feat(Core): replace ACE network with Boost.Asio (#6574)

src/server/authserver/Server/AuthSession.h

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
+ * Copyright (C) 2021+ WarheadCore <https://github.com/WarheadCore>
+ */
+
+#ifndef __AUTHSESSION_H__
+#define __AUTHSESSION_H__
+
+#include "AsyncCallbackProcessor.h"
+#include "BigNumber.h"
+#include "ByteBuffer.h"
+#include "Common.h"
+#include "CryptoHash.h"
+#include "Optional.h"
+#include "Socket.h"
+#include "SRP6.h"
+#include "QueryResult.h"
+#include <memory>
+#include <boost/asio/ip/tcp.hpp>
+
+using boost::asio::ip::tcp;
+
+class Field;
+struct AuthHandler;
+
+enum AuthStatus
+{
+    STATUS_CHALLENGE = 0,
+    STATUS_LOGON_PROOF,
+    STATUS_RECONNECT_PROOF,
+    STATUS_AUTHED,
+    STATUS_WAITING_FOR_REALM_LIST,
+    STATUS_CLOSED
+};
+
+struct AccountInfo
+{
+    void LoadResult(Field* fields);
+
+    uint32 Id = 0;
+    std::string Login;
+    bool IsLockedToIP = false;
+    std::string LockCountry;
+    std::string LastIP;
+    uint32 FailedLogins = 0;
+    bool IsBanned = false;
+    bool IsPermanentlyBanned = false;
+    AccountTypes SecurityLevel = SEC_PLAYER;
+};
+
+class AuthSession : public Socket<AuthSession>
+{
+    typedef Socket<AuthSession> AuthSocket;
+
+public:
+    static std::unordered_map<uint8, AuthHandler> InitHandlers();
+
+    AuthSession(tcp::socket&& socket);
+
+    void Start() override;
+    bool Update() override;
+
+    void SendPacket(ByteBuffer& packet);
+
+protected:
+    void ReadHandler() override;
+
+private:
+    bool HandleLogonChallenge();
+    bool HandleLogonProof();
+    bool HandleReconnectChallenge();
+    bool HandleReconnectProof();
+    bool HandleRealmList();
+
+    void CheckIpCallback(PreparedQueryResult result);
+    void LogonChallengeCallback(PreparedQueryResult result);
+    void ReconnectChallengeCallback(PreparedQueryResult result);
+    void RealmListCallback(PreparedQueryResult result);
+
+    bool VerifyVersion(uint8 const* a, int32 aLength, Acore::Crypto::SHA1::Digest const& versionProof, bool isReconnect);
+
+    Optional<Acore::Crypto::SRP6> _srp6;
+    SessionKey _sessionKey = {};
+    std::array<uint8, 16> _reconnectProof = {};
+
+    AuthStatus _status;
+    AccountInfo _accountInfo;
+    Optional<std::vector<uint8>> _totpSecret;
+    std::string _localizationName;
+    std::string _os;
+    std::string _ipCountry;
+    uint16 _build;
+    uint8 _expversion;
+
+    QueryCallbackProcessor _queryProcessor;
+};
+
+#pragma pack(push, 1)
+
+struct AuthHandler
+{
+    AuthStatus status;
+    size_t packetSize;
+    bool (AuthSession::* handler)();
+};
+
+#pragma pack(pop)
+
+#endif