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bitwarden_rs/src/ratelimit.rs

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use once_cell::sync::Lazy;
use std::{net::IpAddr, num::NonZeroU32, time::Duration};
use governor::{clock::DefaultClock, state::keyed::DashMapStateStore, Quota, RateLimiter};
use crate::{Error, CONFIG};
type Limiter<T = IpAddr> = RateLimiter<T, DashMapStateStore<T>, DefaultClock>;
static LIMITER_LOGIN: Lazy<Limiter> = Lazy::new(|| {
let seconds = Duration::from_secs(CONFIG.login_ratelimit_seconds());
let burst = NonZeroU32::new(CONFIG.login_ratelimit_max_burst()).expect("Non-zero login ratelimit burst");
RateLimiter::keyed(Quota::with_period(seconds).expect("Non-zero login ratelimit seconds").allow_burst(burst))
});
static LIMITER_ADMIN: Lazy<Limiter> = Lazy::new(|| {
let seconds = Duration::from_secs(CONFIG.admin_ratelimit_seconds());
let burst = NonZeroU32::new(CONFIG.admin_ratelimit_max_burst()).expect("Non-zero admin ratelimit burst");
RateLimiter::keyed(Quota::with_period(seconds).expect("Non-zero admin ratelimit seconds").allow_burst(burst))
});
pub fn check_limit_login(ip: &IpAddr) -> Result<(), Error> {
match LIMITER_LOGIN.check_key(ip) {
Ok(_) => Ok(()),
Err(_e) => {
err_code!("Too many login requests", 429);
}
}
}
pub fn check_limit_admin(ip: &IpAddr) -> Result<(), Error> {
match LIMITER_ADMIN.check_key(ip) {
Ok(_) => Ok(()),
Err(_e) => {
err_code!("Too many admin requests", 429);
}
}
}