(Swift 2) Duo Auth API - Async Auth

See more Duo Auth MFA Examples

If you enable async, then your application will be able to retrieve real-time status updates from the authentication process, rather than receiving no information until the process is complete.

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

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

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

    var integrationKey: String? = "DIMS3V5QDVG9J9ABRXC4"
    var secretKey: String? = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab"

    let http = CkoHttp()

    http.Accept = "application/json"

    // Use your own hostname here:
    var url: String? = "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

    let req = CkoHttpRequest()
    req.AddParam("username", value: "matt")
    req.AddParam("factor", value: "push")
    // The device ID can be obtained from the preauth response.  See Duo Preauth Example
    req.AddParam("device", value: "DP6GYVTQ5NK82BMR851F")
    // Add the async param to get an immediate response, then periodically check for updates to find out when the MFA authentication completes for fails.
    req.AddParam("async", value: "1")

    var resp: CkoHttpResponse? = http.PostUrlEncoded(url, req: req)
    if http.LastMethodSuccess == false {
        print("\(http.LastErrorText)")
        return
    }

    print("status code = \(resp!.StatusCode.intValue)")

    let json = CkoJsonObject()
    var success: Bool = json.Load(resp!.BodyStr)
    json.EmitCompact = false
    print("\(json.Emit())")

    if resp!.StatusCode.intValue != 200 {
        resp = nil
        return
    }

    // Sample successful output:

    // status code = 200

    // {
    //   "stat": "OK",
    //   "response": {
    //     "txid": "45f7c92b-f45f-4862-8545-e0f58e78075a"
    //   }
    // }

    var txid: String? = json.StringOf("response.txid")
    resp = nil

    // Use your own hostname here:
    let sbUrl = CkoStringBuilder()
    sbUrl.Append("https://api-a03782e1.duosecurity.com/auth/v2/auth_status?txid=")
    sbUrl.Append(txid)

    print("Auth status URL: \(sbUrl.GetAsString())")

    let sbResult = CkoStringBuilder()
    var responseStatus: String?
    var responseStatus_msg: String?

    // Wait for a response...
    var i: Int = 0
    var maxWaitIterations: Int = 100
    while i < maxWaitIterations {
        // Wait 3 seconds.
        http.SleepMs(3000)

        print("Polling...")

        resp = http.QuickRequest("GET", url: sbUrl.GetAsString())
        if http.LastMethodSuccess == false {
            print("\(http.LastErrorText)")
            return
        }

        if resp!.StatusCode.intValue != 200 {
            print("error status code = \(resp!.StatusCode.intValue)")
            print("\(resp!.BodyStr)")
            print("Failed.")
            resp = nil
            return
        }

        // Sample response:

        // 	{
        // 	  "stat": "OK",
        // 	  "response": {
        // 	    "result": "waiting",
        // 	    "status": "pushed",
        // 	    "status_msg": "Pushed a login request to your phone..."
        // 	  }
        // 	}

        json.Load(resp!.BodyStr)

        // The responseResult can be "allow", "deny", or "waiting"
        sbResult.Clear()
        json.StringOfSb("response.result", sb: sbResult)
        responseStatus = json.StringOf("response.status")
        responseStatus_msg = json.StringOf("response.status_msg")

        print("\(sbResult.GetAsString())")
        print("\(responseStatus!)")
        print("\(responseStatus_msg!)")
        print("")

        resp = nil

        if sbResult.ContentsEqual("waiting", caseSensitive: true) == true {
            i = i + 1
        }
        else {
            // Force loop exit..
            i = maxWaitIterations
        }

    }

    print("Finished.")

}