(Lianja) Rabobank GET /v3/accounts

Demonstrates a call to a Rabobank API. Specifically this makes a call to the "Accounts AIS sb" API to deliver all the consented payments accounts for a specific Rabobank customer.

(This includes source code to for signing requests for PSD2 APIs)

For more information, see https://developer-sandbox.rabobank.nl/reference/accounts-ais-sb/3-0-8

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loHttp = createobject("CkHttp")

// Implements the following CURL command:

// curl --request GET \
//   --url https://api-sandbox.rabobank.nl/openapi/sandbox/payments/account-information/ais/v3/accounts \
//   --header 'accept: application/json' \
//   --header 'authorization: Bearer REPLACE_BEARER_TOKEN' \
//   --header 'date: REPLACE_THIS_VALUE' \
//   --header 'digest: REPLACE_THIS_VALUE' \
//   --header 'psu-ip-address: OPTIONAL' \
//   --header 'signature: REPLACE_THIS_VALUE' \
//   --header 'tpp-signature-certificate: MIIDkDCCAnigA ... cwE6gUl0rMA==' \
//   --header 'x-ibm-client-id: Client ID' \
//   --header 'x-request-id: REPLACE_THIS_VALUE'

// Load the previously fetched OAuth2 access token.
loJsonToken = createobject("CkJsonObject")
llSuccess = loJsonToken.LoadFile("qa_data/tokens/rabobank.json")
if (llSuccess = .F.) then
    ? loJsonToken.LastErrorText
    release loHttp
    release loJsonToken
    return
endif

// This adds the "authorization: Bearer REPLACE_BEARER_TOKEN" header.
loHttp.AuthToken = loJsonToken.StringOf("access_token")

// This is the TTP Signature certificate: The certificate used for signing the request.
loSbTppCert = createobject("CkStringBuilder")
loSbTppCert.Append("MIIDkDCCAnigAwIBAgIEWs3AJDANBgkqhkiG9w0BAQsFADCBiTELMAkGA1UEBhMC")
loSbTppCert.Append("TkwxEDAOBgNVBAgMB1V0cmVjaHQxEDAOBgNVBAcMB1V0cmVjaHQxETAPBgNVBAoM")
loSbTppCert.Append("CFJhYm9iYW5rMRwwGgYDVQQLDBNPbmxpbmUgVHJhbnNhY3Rpb25zMSUwIwYDVQQD")
loSbTppCert.Append("DBxQU0QyIEFQSSBQSSBTZXJ2aWNlcyBTYW5kYm94MB4XDTE4MDQxMTA3NTgyOFoX")
loSbTppCert.Append("DTIzMDQxMTA3NTgyOFowgYkxCzAJBgNVBAYTAk5MMRAwDgYDVQQIDAdVdHJlY2h0")
loSbTppCert.Append("MRAwDgYDVQQHDAdVdHJlY2h0MREwDwYDVQQKDAhSYWJvYmFuazEcMBoGA1UECwwT")
loSbTppCert.Append("T25saW5lIFRyYW5zYWN0aW9uczElMCMGA1UEAwwcUFNEMiBBUEkgUEkgU2Vydmlj")
loSbTppCert.Append("ZXMgU2FuZGJveDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANoAjqGW")
loSbTppCert.Append("UgCIm2F+0sBSEwLal+T3u+uldLikpxHCB8iL1GD7FrRjcA+MVsxhvHly7vRsHK+t")
loSbTppCert.Append("QyMSaeK782RHpY33qxPLc8LmoQLb2EuiQxXj9POYkYBQ74qkrZnvKVlR3WoyQWeD")
loSbTppCert.Append("OXnSY2wbNFfkP8ET4ElwyuIIEriwYhab0OIrnnrO8X82/SPZxHwEd3aQjQ6uhiw8")
loSbTppCert.Append("paDspJbS5WjEfuwY16KVVUYlhbtAwGjvc6aK0NBm+LH9fMLpAE6gfGZNy0gzMDor")
loSbTppCert.Append("VNbkQK1IoAGD8p9ZHdB0F3FwkILEjUiQW6nK+/fKDNJ0TBbpgZUpY8bR460qzxKd")
loSbTppCert.Append("eZ1yPDqX2Cjh6fkCAwEAATANBgkqhkiG9w0BAQsFAAOCAQEAYL4iD6noMJAt63kD")
loSbTppCert.Append("ED4RB2mII/lssvHhcxuDpOm3Ims9urubFWEpvV5TgIBAxy9PBinOdjhO1kGJJnYi")
loSbTppCert.Append("7F1jv1qnZwTV1JhYbvxv3+vk0jaiu7Ew7G3ASlzruXyMhN6t6jk9MpaWGl5Uw1T+")
loSbTppCert.Append("gNRUcWQRR44g3ahQRIS/UHkaV+vcpOa8j186/1X0ULHfbcVQk4LMmJeXqNs8sBAU")
loSbTppCert.Append("dKU/c6ssvj8jfJ4SfrurcBhY5UBTOdQOXTPY85aU3iFloerx7Oi9EHewxInOrU5X")
loSbTppCert.Append("zqqTz2AQPXezexVeAQxP27lzqCmYC7CFiam6QBr06VebkmnPLfs76n8CDc1cwE6g")
loSbTppCert.Append("Ul0rMA==")
loHttp.SetRequestHeader("tpp-signature-certificate",loSbTppCert.GetAsString())

