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#![cfg(feature="online-tokio")]
extern crate futures;
extern crate tokio;
extern crate yubico;
use yubico::verify_async;
use futures::TryFutureExt;
use std::io::stdin;
use yubico::config::Config;
#[tokio::main]
async fn main() -> Result<(), ()> {
println!("Please plug in a yubikey and enter an OTP");
let client_id = std::env::var("YK_CLIENT_ID")
.expect("Please set a value to the YK_CLIENT_ID environment variable.");
let api_key = std::env::var("YK_API_KEY")
.expect("Please set a value to the YK_API_KEY environment variable.");
let otp = read_user_input();
let config = Config::default().set_client_id(client_id).set_key(api_key);
verify_async(otp, config)
.map_ok(|()| println!("Valid OTP."))
.map_err(|err| println!("Invalid OTP. Cause: {:?}", err))
.await
}
fn read_user_input() -> String {
let mut buf = String::new();
stdin()
.read_line(&mut buf)
.expect("Could not read user input.");
buf
}
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