Delphi ActiveX Requires Chilkat v11.0.0+

Duo Auth API - Preauth

See more Duo Auth MFA Examples

The /preauth endpoint determines whether a user is authorized to log in, and (if so) returns the user's available authentication factors. Delphi ActiveX

var
success: Integer;
integrationKey: WideString;
secretKey: WideString;
http: TChilkatHttp;
url: WideString;
req: TChilkatHttpRequest;
resp: TChilkatHttpResponse;
json: TChilkatJsonObject;
device: WideString;
display_name: WideString;
name: WideString;
number: WideString;
v_type: WideString;
j: Integer;
count_j: Integer;
strVal: WideString;
responseResult: WideString;
responseStatus_msg: WideString;
stat: WideString;
i: Integer;
count_i: Integer;

begin
success := 0;

//  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/preauth';

http.Login := integrationKey;
http.Password := secretKey;

req := TChilkatHttpRequest.Create(Self);
req.AddParam('username','matt');

req.HttpVerb := 'POST';
req.ContentType := 'application/x-www-form-urlencoded';

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpReq(url,req.ControlInterface,resp.ControlInterface);
if (success = 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": {
//      "devices": [
//        {
//          "capabilities": [
//            "auto",
//            "push",
//            "sms",
//            "mobile_otp"
//          ],
//          "device": "DP6GYVTQ5NK82BMR851F",
//          "display_name": "iOS (XXX-XXX-1871)",
//          "name": "",
//          "number": "XXX-XXX-1871",
//          "type": "phone"
//        }
//      ],
//      "result": "auth",
//      "status_msg": "Account is active"
//    },
//    "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_msg := json.StringOf('response.status_msg');
stat := json.StringOf('stat');
i := 0;
count_i := json.SizeOfArray('response.devices');
while i < count_i do
  begin
    json.I := i;
    device := json.StringOf('response.devices[i].device');
    display_name := json.StringOf('response.devices[i].display_name');
    name := json.StringOf('response.devices[i].name');
    number := json.StringOf('response.devices[i].number');
    v_type := json.StringOf('response.devices[i].type');
    j := 0;
    count_j := json.SizeOfArray('response.devices[i].capabilities');
    while j < count_j do
      begin
        json.J := j;
        strVal := json.StringOf('response.devices[i].capabilities[j]');
        j := j + 1;
      end;

    i := i + 1;
  end;