// ----------------------------------------------------------------
// We're not going to add the psu-ip-address header in this example.

// ----------------------------------------------------------------
// X-Request-ID header...
// Generate a UUID v4.
loCrypt = createobject("CkCrypt2")
lcXRequestId = loCrypt.GenerateUuid()
loHttp.SetRequestHeader("x-request-id",lcXRequestId)

// ----------------------------------------------------------------
// Date header...
loDt = createobject("CkDateTime")
loDt.SetFromCurrentSystemTime()
lcDateHdrVal = loDt.GetAsRfc822(.F.)
// The desire date/time format is the "RFC822" format.
loHttp.SetRequestHeader("Date",lcDateHdrVal)

// ----------------------------------------------------------------
// Digest header...
loCrypt.HashAlgorithm = "SHA256"
loCrypt.EncodingMode = "base64"
// A GET request has no HTTP request body.  Therefore the payload is the empty string.
lcPayload = ""
lcPayloadDigest = loCrypt.HashStringENC(lcPayload)
loSbDigestHdrVal = createobject("CkStringBuilder")
loSbDigestHdrVal.Append("SHA-256=")
loSbDigestHdrVal.Append(lcPayloadDigest)
loHttp.SetRequestHeader("digest",loSbDigestHdrVal.GetAsString())

// ----------------------------------------------------------------
// The HTTP request needs to be signed for PSD2 API's...
// Create the signing string (to use in signing the HTTP request).
// See https://developer.rabobank.nl/signing-requests-psd2-apis
// 
// For "account information" HTTP requests, we must use the following headers in the signing string.
//    date
//    digest
//    x-request-id

loSbStringToSign = createobject("CkStringBuilder")
loSbStringToSign.Append("date: ")
loSbStringToSign.AppendLine(lcDateHdrVal,.F.)
loSbStringToSign.Append("digest: ")
loSbStringToSign.AppendLine(loSbDigestHdrVal.GetAsString(),.F.)
loSbStringToSign.Append("x-request-id: ")
loSbStringToSign.Append(lcXRequestId)

