Add DatabaseMySQL::DoesLoginServerAccountExist

loginserver/client.cpp

@@ -590,6 +590,7 @@ void Client::DoSuccessfulLogin(const std::string &user, int db_account_id, const
 	in.s_addr = connection->GetRemoteIP();
 
 	server.db->UpdateLSAccountData(db_account_id, std::string(inet_ntoa(in)));
+
 	GenerateKey();
 
 	account_id       = db_account_id;
@@ -674,6 +675,11 @@ void Client::CreateEQEmuAccount(const std::string &user, const std::string &pass
 	auto mode = server.options.GetEncryptionMode();
 	auto hash = eqcrypt_hash(user, pass, mode);
 
+	if (server.db->DoesLoginServerAccountExist(user, hash, "eqemu", id)) {
+		DoSuccessfulLogin(user, id, "eqemu");
+		return;
+	}
+
 	if (!server.db->CreateLoginDataWithID(user, hash, "eqemu", id)) {
 		DoFailedLogin();
 	}

loginserver/database_mysql.cpp

@@ -322,6 +322,39 @@ bool DatabaseMySQL::CreateLoginDataWithID(
 	return true;
 }
 
+/**
+ * @param name
+ * @param password
+ * @param loginserver
+ * @param id
+ * @return
+ */
+bool DatabaseMySQL::DoesLoginServerAccountExist(
+	const std::string &name,
+	const std::string &password,
+	const std::string &loginserver,
+	unsigned int id
+)
+{
+	if (id == 0) {
+		return false;
+	}
+
+	auto query = fmt::format(
+		"SELECT AccountName FROM {0} WHERE AccountName = '{1}' AND AccountLoginserver = '{2}'",
+		server.options.GetAccountTable(),
+		EscapeString(name),
+		EscapeString(loginserver)
+	);
+
+	auto results = QueryDatabase(query);
+	if (!results.Success() || results.RowCount() != 1) {
+		return false;
+	}
+
+	return true;
+}
+
 /**
  * @param name
  * @param loginserver

loginserver/database_mysql.h

@@ -87,8 +87,16 @@ public:
 		const std::string &loginserver,
 		unsigned int id
 	);
+
 	virtual void UpdateLoginHash(const std::string &name, const std::string &loginserver, const std::string &hash);
 
+	virtual bool DoesLoginServerAccountExist(
+		const std::string &name,
+		const std::string &password,
+		const std::string &loginserver,
+		unsigned int id
+	);
+
 	/**
 	 * Retrieves the world registration from the long and short names provided
 	 * Needed for world login procedure

loginserver/login_server.h

@@ -39,7 +39,7 @@ public:
 	LoginServer() : db(nullptr), server_manager(nullptr) { }
 
 	EQ::JsonConfigFile config;
-	Database *db;
+	DatabaseMySQL *db;
 	Options options;
 	ServerManager *server_manager;
 	ClientManager *client_manager;

loginserver/main.cpp

@@ -133,7 +133,7 @@ int main()
 	 */
 	Log(Logs::General, Logs::Login_Server, "MySQL Database Init.");
 
-	server.db = (Database *) new DatabaseMySQL(
+	server.db = new DatabaseMySQL(
 		server.config.GetVariableString("database", "user", "root"),
 		server.config.GetVariableString("database", "password", ""),
 		server.config.GetVariableString("database", "host", "localhost"),