Rust

PayPal -- Get an OAuth 2.0 Access Token

See more PayPal Examples

Demonstrates how to send a request to get a PayPal OAuth2 access token. Sends an HTTP request equivalent to the following:

curl https://api.sandbox.paypal.com/v1/oauth2/token \
  -H "Accept: application/json" \
  -H "Accept-Language: en_US" \
  -u "Client-Id:Secret" \
  -d "grant_type=client_credentials"

Rust

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

let rest = chilkat::Rest::new();

// Make the initial connection.
// A single REST object, once connected, can be used for many PayPal REST API calls.
// The auto-reconnect indicates that if the already-established HTTPS connection is closed,
// then it will be automatically re-established as needed.
let b_auto_reconnect = true;
if rest.connect("api.sandbox.paypal.com", 443, true, b_auto_reconnect).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// Duplicate this request:

// 	curl https://api.sandbox.paypal.com/v1/oauth2/token \
// 	  -H "Accept: application/json" \
// 	  -H "Accept-Language: en_US" \
// 	  -u "Client-Id:Secret" \
// 	  -d "grant_type=client_credentials"

let _ = rest.add_header("Accept", "application/json");
let _ = rest.add_header("Accept-Language", "en_US");

// For additional help on where to find  your client ID and API secret, see PayPal Client_ID and API_Secret
let _ = rest.set_auth_basic("PAYPAL_REST_API_CLIENT_ID", "PAYPAL_REST_API_SECRET");

let _ = rest.add_query_param("grant_type", "client_credentials");

let Ok(response_str) = rest.full_request_form_url_encoded("POST", "/v1/oauth2/token") else {
    println!("{}", rest.last_error_text());
    return;
};

println!("{}", rest.last_request_header());

// A sample response:

// 	{
// 	  "scope": "https://api.paypal.com/v1/payments/.* https://api.paypal.com/v1/vault/credit-card https://api.paypal.com/v1/vault/credit-card/.*",
// 	  "access_token": "EEwJ6tF9x5WCIZDYzyZGaz6Khbw7raYRIBV_WxVvgmsG",
// 	  "token_type": "Bearer",
// 	  "app_id": "APP-6XR95014BA15863X",
// 	  "expires_in": 28800
// 	}

let json = chilkat::JsonObject::new();
let _ = json.load(&response_str);
json.set_emit_compact(false);

// Check the response status code.  A 200 indicates success..
if rest.response_status_code() != 200 {
    println!("{}", json.emit().unwrap_or_default());
    println!("Failed.");
    return;
}

// Given that the access token expires in approx 8 hours,
// let's record the date/time this token was created.
// This will allow us to know beforehand if the token
// is expired (and we can then fetch a new token).
let date_time = chilkat::DateTime::new();
let b_local_time = false;
let dt_now = date_time.get_as_unix_time(b_local_time) as i32;
let _ = json.append_int("tokenCreateTimeUtc", dt_now);

// Examine the access token and save to a file.
println!("Access Token: {}", json.string_of("access_token").unwrap_or_default());
println!("Full JSON Response:");
println!("{}", json.emit().unwrap_or_default());

let sb_response = chilkat::StringBuilder::new();
let _ = sb_response.append(&json.emit().unwrap_or_default());
let b_emit_bom = false;
let _ = sb_response.write_file("qa_data/tokens/paypal.json", "utf-8", b_emit_bom);