Pascal (Lazarus/Delphi)

AWS Transfer for SFTP (Amazon S3)

See more SFTP Examples

Once you've setup your AWS Transfer for SFTP in the AWS Console, interacting with it is no different than any other SSH/SFTP server. AWS will provide a private key in PEM format. It is used for authentication (instead of a password). Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.SFtp,
  Chilkat.SshKey;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  sftp: TSFtp;
  domain: string;
  port: Integer;
  sshKey: TSshKey;
  keyText: string;
  remoteFilePath: string;
  localFilePath: string;

begin
  success := False;

  //  This example assumes the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  sftp := TSFtp.Create;

  //  Connect to the AWS SFTP server.
  //  Change the domain to your value.
  domain := 's-123456df999999fab.server.transfer.eu-west-2.amazonaws.com';
  port := 22;
  success := sftp.Connect(domain,port);
  if (success = False) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  //  Load your AWS SFTP private key PEM file..
  sshKey := TSshKey.Create;
  keyText := sshKey.LoadText('qa_data/pem/s3_sftp_privateKey.pem');
  if (sshKey.LastMethodSuccess <> True) then
    begin
      WriteLn(sshKey.LastErrorText);
      Exit;
    end;
  success := sshKey.FromOpenSshPrivateKey(keyText);
  if (success = False) then
    begin
      WriteLn(sshKey.LastErrorText);
      Exit;
    end;

  //  Authenticate with the SSH server using the private key.
  success := sftp.AuthenticatePk('myUsername',sshKey);
  if (success = False) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  //  After authenticating, the SFTP subsystem must be initialized:
  success := sftp.InitializeSftp();
  if (success = False) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  //  Upload from the local file to the SSH server.
  //  Important -- the remote filepath is the 1st argument,
  //  the local filepath is the 2nd argument;
  remoteFilePath := 'hamlet.xml';
  localFilePath := 'c:/temp/hamlet.xml';

  success := sftp.UploadFileByName(remoteFilePath,localFilePath);
  if (success = False) then
    begin
      WriteLn(sftp.LastErrorText);
      Exit;
    end;

  WriteLn('Success.');


  sftp.Free;
  sshKey.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.