// ----------------------------------------------------------------
// Sign with our private key...
loSbPrivKey = createobject("CkStringBuilder")
loSbPrivKey.Append("MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDaAI6hllIAiJth")
loSbPrivKey.Append("ftLAUhMC2pfk97vrpXS4pKcRwgfIi9Rg+xa0Y3APjFbMYbx5cu70bByvrUMjEmni")
loSbPrivKey.Append("u/NkR6WN96sTy3PC5qEC29hLokMV4/TzmJGAUO+KpK2Z7ylZUd1qMkFngzl50mNs")
loSbPrivKey.Append("GzRX5D/BE+BJcMriCBK4sGIWm9DiK556zvF/Nv0j2cR8BHd2kI0OroYsPKWg7KSW")
loSbPrivKey.Append("0uVoxH7sGNeilVVGJYW7QMBo73OmitDQZvix/XzC6QBOoHxmTctIMzA6K1TW5ECt")
loSbPrivKey.Append("SKABg/KfWR3QdBdxcJCCxI1IkFupyvv3ygzSdEwW6YGVKWPG0eOtKs8SnXmdcjw6")
loSbPrivKey.Append("l9go4en5AgMBAAECggEAB8nsTqalwGIhFw8mbXuhNUFlGuek/arYLD6pv28swwQH")
loSbPrivKey.Append("7v0ZlxFUcCHF+iBl0PsDwZTZQ4ePtgGS6ehoLkWHCzb1lEv5E1YVG5qKNE2UUwRl")
loSbPrivKey.Append("fIyPakO6AzyV/UF3uzq7C+/GuXGNTKZxKewg5yD/DCFvKoCOpxu9u36FyqP/hw0S")
loSbPrivKey.Append("ADVlmp35/zoPDPZzu1j4FiCo0pJ9LwJcHxeJHopNAKDw9k6I4z/grskdgupsGzK2")
loSbPrivKey.Append("BiGiQ/+wmmO68/6Xa6KWfpr1PQ6ODJHgzZsdGCVi6Ebaqlj6BbsYWxP6h3lrsGt+")
loSbPrivKey.Append("LmHBaN2jCD6cDp+lihqFgnm8hfdv0lmbPilp71EDfwKBgQD6U8PBzZtN8yXm5WuS")
loSbPrivKey.Append("NL+/8q5GjNmeTJBSo1gM6Y8vOT4QAE147LbVuVBDwyHPoSrNejePae6Q14PswjBy")
loSbPrivKey.Append("T7B8DZ0OeQyGa3trrFg/ib7Vv4ZMvJqX9+WzBrzZsxTg7oCKHzmCR4vIRItKHH3z")
loSbPrivKey.Append("Wnnhqlo8ic2AZ2O43cdJosbO1wKBgQDe8UODOLu0vnHohOKeUqF3w/ZOB2+83/js")
loSbPrivKey.Append("YyUbSkzsGvHIwTjObuMUFTQvdMZ6IkIyJdfnDZIbvlBSD8tzL5iKFTNCK2nL1i4G")
loSbPrivKey.Append("iFr0CYLaHAlhJ5GEbTrTMDoJeBPerZq83HPrSa/Wb0xO18QTWsoVQPFfPFbbcQyI")
loSbPrivKey.Append("9ryJ2iIDrwKBgQC6kuAefG46ZPVk6K2KZUJdgDUgZC52a75NuW0RAqszmUiGiJM1")
loSbPrivKey.Append("g8ip9tq6BqAWrprGV0c93shusBKlzf5p1LdHXqYmeVY6gbWVhPipMrNHgN5KJ3BZ")
loSbPrivKey.Append("v+w1yNnMsErpcxne2HL2hPjMJTpj3GSLkm2xIlTrNhIyl9ydlr7IRUhENQKBgQCv")
loSbPrivKey.Append("i6HxbXa/90WSJTCcIcxqla8X+dsOCf3jhJ3vQy4Wq5C+1wZ35fCAG8Ifq/+so9Uj")
loSbPrivKey.Append("z5CVqqXlmpF8TFuSs2OVNuRJsg14J4nOMwgLKIIUZAcurQ10DN5I9Kx+UEK1EFXL")
loSbPrivKey.Append("aHsORdNjMfgQDO2jn9WHrr9gkg6CdB2+qyoCEfS+mQKBgBW08lcy9V5RzRWb/v/j")
loSbPrivKey.Append("xsc7ovmgAhCJhDeV7dPbx4HbFeoQJlbA8g1thdcFlcatSGyNDbvNE1GPSd4NhkpR")
loSbPrivKey.Append("Y6Hfv53kdEzjVkEtU8lUdL7HNVJqX7bU7oZlfbYcwxWQ1Gg8C1oLIAyEt71slQtd")
loSbPrivKey.Append("RiNYBRZTQe2F0wxbXnuUqLAw")

