private void HandleAuthentication(string username, string password)
{
var result = Authentication(username, password);
if (result != AuthenticationResult.SUCCESS)
{
LoginPacketFactory.AuthenticationFailed(_client, result);
return;
}
DbUser dbUser = _database.Users.First(x => x.Username.Equals(username, StringComparison.OrdinalIgnoreCase));
if (_server.IsClientConnected(dbUser.Id))
{
_client.Disconnect();
return;
}
dbUser.LastConnectionTime = DateTime.UtcNow;
_database.Users.Update(dbUser);
_database.SaveChanges();
_client.SetClientUserID(dbUser.Id);
LoginPacketFactory.AuthenticationSuccess(_client, result, dbUser);
}
public static void OnSelectServer(LoginClient client, IPacketStream packet)
{
if (packet.Length != 9)
{
return;
}
var selectServerPacket = new SelectServerPacket(packet);
var server = DependencyContainer.Instance.Resolve <ILoginServer>();
var worldInfo = server.GetWorldByID(selectServerPacket.WorldId);
if (worldInfo == null)
{
LoginPacketFactory.SelectServerFailed(client, SelectServer.CannotConnect);
return;
}
// For some reason, the current game.exe has version -1. Maybe this is somehow connected with decrypted packages?
// In any case, for now client version check is disabled.
if (worldInfo.BuildVersion != selectServerPacket.BuildClient && selectServerPacket.BuildClient != -1)
{
LoginPacketFactory.SelectServerFailed(client, SelectServer.VersionDoesntMatch);
return;
}
if (worldInfo.ConnectedUsers >= worldInfo.MaxAllowedUsers)
{
LoginPacketFactory.SelectServerFailed(client, SelectServer.ServerSaturated);
return;
}
LoginPacketFactory.SelectServerSuccess(client, worldInfo.Host);
}
private void HandleSelectServer(SelectServerPacket selectServerPacket)
{
var worldInfo = _server.GetWorldByID(selectServerPacket.WorldId);
if (worldInfo == null)
{
LoginPacketFactory.SelectServerFailed(_client, SelectServer.CannotConnect);
return;
}
// For some reason, the current game.exe has version -1. Maybe this is somehow connected with decrypted packages?
// In any case, for now client version check is disabled.
if (false && worldInfo.BuildVersion != selectServerPacket.BuildClient && selectServerPacket.BuildClient != -1)
{
LoginPacketFactory.SelectServerFailed(_client, SelectServer.VersionDoesntMatch);
return;
}
if (worldInfo.ConnectedUsers >= worldInfo.MaxAllowedUsers)
{
LoginPacketFactory.SelectServerFailed(_client, SelectServer.ServerSaturated);
return;
}
LoginPacketFactory.SelectServerSuccess(_client, worldInfo.Host);
}
public static void OnLoginRequest(LoginClient client, IPacketStream packet)
{
if (packet.Length != 52)
{
return;
}
var authenticationPacket = new AuthenticationPacket(packet);
var result = Authentication(authenticationPacket.Username, authenticationPacket.Password);
if (result != AuthenticationResult.SUCCESS)
{
LoginPacketFactory.AuthenticationFailed(client, result);
return;
}
var loginServer = DependencyContainer.Instance.Resolve <ILoginServer>();
using var database = DependencyContainer.Instance.Resolve <IDatabase>();
DbUser dbUser = database.Users.Get(x => x.Username.Equals(authenticationPacket.Username, StringComparison.OrdinalIgnoreCase));
if (loginServer.IsClientConnected(dbUser.Id))
{
client.Disconnect();
return;
}
dbUser.LastConnectionTime = DateTime.Now;
database.Users.Update(dbUser);
database.Complete();
client.SetClientUserID(dbUser.Id);
LoginPacketFactory.AuthenticationFailed(client, result, dbUser);
}
public static void OnSelectServer(LoginClient client, IPacketStream packet)
{
if (packet.Length != 9)
{
return;
}
var selectServerPacket = new SelectServerPacket(packet);
var server = DependencyContainer.Instance.Resolve <ILoginServer>();
var worldInfo = server.GetWorldByID(selectServerPacket.WorldId);
if (worldInfo == null)
{
LoginPacketFactory.SelectServerFailed(client, SelectServer.CannotConnect);
return;
}
if (worldInfo.BuildVersion != selectServerPacket.BuildClient)
{
LoginPacketFactory.SelectServerFailed(client, SelectServer.VersionDoesntMatch);
return;
}
if (worldInfo.ConnectedUsers >= worldInfo.MaxAllowedUsers)
{
LoginPacketFactory.SelectServerFailed(client, SelectServer.ServerSaturated);
return;
}
