Lianja

Rabobank Refresh OAuth2 Access Token

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Demonstrates how to refresh an expired Rabobank OAuth2 access token. (No interactive user interaction is required to refresh an access token.) Lianja

llSuccess = .F.

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

// We previously obtained an access token and saved the JSON to a file using this example:
// Get Rabobank OAuth2 Access Token

loJson = createobject("CkJsonObject")
llSuccess = loJson.LoadFile("qa_data/tokens/rabobank.json")
if (llSuccess <> .T.) then
    release loJson
    return
endif

// {
//   "token_type": "Bearer",
//   "access_token": "AAIkYTU0ZWM ... sxE0KL0HHWw",
//   "expires_in": 3600,
//   "consented_on": 1584641121,
//   "scope": "ais.balances.read ais.transactions.read-90days ais.transactions.read-history",
//   "refresh_token": "AAJXXSdN ... Uiblz9ILkxNBlytRGA",
//   "refresh_token_expires_in": 157784760,
//   "expires_on": "1584644722"
// }

// Refresh the access token by sending a POST like this:
// 

// POST /oauth2/token
// Headers:
//     Content-Type: application/x-www-form-urlencoded
//     Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)
// 
// Body (x-www-form-urlencoded):
//     grant_type: refresh_token
//     refresh_token: REFRESH_TOKEN

loReq = createobject("CkHttpRequest")
loReq.AddParam("grant_type","refresh_token")
loReq.AddParam("refresh_token",loJson.StringOf("refresh_token"))

loHttp = createobject("CkHttp")

// Causes the "Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)" header to be added..
loHttp.BasicAuth = .T.
loHttp.Login = "YOUR_APP_CLIENT_ID"
loHttp.Password = "YOUR_APP_CLIENT_SECRET"

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

loResp = createobject("CkHttpResponse")
llSuccess = loHttp.HttpReq("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token",loReq,loResp)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loJson
    release loReq
    release loHttp
    release loResp
    return
endif

// Load the JSON response.
loJson.Load(loResp.BodyStr)
loJson.EmitCompact = .F.

// Show the JSON response.
? loJson.Emit()

? "Response status code: " + str(loResp.StatusCode)

// If the response status code is not 200, then it's an error.
if (loResp.StatusCode <> 200) then
    release loJson
    release loReq
    release loHttp
    release loResp
    return
endif

// Save the refreshed access token JSON to a file for future requests.
loFac = createobject("CkFileAccess")
loFac.WriteEntireTextFile("qa_data/tokens/rabobank.json",loJson.Emit(),"utf-8",.F.)


release loJson
release loReq
release loHttp
release loResp
release loFac