C#

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. C#

bool success = false;

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

string integrationKey = "DIMS3V5QDVG9J9ABRXC4";
string secretKey = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab";

Chilkat.Http http = new Chilkat.Http();

http.Accept = "application/json";

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

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

Chilkat.HttpRequest req = new Chilkat.HttpRequest();
req.AddParam("username","matt");

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

Chilkat.HttpResponse resp = new Chilkat.HttpResponse();
success = http.HttpReq(url,req,resp);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Debug.WriteLine("status code = " + Convert.ToString(resp.StatusCode));

Chilkat.JsonObject json = new Chilkat.JsonObject();
success = json.Load(resp.BodyStr);
json.EmitCompact = false;
Debug.WriteLine(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

string device;
string display_name;
string name;
string number;
string v_type;
int j;
int count_j;
string strVal;

string responseResult = json.StringOf("response.result");
string responseStatus_msg = json.StringOf("response.status_msg");
string stat = json.StringOf("stat");
int i = 0;
int count_i = json.SizeOfArray("response.devices");
while (i < count_i) {
    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) {
        json.J = j;
        strVal = json.StringOf("response.devices[i].capabilities[j]");
        j = j + 1;
    }

    i = i + 1;
}