(Ruby) 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.

For more information, see https://developer.abnamro.com/api/payment-initiation-v1/payment-initiation-tutorial

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# 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'

cert = Chilkat::CkCert.new()
success = cert.LoadFromFile("qa_data/certs/TPPCertificate.cer")
if (success != true)
    print cert.lastErrorText() + "\n";
    exit
end

bdKey = Chilkat::CkBinData.new()
success = bdKey.LoadFile("qa_data/certs/TPPprivateKey.key")

privKey = Chilkat::CkPrivateKey.new()
success = privKey.LoadAnyFormat(bdKey,"passwordIfNeeded")
if (success != true)
    print privKey.lastErrorText() + "\n";
    exit
end

success = cert.SetPrivateKey(privKey)
if (success != true)
    print cert.lastErrorText() + "\n";
    exit
end

http = Chilkat::CkHttp.new()

success = http.SetSslClientCert(cert)
if (success != true)
    print http.lastErrorText() + "\n";
    exit
end

req = Chilkat::CkHttpRequest.new()
req.AddParam("grant_type","client_credentials")
req.AddParam("client_id","TPP_test")
req.AddParam("scope","psd2:payment:sepa:write psd2:payment:sepa:read")

# resp is a CkHttpResponse
resp = http.PostUrlEncoded("https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2",req)
if (http.get_LastMethodSuccess() == false)
    print http.lastErrorText() + "\n";
    exit
end

if (resp.get_StatusCode() != 200)
    print resp.bodyStr() + "\n";

    exit
end

# Get the JSON result:
# {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
json = Chilkat::CkJsonObject.new()
json.Load(resp.bodyStr())
print "access_token: " + json.stringOf("access_token") + "\n";
print "token_type: " + json.stringOf("token_type") + "\n";
print "expires_in: " + json.stringOf("expires_in") + "\n";