Dart

ABN AMRO OAuth2 Client Credentials Authentication

See more ABN AMRO Examples

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

import 'package:chilkat/chilkat.dart';

void main() {
  // 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'

  final cert = CkCert();
  try {
    cert.loadFromFile('qa_data/certs/TPPCertificate.cer');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final bdKey = CkBinData();
  bdKey.loadFile('qa_data/certs/TPPprivateKey.key');

  final privKey = CkPrivateKey();
  try {
    privKey.loadAnyFormat(bdKey, 'passwordIfNeeded');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  try {
    cert.setPrivateKey(privKey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final http = CkHttp();

  try {
    http.setSslClientCert(cert);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final req = CkHttpRequest();
  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';

  final resp = CkHttpResponse();
  try {
    http.httpReq('https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2', req, resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  if (resp.statusCode != 200) {
    print(resp.bodyStr);
    return;
  }

  // Get the JSON result:
  // {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
  final json = CkJsonObject();
  json.load(resp.bodyStr);
  print('access_token: ${json.stringOf('access_token')}');
  print('token_type: ${json.stringOf('token_type')}');
  print('expires_in: ${json.stringOf('expires_in')}');
}