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[READ-ONLY] Mirror of https://github.com/chrisvander/crate. The future of cloud storage.
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980use sha2::{Digest, Sha256};use std::{ collections::HashMap, sync::{Arc, Mutex}, time::{Duration, Instant},};
// Atrium hides the typed token endpoint error. Observe only the OAuth wire error,// never infer revocation from network failures or unstructured error messages.#[derive(Clone, Default)]pub struct Revocations(Arc<Mutex<HashMap<[u8; 32], Instant>>>);
impl Revocations { pub fn observe(&self, request: &[u8], status: http::StatusCode, response: &[u8]) { if status != http::StatusCode::BAD_REQUEST && status != http::StatusCode::UNAUTHORIZED { return; } let Ok(error) = serde_json::from_slice::<serde_json::Value>(response) else { return; }; if error["error"] != "invalid_grant" { return; } let parameters: std::collections::HashMap<_, _> = url::form_urlencoded::parse(request).collect(); if parameters.get("grant_type").map(|v| v.as_ref()) != Some("refresh_token") { return; } if let Some(token) = parameters.get("refresh_token") { let mut revoked = self.0.lock().expect("revocations"); revoked.retain(|_, created| created.elapsed() < Duration::from_secs(600)); if revoked.len() >= 1024 && let Some(oldest) = revoked .iter() .min_by_key(|(_, at)| *at) .map(|(key, _)| *key) { revoked.remove(&oldest); } revoked.insert(Sha256::digest(token.as_bytes()).into(), Instant::now()); } }
pub fn take(&self, token: &str) -> bool { self.0 .lock() .expect("revocations") .remove(&<[u8; 32]>::from(Sha256::digest(token.as_bytes()))) .is_some_and(|created| created.elapsed() < Duration::from_secs(600)) }}
#[cfg(test)]mod tests { use super::*; #[test] fn only_terminal_refresh_errors_revoke() { let errors = Revocations::default(); let request = b"grant_type=refresh_token&refresh_token=secret"; errors.observe( request, http::StatusCode::SERVICE_UNAVAILABLE, br#"{"error":"invalid_grant"}"#, ); errors.observe( request, http::StatusCode::BAD_REQUEST, br#"{"error":"use_dpop_nonce"}"#, ); assert!(!errors.take("secret")); errors.observe( request, http::StatusCode::BAD_REQUEST, br#"{"error":"invalid_grant"}"#, ); assert!(errors.take("secret")); assert!(!errors.take("secret")); }}