(SQL Server) ABN AMRO OAuth2 Client Credentials Authentication

Demonstrates how to obtain an access token for an ABN AMRO online API using OAuth2 with the Client Credentials flow.

Note: This example requires Chilkat v11.0.0 or greater.

For more information, see https://developer.abnamro.com/api/payment-initiation-v1/payment-initiation-tutorial

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
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

    -- This example sends the following CURL request:

    -- 	curl -X POST -k https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2 \
    -- 	-v \
    -- 	--cert TPPCertificate.crt \
    -- 	--key TPPprivateKey.key \
    -- 	-H 'Cache-Control: no-cache' \
    -- 	-H 'Content-Type: application/x-www-form-urlencoded' \
    -- 	-d 'grant_type=client_credentials&client_id=TPP_test&scope=psd2:payment:sepa:write psd2:payment:sepa:read'

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

    EXEC sp_OAMethod @cert, 'LoadFromFile', @success OUT, 'qa_data/certs/TPPCertificate.cer'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @cert
        RETURN
      END

    DECLARE @bdKey int
    EXEC @hr = sp_OACreate 'Chilkat.BinData', @bdKey OUT

    EXEC sp_OAMethod @bdKey, 'LoadFile', @success OUT, 'qa_data/certs/TPPprivateKey.key'

    DECLARE @privKey int
    EXEC @hr = sp_OACreate 'Chilkat.PrivateKey', @privKey OUT

    EXEC sp_OAMethod @privKey, 'LoadAnyFormat', @success OUT, @bdKey, 'passwordIfNeeded'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @privKey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @bdKey
        EXEC @hr = sp_OADestroy @privKey
        RETURN
      END

    EXEC sp_OAMethod @cert, 'SetPrivateKey', @success OUT, @privKey
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @cert, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @bdKey
        EXEC @hr = sp_OADestroy @privKey
        RETURN
      END

    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT

    EXEC sp_OAMethod @http, 'SetSslClientCert', @success OUT, @cert
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @bdKey
        EXEC @hr = sp_OADestroy @privKey
        EXEC @hr = sp_OADestroy @http
        RETURN
      END

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

    EXEC sp_OAMethod @req, 'AddParam', NULL, 'grant_type', 'client_credentials'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'client_id', 'TPP_test'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'scope', 'psd2:payment:sepa:write psd2:payment:sepa:read'

    EXEC sp_OASetProperty @req, 'HttpVerb', 'POST'
    EXEC sp_OASetProperty @req, 'ContentType', 'application/x-www-form-urlencoded'

    DECLARE @resp int
    EXEC @hr = sp_OACreate 'Chilkat.HttpResponse', @resp OUT

    EXEC sp_OAMethod @http, 'HttpReq', @success OUT, 'https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2', @req, @resp
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @bdKey
        EXEC @hr = sp_OADestroy @privKey
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END

    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN
        EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @cert
        EXEC @hr = sp_OADestroy @bdKey
        EXEC @hr = sp_OADestroy @privKey
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END

    -- Get the JSON result:
    -- {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    EXEC sp_OAMethod @json, 'Load', @success OUT, @sTmp0

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'access_token'
    PRINT 'access_token: ' + @sTmp0

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'token_type'
    PRINT 'token_type: ' + @sTmp0

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'expires_in'
    PRINT 'expires_in: ' + @sTmp0

    EXEC @hr = sp_OADestroy @cert
    EXEC @hr = sp_OADestroy @bdKey
    EXEC @hr = sp_OADestroy @privKey
    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @req
    EXEC @hr = sp_OADestroy @resp
    EXEC @hr = sp_OADestroy @json


END
GO