Rust Requires Chilkat v10.1.2+

Rabobank OAuth2 Access Token

See more OAuth2 Examples

Demonstrates how to get an OAuth 2.0 access token to access Rabobank API's

Important: This example is for desktop apps only. (It is not for web-based applications.)

Your app defined in the Rabobank portal should look something like this. (Our test app is named "chilkat". You should name your app something else.)

Rust

// For more information about the OAuth2, see OAuth 2.0 Authorization Flow

let oauth2 = chilkat::OAuth2::new();

// This should be the port in the localhost callback URL for your app.  
// The callback URL would look like "http://localhost:3017/" if the port number is 3017.
oauth2.set_listen_port(3017);

// IMPORTANT: Don't forget to subscribe your Rabobank application to the OAuth 2.0 services in the Rabobank Online Developer Portal.
// IMPORTANT: Don't forget to subscribe your Rabobank application to the OAuth 2.0 services in the Rabobank Online Developer Portal.
// IMPORTANT: Don't forget to subscribe your Rabobank application to the OAuth 2.0 services in the Rabobank Online Developer Portal.
// IMPORTANT: Don't forget to subscribe your Rabobank application to the OAuth 2.0 services in the Rabobank Online Developer Portal.

// See also https://developer.rabobank.nl/faq

oauth2.set_authorization_endpoint("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/authorize");
oauth2.set_token_endpoint("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token");

// Replace these with actual values.
oauth2.set_client_id("YOUR_APP_CLIENT_ID");
// This is your app password:
oauth2.set_client_secret("YOUR_APP_CLIENT_SECRET");

oauth2.set_code_challenge(false);
// Provide a SPACE separated list of scopes, as defined in the Rabobank API documentation, 
// such as at https://developer-sandbox.rabobank.nl/reference/accounts-ais-sb/3-0-8

// Important: To get a refresh token in the final response, you have to ask for "offline_access" scope
oauth2.set_scope("ais.balances.read ais.transactions.read-90days ais.transactions.read-history");

// Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
let Ok(url) = oauth2.start_auth() else {
    println!("{}", oauth2.last_error_text());
    return;
};

println!("url = {}", url);

// Launch the default browser on the system and navigate to the url.
// The LaunchBrowser method was added in Chilkat v10.1.2.
if oauth2.launch_browser(&url).is_err() {
    println!("{}", oauth2.last_error_text());
    return;
}

// Wait for the user to approve or deny authorization in the browser.
let mut num_ms_waited = 0;
while (num_ms_waited < 90000) && (oauth2.auth_flow_state() < 3) {
    oauth2.sleep_ms(100);
    num_ms_waited = num_ms_waited + 100;
}

// If the browser does not respond within the specified time, AuthFlowState will be:
// 
// 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
// 2: Waiting for Final Response - The thread is awaiting the final access token response.
// In either case, cancel the background task initiated by StartAuth.

if oauth2.auth_flow_state() < 3 {
    let _ = oauth2.cancel();
    println!("No response from the browser!");
    return;
}

// Check AuthFlowState to determine if authorization was granted, denied, or failed:
// 
// 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
// 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
// 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

if oauth2.auth_flow_state() == 5 {
    println!("OAuth2 failed to complete.");
    println!("{}", oauth2.failure_info());
    return;
}

if oauth2.auth_flow_state() == 4 {
    println!("OAuth2 authorization was denied.");
    println!("{}", oauth2.access_token_response());
    return;
}

if oauth2.auth_flow_state() != 3 {
    println!("Unexpected AuthFlowState:{}", oauth2.auth_flow_state());
    return;
}

println!("OAuth2 authorization granted!");
println!("Access Token = {}", oauth2.access_token());

// Get the full JSON response:
let json = chilkat::JsonObject::new();
let _ = json.load(&oauth2.access_token_response());
json.set_emit_compact(false);

// The JSON response looks like this:

// {
//   "token_type": "Bearer",
//   "access_token": "AAIkYTU0ZWM ... sxE0KL0HHWw",
//   "expires_in": 3600,
//   "consented_on": 1584641121,
//   "scope": "ais.balances.read ais.transactions.read-90days ais.transactions.read-history",
//   "refresh_token": "AAJXXSdN ... Uiblz9ILkxNBlytRGA",
//   "refresh_token_expires_in": 157784760,
//   "expires_on": "1584644722"
// }

println!("{}", json.emit().unwrap_or_default());

// Save the JSON to a file to be used in future requests.
let fac = chilkat::FileAccess::new();
let _ = fac.write_entire_text_file("qa_data/tokens/rabobank.json", &json.emit().unwrap_or_default(), "utf-8", false);