(Node.js) 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

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var integrationKey = "DIMS3V5QDVG9J9ABRXC4";
    var secretKey = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab";

    var http = new chilkat.Http();

    http.Accept = "application/json";

    // Use your own hostname here:
    var 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.Login = integrationKey;
    http.Password = secretKey;

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

    // resp: HttpResponse
    var resp = http.PostUrlEncoded(url,req);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    console.log("status code = " + resp.StatusCode);

    var json = new chilkat.JsonObject();
    var success = json.Load(resp.BodyStr);
    json.EmitCompact = false;
    console.log(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

    var device;
    var display_name;
    var name;
    var number;
    var v_type;
    var j;
    var count_j;
    var strVal;

    var responseResult = json.StringOf("response.result");
    var responseStatus_msg = json.StringOf("response.status_msg");
    var stat = json.StringOf("stat");
    var i = 0;
    var 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;
    }


}

chilkatExample();