(SQL Server) 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

// Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
//
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    -- This example assumes the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @integrationKey nvarchar(4000)
    SELECT @integrationKey = 'DIMS3V5QDVG9J9ABRXC4'
    DECLARE @secretKey nvarchar(4000)
    SELECT @secretKey = 'HWVQ46nubLBxhnRlKddTltWIi3hL0fIQF2qTvLab'

    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @http, 'Accept', 'application/json'

    -- Use your own hostname here:
    DECLARE @url nvarchar(4000)
    SELECT @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.
    EXEC sp_OASetProperty @http, 'Login', @integrationKey
    EXEC sp_OASetProperty @http, 'Password', @secretKey

    DECLARE @req int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.HttpRequest', @req OUT

    EXEC sp_OAMethod @req, 'AddParam', NULL, 'username', 'matt'

    DECLARE @resp int
    EXEC sp_OAMethod @http, 'PostUrlEncoded', @resp OUT, @url, @req
    EXEC sp_OAGetProperty @http, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @req
        RETURN
      END


    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    PRINT 'status code = ' + @iTmp0

    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.JsonObject', @json OUT

    DECLARE @success int
    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    EXEC sp_OAMethod @json, 'Load', @success OUT, @sTmp0
    EXEC sp_OASetProperty @json, 'EmitCompact', 0
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @resp

    -- 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

    DECLARE @device nvarchar(4000)

    DECLARE @display_name nvarchar(4000)

    DECLARE @name nvarchar(4000)

    DECLARE @number nvarchar(4000)

    DECLARE @v_type nvarchar(4000)

    DECLARE @j int

    DECLARE @count_j int

    DECLARE @strVal nvarchar(4000)

    DECLARE @responseResult nvarchar(4000)
    EXEC sp_OAMethod @json, 'StringOf', @responseResult OUT, 'response.result'
    DECLARE @responseStatus_msg nvarchar(4000)
    EXEC sp_OAMethod @json, 'StringOf', @responseStatus_msg OUT, 'response.status_msg'
    DECLARE @stat nvarchar(4000)
    EXEC sp_OAMethod @json, 'StringOf', @stat OUT, 'stat'
    DECLARE @i int
    SELECT @i = 0
    DECLARE @count_i int
    EXEC sp_OAMethod @json, 'SizeOfArray', @count_i OUT, 'response.devices'
    WHILE @i < @count_i
      BEGIN
        EXEC sp_OASetProperty @json, 'I', @i
        EXEC sp_OAMethod @json, 'StringOf', @device OUT, 'response.devices[i].device'
        EXEC sp_OAMethod @json, 'StringOf', @display_name OUT, 'response.devices[i].display_name'
        EXEC sp_OAMethod @json, 'StringOf', @name OUT, 'response.devices[i].name'
        EXEC sp_OAMethod @json, 'StringOf', @number OUT, 'response.devices[i].number'
        EXEC sp_OAMethod @json, 'StringOf', @v_type OUT, 'response.devices[i].type'
        SELECT @j = 0
        EXEC sp_OAMethod @json, 'SizeOfArray', @count_j OUT, 'response.devices[i].capabilities'
        WHILE @j < @count_j
          BEGIN
            EXEC sp_OASetProperty @json, 'J', @j
            EXEC sp_OAMethod @json, 'StringOf', @strVal OUT, 'response.devices[i].capabilities[j]'
            SELECT @j = @j + 1
          END
        SELECT @i = @i + 1
      END

    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @req
    EXEC @hr = sp_OADestroy @json


END
GO