(Classic ASP) 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

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

integrationKey = "DIMS3V5QDVG9J9ABRXC4"
secretKey = "HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab"

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Http")
set http = Server.CreateObject("Chilkat.Http")

http.Accept = "application/json"

' Use your own hostname here:
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

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.HttpRequest")
set req = Server.CreateObject("Chilkat.HttpRequest")
req.AddParam "username","matt"

' resp is a Chilkat.HttpResponse
Set resp = http.PostUrlEncoded(url,req)
If (http.LastMethodSuccess = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "status code = " & resp.StatusCode) & "</pre>"

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.JsonObject")
set json = Server.CreateObject("Chilkat.JsonObject")
success = json.Load(resp.BodyStr)
json.EmitCompact = 0
Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"

' 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

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

%>
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