(Java) 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.

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

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

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    String integrationKey = "DIMS3V5QDVG9J9ABRXC4";
    String secretKey = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab";

    CkHttp http = new CkHttp();

    http.put_Accept("application/json");

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

    // 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.put_Login(integrationKey);
    http.put_Password(secretKey);

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

    CkHttpResponse resp = http.PostUrlEncoded(url,req);
    if (http.get_LastMethodSuccess() == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    System.out.println("status code = " + resp.get_StatusCode());

    CkJsonObject json = new CkJsonObject();
    boolean success = json.Load(resp.bodyStr());
    json.put_EmitCompact(false);
    System.out.println(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.put_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.put_J(j);
            strVal = json.stringOf("response.devices[i].capabilities[j]");
            j = j+1;
            }

        i = i+1;
        }
  }
}