(Node.js) 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

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var success = false;

    // 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'

    var cert = new chilkat.Cert();
    success = cert.LoadFromFile("qa_data/certs/TPPCertificate.cer");
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    var bdKey = new chilkat.BinData();
    success = bdKey.LoadFile("qa_data/certs/TPPprivateKey.key");

    var privKey = new chilkat.PrivateKey();
    success = privKey.LoadAnyFormat(bdKey,"passwordIfNeeded");
    if (success == false) {
        console.log(privKey.LastErrorText);
        return;
    }

    success = cert.SetPrivateKey(privKey);
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    var http = new chilkat.Http();

    success = http.SetSslClientCert(cert);
    if (success == false) {
        console.log(http.LastErrorText);
        return;
    }

    var req = new chilkat.HttpRequest();
    req.AddParam("grant_type","client_credentials");
    req.AddParam("client_id","TPP_test");
    req.AddParam("scope","psd2:payment:sepa:write psd2:payment:sepa:read");

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

    var resp = new chilkat.HttpResponse();
    success = http.HttpReq("https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2",req,resp);
    if (success == false) {
        console.log(http.LastErrorText);
        return;
    }

    if (resp.StatusCode !== 200) {
        console.log(resp.BodyStr);
        return;
    }

    // Get the JSON result:
    // {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
    var json = new chilkat.JsonObject();
    json.Load(resp.BodyStr);
    console.log("access_token: " + json.StringOf("access_token"));
    console.log("token_type: " + json.StringOf("token_type"));
    console.log("expires_in: " + json.StringOf("expires_in"));

}

chilkatExample();