Visual Basic 6.0 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. Visual Basic 6.0

Dim success As Long
success = 0

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

Dim integrationKey As String
integrationKey = "DIMS3V5QDVG9J9ABRXC4"
Dim secretKey As String
secretKey = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab"

Dim http As New ChilkatHttp

http.Accept = "application/json"

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

http.Login = integrationKey
http.Password = secretKey

Dim req As New ChilkatHttpRequest
req.AddParam "username","matt"

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

Dim resp As New ChilkatHttpResponse
success = http.HttpReq(url,req,resp)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Debug.Print "status code = " & resp.StatusCode

Dim json As New ChilkatJsonObject
success = json.Load(resp.BodyStr)
json.EmitCompact = 0
Debug.Print 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

Dim device As String
Dim display_name As String
Dim name As String
Dim number As String
Dim v_type As String
Dim j As Long
Dim count_j As Long
Dim strVal As String

Dim responseResult As String
responseResult = json.StringOf("response.result")
Dim responseStatus_msg As String
responseStatus_msg = json.StringOf("response.status_msg")
Dim stat As String
stat = json.StringOf("stat")
Dim i As Long
i = 0
Dim count_i As Long
count_i = json.SizeOfArray("response.devices")
Do 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")
    Do While j < count_j
        json.J = j
        strVal = json.StringOf("response.devices[i].capabilities[j]")
        j = j + 1
    Loop
    i = i + 1
Loop