(Delphi ActiveX) Duo Auth API - Auth

See more Duo Auth MFA Examples

The /auth endpoint performs second-factor authentication for a user by sending a push notification to the user's smartphone app, verifying a passcode, or placing a phone call. It is also used to send the user a new batch of passcodes via SMS.

Note: This example requires Chilkat v9.5.0.89 or greater.

For more information, see https://duo.com/docs/authapi#/auth

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
integrationKey: WideString;
secretKey: WideString;
http: TChilkatHttp;
url: WideString;
req: TChilkatHttpRequest;
resp: IChilkatHttpResponse;
json: TChilkatJsonObject;
success: Integer;
responseResult: WideString;
responseStatus: WideString;
responseStatus_msg: WideString;
stat: WideString;

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

integrationKey := 'DIMS3V5QDVG9J9ABRXC4';
secretKey := 'HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab';

http := TChilkatHttp.Create(Self);

http.Accept := 'application/json';

// Use your own hostname here:
url := 'https://api-a03782e1.duosecurity.com/auth/v2/auth';

// This example requires Chilkat v9.5.0.89 or greater because Chilkat will automatically
// generate and send the HMAC signature for the requires based on the integration key and secret key.
http.Login := integrationKey;
http.Password := secretKey;

req := TChilkatHttpRequest.Create(Self);
req.AddParam('username','matt');
req.AddParam('factor','push');
// The device ID can be obtained from the preauth response.  See Duo Preauth Example
req.AddParam('device','DP6GYVTQ5NK82BMR851F');

resp := http.PostUrlEncoded(url,req.ControlInterface);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('status code = ' + IntToStr(resp.StatusCode));

json := TChilkatJsonObject.Create(Self);
success := json.Load(resp.BodyStr);
json.EmitCompact := 0;
Memo1.Lines.Add(json.Emit());

// Sample successful output:

// status code = 200

// {
//   "response": {
//     "result": "allow",
//     "status": "allow",
//     "status_msg": "Success. Logging you in..."
//   },
//   "stat": "OK"
// }

// Sample code to parse the above JSON response..

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

responseResult := json.StringOf('response.result');
responseStatus := json.StringOf('response.status');
responseStatus_msg := json.StringOf('response.status_msg');
stat := json.StringOf('stat');
end;