LoginPacketFactory.SelectServerSuccess(client, worldInfo.Host);
}
private void HandleAuthentication(AuthenticationPacket authenticationPacket)
{
var result = Authentication(authenticationPacket.Username, authenticationPacket.Password);
if (result != AuthenticationResult.SUCCESS)
{
LoginPacketFactory.AuthenticationFailed(_client, result);
return;
}
var loginServer = DependencyContainer.Instance.Resolve <ILoginServer>();
using var database = DependencyContainer.Instance.Resolve <IDatabase>();
DbUser dbUser = database.Users.First(x => x.Username.Equals(authenticationPacket.Username, StringComparison.OrdinalIgnoreCase));
if (loginServer.IsClientConnected(dbUser.Id))
{
_client.Disconnect();
return;
}
dbUser.LastConnectionTime = DateTime.Now;
database.Users.Update(dbUser);
database.SaveChanges();
_client.SetClientUserID(dbUser.Id);
LoginPacketFactory.AuthenticationSuccess(_client, result, dbUser);
}
/// <inheritdoc />
protected override void OnClientConnected(LoginClient client)
{
base.OnClientConnected(client);
LoginPacketFactory.SendLoginHandshake(client);
LoginManagers.Add(client.Id, _loginManagerFactory.CreateLoginManager(client, this));
client.OnPacketArrived += Client_OnPacketArrived;
}
private static void AuthenticationFailed(LoginClient client, ErrorType error, string reason, bool disconnectClient = true)
{
Logger.LogWarning($"Unable to authenticate user from {client.RemoteEndPoint}. Reason: {reason}");
LoginPacketFactory.SendLoginError(client, error);
if (disconnectClient)
{
client.Disconnect();
}
}
/// <inheritdoc />
protected override void OnClientConnected(LoginClient client)
{
LoginPacketFactory.SendLoginHandshake(client);
}
public static void OnLogin(LoginClient client, INetPacketStream packet)
{
var loginServer = DependencyContainer.Instance.Resolve <ILoginServer>();
var configuration = DependencyContainer.Instance.Resolve <LoginConfiguration>();
var certifyPacket = new CertifyPacket(packet, configuration.PasswordEncryption);
string password = null;
if (certifyPacket.BuildVersion != configuration.BuildVersion)
{
AuthenticationFailed(client, ErrorType.CERT_GENERAL, "bad client build version");
return;
}
if (configuration.PasswordEncryption)
{
byte[] encryptionKey = Aes.BuildEncryptionKeyFromString(configuration.EncryptionKey, 16);
password = Aes.DecryptByteArray(certifyPacket.EncryptedPassword, encryptionKey);
}
else
{
password = packet.Read <string>();
}
var authenticationService = DependencyContainer.Instance.Resolve <IAuthenticationService>();
var authenticationResult = authenticationService.Authenticate(certifyPacket.Username, password);
switch (authenticationResult)
{
case AuthenticationResult.BadUsername:
AuthenticationFailed(client, ErrorType.FLYFF_ACCOUNT, "bad username");
break;
case AuthenticationResult.BadPassword:
AuthenticationFailed(client, ErrorType.FLYFF_PASSWORD, "bad password");
break;
case AuthenticationResult.AccountSuspended:
// TODO
break;
case AuthenticationResult.AccountTemporarySuspended:
// TODO
break;
case AuthenticationResult.AccountDeleted:
AuthenticationFailed(client, ErrorType.ILLEGAL_ACCESS, "logged in with deleted account");
break;
case AuthenticationResult.Success:
if (loginServer.IsClientConnected(certifyPacket.Username))
{
AuthenticationFailed(client, ErrorType.DUPLICATE_ACCOUNT, "client already connected", disconnectClient: false);
return;
}
using (var database = DependencyContainer.Instance.Resolve <IDatabase>())
{
var user = database.Users.Get(x => x.Username.Equals(certifyPacket.Username, StringComparison.OrdinalIgnoreCase));
if (user == null)
{
AuthenticationFailed(client, ErrorType.ILLEGAL_ACCESS, "Cannot find user in database");
Logger.LogCritical($"Cannot find user '{certifyPacket.Username}' in database to update last connection time.");
return;
}
user.LastConnectionTime = DateTime.UtcNow;
database.Users.Update(user);
database.Complete();
}
LoginPacketFactory.SendServerList(client, certifyPacket.Username, loginServer.GetConnectedClusters());
client.SetClientUsername(certifyPacket.Username);
Logger.LogInformation($"User '{client.Username}' logged succesfully from {client.RemoteEndPoint}.");
break;
default:
break;
}
}