Delphi DLL

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). Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, SFtp, SshKey;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
sftp: HCkSFtp;
domain: PWideChar;
port: Integer;
sshKey: HCkSshKey;
keyText: PWideChar;
remoteFilePath: PWideChar;
localFilePath: PWideChar;

begin
success := False;

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

sftp := CkSFtp_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 := CkSFtp_Connect(sftp,domain,port);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    Exit;
  end;

// Load your AWS SFTP private key PEM file..
sshKey := CkSshKey_Create();
keyText := CkSshKey__loadText(sshKey,'qa_data/pem/s3_sftp_privateKey.pem');
if (CkSshKey_getLastMethodSuccess(sshKey) <> True) then
  begin
    Memo1.Lines.Add(CkSshKey__lastErrorText(sshKey));
    Exit;
  end;
success := CkSshKey_FromOpenSshPrivateKey(sshKey,keyText);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSshKey__lastErrorText(sshKey));
    Exit;
  end;

// Authenticate with the SSH server using the private key.
success := CkSFtp_AuthenticatePk(sftp,'myUsername',sshKey);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    Exit;
  end;

// After authenticating, the SFTP subsystem must be initialized:
success := CkSFtp_InitializeSftp(sftp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    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 := CkSFtp_UploadFileByName(sftp,remoteFilePath,localFilePath);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSFtp__lastErrorText(sftp));
    Exit;
  end;

Memo1.Lines.Add('Success.');

CkSFtp_Dispose(sftp);
CkSshKey_Dispose(sshKey);

end;