Unicode C++

ABN AMRO OAuth2 Client Credentials Authentication

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

#include <CkCertW.h>
#include <CkBinDataW.h>
#include <CkPrivateKeyW.h>
#include <CkHttpW.h>
#include <CkHttpRequestW.h>
#include <CkHttpResponseW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    bool 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'

    CkCertW cert;
    success = cert.LoadFromFile(L"qa_data/certs/TPPCertificate.cer");
    if (success == false) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    CkBinDataW bdKey;
    success = bdKey.LoadFile(L"qa_data/certs/TPPprivateKey.key");

    CkPrivateKeyW privKey;
    success = privKey.LoadAnyFormat(bdKey,L"passwordIfNeeded");
    if (success == false) {
        wprintf(L"%s\n",privKey.lastErrorText());
        return;
    }

    success = cert.SetPrivateKey(privKey);
    if (success == false) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    CkHttpW http;

    success = http.SetSslClientCert(cert);
    if (success == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkHttpRequestW req;
    req.AddParam(L"grant_type",L"client_credentials");
    req.AddParam(L"client_id",L"TPP_test");
    req.AddParam(L"scope",L"psd2:payment:sepa:write psd2:payment:sepa:read");

    req.put_HttpVerb(L"POST");
    req.put_ContentType(L"application/x-www-form-urlencoded");

    CkHttpResponseW resp;
    success = http.HttpReq(L"https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2",req,resp);
    if (success == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    if (resp.get_StatusCode() != 200) {
        wprintf(L"%s\n",resp.bodyStr());
        return;
    }

    // Get the JSON result:
    // {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
    CkJsonObjectW json;
    json.Load(resp.bodyStr());
    wprintf(L"access_token: %s\n",json.stringOf(L"access_token"));
    wprintf(L"token_type: %s\n",json.stringOf(L"token_type"));
    wprintf(L"expires_in: %s\n",json.stringOf(L"expires_in"));
    }