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Lazarus Pascal

Configure HTTP Basic Authentication with SecureString

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Demonstrates Rest.SetAuthBasicSecure, which configures HTTP Basic authentication using SecureString objects instead of plaintext strings.

Background. A SecureString keeps sensitive values encrypted in memory, reducing the window in which credentials appear as readable plaintext. This is otherwise equivalent to SetAuthBasic.

Chilkat Lazarus Pascal Downloads

Lazarus Pascal
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.SecureString,
  Chilkat.Rest;

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

procedure RunDemo;
var
  success: Boolean;
  rest: TRest;
  bTls: Boolean;
  bAutoReconnect: Boolean;
  ssUsername: TSecureString;
  ssPassword: TSecureString;
  responseText: string;

begin
  success := False;

  rest := TRest.Create;
  bTls := True;
  bAutoReconnect := True;
  success := rest.Connect('example.com',443,bTls,bAutoReconnect);
  if (success = False) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  //  SetAuthBasicSecure configures HTTP Basic authentication using SecureString objects, which keep
  //  the credentials encrypted in memory.
  //  Normally you would not hard-code secrets in source.  You should instead obtain them from an
  //  interactive prompt, environment variable, or a secrets vault.
  ssUsername := TSecureString.Create;
  ssUsername.Append('myUsername');
  ssPassword := TSecureString.Create;
  ssPassword.Append('myPassword');

  success := rest.SetAuthBasicSecure(ssUsername,ssPassword);
  if (success = False) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  responseText := rest.FullRequestNoBody('GET','/api/protected');
  if (rest.LastMethodSuccess = False) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;
  WriteLn(responseText);


  rest.Free;
  ssUsername.Free;
  ssPassword.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.