+public:
+    enum class State : u8 {
+        Open,   ///< The room is open and ready to accept connections.
+        Closed, ///< The room is not opened and can not accept connections.
+    };
+
+    struct Member {
+        std::string nickname;     ///< The nickname of the member.
+        std::string username;     ///< The web services username of the member. Can be empty.
+        std::string display_name; ///< The web services display name of the member. Can be empty.
+        std::string avatar_url;   ///< Url to the member's avatar. Can be empty.
+        GameInfo game_info;       ///< The current game of the member
+        MacAddress mac_address;   ///< The assigned mac address of the member.
+    };
+
+    Room();
+    ~Room();
+
+    /**
+     * Gets the current state of the room.
+     */
+    State GetState() const;
+
+    /**
+     * Gets the room information of the room.
+     */
+    const RoomInformation& GetRoomInformation() const;
+
+    /**
+     * Gets the verify UID of this room.
+     */
+    std::string GetVerifyUID() const;
+
+    /**
+     * Gets a list of the mbmers connected to the room.
+     */
+    std::vector<Member> GetRoomMemberList() const;
+
+    /**
+     * Checks if the room is password protected
+     */
+    bool HasPassword() const;
+
+    using UsernameBanList = std::vector<std::string>;
+    using IPBanList = std::vector<std::string>;
+
+    using BanList = std::pair<UsernameBanList, IPBanList>;
+
+    /**
+     * Creates the socket for this room. Will bind to default address if
+     * server is empty string.
+     */
+    bool Create(const std::string& name, const std::string& description = "",
+                const std::string& server = "", u16 server_port = DefaultRoomPort,
+                const std::string& password = "",
+                const u32 max_connections = MaxConcurrentConnections,
+                const std::string& host_username = "", const std::string& preferred_game = "",
+                u64 preferred_game_id = 0,
+                std::unique_ptr<VerifyUser::Backend> verify_backend = nullptr,
+                const BanList& ban_list = {}, bool enable_citra_mods = false);
+
+    /**
+     * Sets the verification GUID of the room.
+     */
+    void SetVerifyUID(const std::string& uid);
+
+    /**
+     * Gets the ban list (including banned forum usernames and IPs) of the room.
+     */
+    BanList GetBanList() const;
+
+    /**
+     * Destroys the socket
+     */
+    void Destroy();
+
+private:
+    class RoomImpl;
+    std::unique_ptr<RoomImpl> room_impl;
+};
+
+} // namespace Network