loPrivKey = createobject("CkPrivateKey")
llSuccess = loPrivKey.LoadPem(loSbPrivKey.GetAsString())
if (llSuccess = .F.) then
    ? loPrivKey.LastErrorText
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    return
endif

loRsa = createobject("CkRsa")
llSuccess = loRsa.ImportPrivateKeyObj(loPrivKey)
if (llSuccess = .F.) then
    ? loRsa.LastErrorText
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    return
endif

loRsa.EncodingMode = "base64"
lcB64Signature = loRsa.SignStringENC(loSbStringToSign.GetAsString(),"SHA256")

// ----------------------------------------------------------------
// Add the "signature" header.
// 
// The signature header will look like this:
// signature: keyId="1523433508",algorithm="rsa-sha512",headers="date digest x-request-id",signature="y5o7gKxmfA6AT6...blE1A9Q=="
// 
// The keyId is the serial number of the certificate as defined in 'TPP-Signing-Certificate' header, the format should be Integer not hex. 
loCert = createobject("CkCert")
llSuccess = loCert.SetFromEncoded(loSbTppCert.GetAsString())
if (llSuccess = .F.) then
    ? loCert.LastErrorText
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    return
endif

loSbSigHdrVal = createobject("CkStringBuilder")
loSbSigHdrVal.Append('keyId="')
loSbSigHdrVal.Append(loCert.SerialDecimal)
loSbSigHdrVal.Append('",')
loSbSigHdrVal.Append('algorithm="rsa-sha256",')
loSbSigHdrVal.Append('headers="date digest x-request-id",')
loSbSigHdrVal.Append('signature="')
loSbSigHdrVal.Append(lcB64Signature)
loSbSigHdrVal.Append('"')

loHttp.SetRequestHeader("signature",loSbSigHdrVal.GetAsString())

// ----------------------------------------------------------------
// Add remaining headers...

loHttp.SetRequestHeader("x-ibm-client-id","YOUR_APP_CLIENT_ID")
loHttp.SetRequestHeader("accept","application/json")

// ----------------------------------------------------------------
// Add our certificate and key for mutual TLS 
// (provide a registered X509 client certificate during TLS handhake)

loTlsCert = createobject("CkCert")
llSuccess = loTlsCert.LoadFromFile("qa_data/certs_and_keys/ING/example_client_tls.cer")
if (llSuccess = .F.) then
    ? loTlsCert.LastErrorText
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    release loSbSigHdrVal
    release loTlsCert
    return
endif

loBdPrivKey = createobject("CkBinData")
llSuccess = loBdPrivKey.LoadFile("qa_data/certs_and_keys/ING/example_client_tls.key")
if (llSuccess = .F.) then
    ? "Failed to load example_client_tls.key"
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    release loSbSigHdrVal
    release loTlsCert
    release loBdPrivKey
    return
endif

// The OAuth 2.0 client_id for these certificates is e77d776b-90af-4684-bebc-521e5b2614dd. 
// Please note down this client_id since you will need it in the next steps to call the API.

