Pascal (Lazarus/Delphi)

Client Certificate in REST (USB Token or Smartcard)

See more REST Examples

Demonstrates how to use a client certificate with a REST connection where the certificate and private key are located on a USB token or smart card. 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.Rest,
  Chilkat.Cert,
  Chilkat.Socket;

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

procedure RunDemo;
var
  success: Boolean;
  rest: TRest;
  socket: TSocket;
  cert: TCert;
  bTls: Boolean;
  port: Integer;
  maxWaitMs: Integer;
  bAutoReconnect: Boolean;
  responseJson: string;

begin
  success := False;

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

  //  This example shows how to use the Chilkat socket object's connection.
  rest := TRest.Create;
  socket := TSocket.Create;

  //  Set the certificate to be used for mutual TLS authentication
  cert := TCert.Create;

  //  If the smartcard or token requires a PIN...
  cert.SmartCardPin := '000000';

  success := cert.LoadFromSmartcard('');
  if (success <> True) then
    begin
      WriteLn(cert.LastErrorText);
      Exit;
    end;

  success := socket.SetSslClientCert(cert);
  if (success <> True) then
    begin
      WriteLn(socket.LastErrorText);
      Exit;
    end;

  //  Establish the connection using the socket object (with client certificate authentication).
  bTls := True;
  port := 443;
  maxWaitMs := 5000;
  success := socket.Connect('www.example.com',port,bTls,maxWaitMs);
  if (success <> True) then
    begin
      WriteLn('Connect Failure Error Code: ' + socket.ConnectFailReason);
      WriteLn(socket.LastErrorText);
      Exit;
    end;

  bAutoReconnect := True;

  //  Use the connection:
  success := rest.UseConnection(socket,bAutoReconnect);
  if (success <> True) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  //  At this point we are connected and can make REST calls...
  //  For example..
  responseJson := rest.FullRequestNoBody('GET','/someQuery');
  if (rest.LastMethodSuccess <> True) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;


  rest.Free;
  socket.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.