(Lianja) 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 Lianja Extension Download Chilkat Lianja Extension

llSuccess = .F.

// 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'

loCert = createobject("CkCert")
llSuccess = loCert.LoadFromFile("qa_data/certs/TPPCertificate.cer")
if (llSuccess = .F.) then
    ? loCert.LastErrorText
    release loCert
    return
endif

loBdKey = createobject("CkBinData")
llSuccess = loBdKey.LoadFile("qa_data/certs/TPPprivateKey.key")

loPrivKey = createobject("CkPrivateKey")
llSuccess = loPrivKey.LoadAnyFormat(loBdKey,"passwordIfNeeded")
if (llSuccess = .F.) then
    ? loPrivKey.LastErrorText
    release loCert
    release loBdKey
    release loPrivKey
    return
endif

llSuccess = loCert.SetPrivateKey(loPrivKey)
if (llSuccess = .F.) then
    ? loCert.LastErrorText
    release loCert
    release loBdKey
    release loPrivKey
    return
endif

loHttp = createobject("CkHttp")

llSuccess = loHttp.SetSslClientCert(loCert)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loCert
    release loBdKey
    release loPrivKey
    release loHttp
    return
endif

loReq = createobject("CkHttpRequest")
loReq.AddParam("grant_type","client_credentials")
loReq.AddParam("client_id","TPP_test")
loReq.AddParam("scope","psd2:payment:sepa:write psd2:payment:sepa:read")

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

loResp = createobject("CkHttpResponse")
llSuccess = loHttp.HttpReq("https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2",loReq,loResp)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loCert
    release loBdKey
    release loPrivKey
    release loHttp
    release loReq
    release loResp
    return
endif

if (loResp.StatusCode <> 200) then
    ? loResp.BodyStr
    release loCert
    release loBdKey
    release loPrivKey
    release loHttp
    release loReq
    release loResp
    return
endif

// Get the JSON result:
// {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
loJson = createobject("CkJsonObject")
loJson.Load(loResp.BodyStr)
? "access_token: " + loJson.StringOf("access_token")
? "token_type: " + loJson.StringOf("token_type")
? "expires_in: " + loJson.StringOf("expires_in")


release loCert
release loBdKey
release loPrivKey
release loHttp
release loReq
release loResp
release loJson