loTlsPrivKey = createobject("CkPrivateKey")
llSuccess = loTlsPrivKey.LoadAnyFormat(loBdPrivKey,"")
if (llSuccess = .F.) then
    ? loTlsPrivKey.LastErrorText
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    release loSbSigHdrVal
    release loTlsCert
    release loBdPrivKey
    release loTlsPrivKey
    return
endif

// Associate the private key with the certificate.
llSuccess = loTlsCert.SetPrivateKey(loTlsPrivKey)
if (llSuccess = .F.) then
    ? loTlsCert.LastErrorText
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    release loSbSigHdrVal
    release loTlsCert
    release loBdPrivKey
    release loTlsPrivKey
    return
endif

llSuccess = loHttp.SetSslClientCert(loTlsCert)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    release loSbSigHdrVal
    release loTlsCert
    release loBdPrivKey
    release loTlsPrivKey
    return
endif

// ----------------------------------------------------------------
// Finally, send the request...

loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loHttp.QuickGetSb("https://api-sandbox.rabobank.nl/openapi/sandbox/payments/account-information/ais/v3/accounts",loSbResponseBody)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    ? loSbResponseBody.GetAsString()
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    release loSbSigHdrVal
    release loTlsCert
    release loBdPrivKey
    release loTlsPrivKey
    release loSbResponseBody
    return
endif

loJResp = createobject("CkJsonObject")
loJResp.LoadSb(loSbResponseBody)
loJResp.EmitCompact = .F.

? "Response Body:"
? loJResp.Emit()

lnRespStatusCode = loHttp.LastStatus
? "Response Status Code = " + str(lnRespStatusCode)
if (lnRespStatusCode >= 400) then
    ? "Response Header:"
    ? loHttp.LastHeader
    ? "Failed."
    release loHttp
    release loJsonToken
    release loSbTppCert
    release loCrypt
    release loDt
    release loSbDigestHdrVal
    release loSbStringToSign
    release loSbPrivKey
    release loPrivKey
    release loRsa
    release loCert
    release loSbSigHdrVal
    release loTlsCert
    release loBdPrivKey
    release loTlsPrivKey
    release loSbResponseBody
    release loJResp
    return
endif

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "accounts": [
//     {
//       "_links": {
//         "account": "/v3/accounts/dW9od2VIVUhGVypIZHVpaGRhdWR3OGRoY",
//         "balances": "/v3/accounts/dW9od2VIVUhGVypIZHVpaGRhdWR3OGRoY/balances",
//         "transactions": "/v3/accounts/dW9od2VIVUhGVypIZHVpaGRhdWR3OGRoY/transactions"
//       },
//       "currency": "EUR",
//       "iban": "NL05RABO0812836782",
//       "name": "Rosie Roy",
//       "resourceId": "dW9od2VIVUhGVypIZHVpaGRhdWR3OGRoY",
//       "status": "enabled"
//     }
//   ]
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

i = 0
lnCount_i = loJResp.SizeOfArray("accounts")
do while i < lnCount_i
    loJResp.I = i
    lcV_linksAccount = loJResp.StringOf("accounts[i]._links.account")
    lcV_linksBalances = loJResp.StringOf("accounts[i]._links.balances")
    lcV_linksTransactions = loJResp.StringOf("accounts[i]._links.transactions")
    lcCurrency = loJResp.StringOf("accounts[i].currency")
    lcIban = loJResp.StringOf("accounts[i].iban")
    lcName = loJResp.StringOf("accounts[i].name")
    lcResourceId = loJResp.StringOf("accounts[i].resourceId")
    lcStatus = loJResp.StringOf("accounts[i].status")
    i = i + 1
enddo


release loHttp
release loJsonToken
release loSbTppCert
release loCrypt
release loDt
release loSbDigestHdrVal
release loSbStringToSign
release loSbPrivKey
release loPrivKey
release loRsa
release loCert
release loSbSigHdrVal
release loTlsCert
release loBdPrivKey
release loTlsPrivKey
release loSbResponseBody
release loJResp