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FTPS: Configure user authentication

There are two ways to authenticate server users available:

1. Use internal users storage maintained by TElSimpleFTPSServer in its Users property:

   C#:

   
   	Server.Users.AddFTPSUser("UserName", "Password");
   	Server.Users.DeleteUser("UserName");
   

   Delphi:

   
   	Server.Users.AddFTPSUser('UserName', 'Password');
   	Server.Users.DeleteUser('UserName');
   

   TElSimpleFTPSServer will check the user password during authentication.
2. Use the event based authentication using OnAuthAttempt event, the same as in TElFTPSServer:

   C#:

   
   static void Main(string[] args)
   {
   	TElSimpleFTPSServer Server = new TElSimpleFTPSServer();
   	Server.OnAuthAttempt += ElSimpleFtpsServerOnOnAuthAttempt;
   	...
   }
   
   private static void ElSimpleFtpsServerOnOnAuthAttempt(object sender, string username, string password, ref bool allow)
   {
   	allow = false;
   
   	SBSimpleFTPSServer.TElSimpleFTPSServerSessionThread Sender = sender as TElSimpleFTPSServerSessionThread;
   	try
   	{
   		User user = UserRepository.Login(username, password);
   		allow = true;
   
   		// Create a new instance of the filesystem adapter
   		Sender.FileSystemAdapter = new MyCustomFileSystemAdapter(nil);
   
   		// set the virtual root dynamically
   		Sender.FileSystemAdapter.BasePath = UsersVirtualRootDir;
   
   		return;
   	}
   	catch
   	{
   	}
   }
   

Also it is possible to combine both ways. In this case the event result will override results of the internal check.

How To articles about server-side FTPS questions

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