Pascal (Lazarus/Delphi)

Using WS_FTP Self-signed Certificate file (.crt) and Private Key File. (.key)

See more FTP Examples

Demonstrates how to use a self-signed certificate created by WS_FTP with Chilkat FTP2.

Note: It is usually not necessary for the FTP client to use a client-side certificate. Most FTP servers using SSL and TLS connections (explicit or implicit) do not require client-side certs. In addition, some high-security FTP servers require "real" certificates -- meaning certificates issued by a real certificate authority with a chain of authentication that leads to a trusted root certificate. The certificates created by WS_FTP are self-signed and untrusted.

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.Cert,
  Chilkat.Ftp2,
  Chilkat.CertStore,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  ftp: TFtp2;
  certStore: TCertStore;
  jsonCN: TJsonObject;
  cert: TCert;

begin
  success := False;

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

  //  Important:  Before running this program, convert your
  //  .crt and .key files to a .p12 using OpenSSL:
  //  The command is this:
  //  openssl pkcs12 -export -in test.crt -inkey test.key -out test.p12
  //  

  ftp := TFtp2.Create;

  ftp.Hostname := 'ftp.example.com';
  ftp.Port := 21;
  ftp.Username := 'testLogin';
  ftp.Password := 'testPassword';

  //  This example will use explict TLS/SSL.
  //  Establish an explicit secure channel after connection
  //  on the standard FTP port 21.
  ftp.AuthTls := True;

  //  The Ssl property is for establishing an implicit SSL connection
  //  on port 990.  Because this example uses explicit SSL, it 
  //  should remain False.
  ftp.Ssl := False;

  //  Create an instance of a certificate store object, load a .p12 file,
  //  locate the certificate we need, and use it for signing.
  //  (a P12/PFX file may contain more than one certificate.)
  certStore := TCertStore.Create;
  //  The 1st argument is the filename, the 2nd arg is the 
  //  .p12 file's password.  (OpenSSL will prompty you to set a password
  //  when converting the .crt and .key into a .p12).
  success := certStore.LoadPfxFile('test.p12','secret');
  if (success <> True) then
    begin
      WriteLn(certStore.LastErrorText);
      Exit;
    end;

  jsonCN := TJsonObject.Create;
  jsonCN.UpdateString('CN','cert common name');

  cert := TCert.Create;
  success := certStore.FindCert(jsonCN,cert);
  if (success = False) then
    begin
      WriteLn(certStore.LastErrorText);
      Exit;
    end;

  success := ftp.SetSslClientCert(cert);

  //  Connect and login to the FTP server.
  success := ftp.Connect();
  if (success <> True) then
    begin
      WriteLn(ftp.LastErrorText);
      Exit;
    end
  else
    begin
      //  LastErrorText contains information even when
      //  successful. This allows you to visually verify
      //  that the secure connection actually occurred.
      WriteLn(ftp.LastErrorText);
    end;

  WriteLn('Secure FTP Channel Established!');
  WriteLn(ftp.LastErrorText);

  //  Do whatever you're doing to do ...
  //  upload files, download files, etc...

  //  ...
  //  ...

  success := ftp.Disconnect();


  ftp.Free;
  certStore.Free;
  jsonCN.Free;
  cert.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.