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test(relay): refresh_token grant integration tests (AC4.1–AC4.5)
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+284
-1
crates/relay/src/routes/oauth_token.rs
+284
-1
crates/relay/src/routes/oauth_token.rs
···
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508
use crate::app::{app, test_state, AppState};
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use crate::auth::issue_nonce;
510
-
use crate::db::oauth::{register_oauth_client, store_authorization_code};
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+
use crate::db::oauth::{register_oauth_client, store_authorization_code, store_oauth_refresh_token};
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+
use crate::routes::token::generate_token;
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// ── DPoP proof test helpers ───────────────────────────────────────────────
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···
1116
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assert_eq!(
1117
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json["error"], "invalid_grant",
1118
1119
"redirect_uri mismatch must return invalid_grant (AC1.8)"
1120
+
);
1121
+
}
1122
+
1123
+
// ── AC4 — refresh_token grant ─────────────────────────────────────────────
1124
+
1125
+
/// Seed the DB with a client + account + fresh refresh token bound to `jkt`.
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+
///
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+
/// Returns the base64url plaintext of the seeded refresh token.
1128
+
async fn seed_refresh_token(state: &AppState, jkt: &str) -> String {
1129
+
register_oauth_client(
1130
+
&state.db,
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+
"https://app.example.com/client-metadata.json",
1132
+
r#"{"redirect_uris":["https://app.example.com/callback"]}"#,
1133
+
)
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+
.await
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+
.unwrap();
1136
+
sqlx::query(
1137
+
"INSERT INTO accounts (did, email, password_hash, created_at, updated_at) \
1138
+
VALUES ('did:plc:testaccount000000000000', 'test@example.com', NULL, \
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+
datetime('now'), datetime('now'))",
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+
)
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+
.execute(&state.db)
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+
.await
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+
.unwrap();
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+
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+
let token = generate_token();
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store_oauth_refresh_token(
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+
&state.db,
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+
&token.hash,
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+
"https://app.example.com/client-metadata.json",
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+
"did:plc:testaccount000000000000",
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+
jkt,
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+
)
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.await
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+
.unwrap();
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+
token.plaintext
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+
}
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+
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/// Seed the DB with an already-expired refresh token (bypasses store_oauth_refresh_token's +24h).
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///
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/// Returns the base64url plaintext.
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async fn seed_expired_refresh_token(state: &AppState, jkt: &str) -> String {
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register_oauth_client(
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+
&state.db,
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+
"https://app.example.com/client-metadata.json",
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+
r#"{"redirect_uris":["https://app.example.com/callback"]}"#,
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+
)
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.await
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+
.unwrap();
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sqlx::query(
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+
"INSERT INTO accounts (did, email, password_hash, created_at, updated_at) \
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VALUES ('did:plc:testaccount000000000000', 'test@example.com', NULL, \
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+
datetime('now'), datetime('now'))",
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+
)
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.execute(&state.db)
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.await
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+
.unwrap();
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+
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let token = generate_token();
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sqlx::query(
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"INSERT INTO oauth_tokens (id, client_id, did, scope, jkt, expires_at, created_at) \
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VALUES (?, ?, ?, 'com.atproto.refresh', ?, datetime('now', '-1 seconds'), datetime('now'))",
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+
)
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.bind(&token.hash)
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.bind("https://app.example.com/client-metadata.json")
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.bind("did:plc:testaccount000000000000")
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.bind(jkt)
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.execute(&state.db)
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.await
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.unwrap();
1190
+
token.plaintext
1191
+
}
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+
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#[tokio::test]
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async fn refresh_token_happy_path_returns_200_with_new_tokens() {
1195
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// AC4.1 — valid rotation returns 200 with fresh token pair.
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let state = test_state().await;
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let key = SigningKey::random(&mut OsRng);
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let jkt = dpop_thumbprint(&key);
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+
1200
+
let plaintext = seed_refresh_token(&state, &jkt).await;
1201
+
let nonce = issue_nonce(&state.dpop_nonces).await;
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+
let dpop = make_dpop_proof(
1203
+
&key,
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+
"POST",
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"https://test.example.com/oauth/token",
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+
Some(&nonce),
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+
now_secs(),
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+
);
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+
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let body = format!(
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"grant_type=refresh_token\
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&refresh_token={plaintext}\
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&client_id=https%3A%2F%2Fapp.example.com%2Fclient-metadata.json"
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+
);
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+
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let resp = app(state)
1217
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.oneshot(post_token_with_dpop(&body, &dpop))
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.await
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+
.unwrap();
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+
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assert_eq!(resp.status(), StatusCode::OK, "valid rotation must return 200");
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assert!(
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resp.headers().contains_key("DPoP-Nonce"),
1224
+
"success response must include DPoP-Nonce header"
1225
+
);
1226
+
1227
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let json = json_body(resp).await;
1228
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assert!(json["access_token"].is_string(), "access_token must be present");
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assert_eq!(json["token_type"], "DPoP");
1230
+
assert_eq!(json["expires_in"], 300);
1231
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assert!(json["refresh_token"].is_string(), "rotated refresh_token must be present");
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+
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// Rotated token must differ from the original.
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let new_rt = json["refresh_token"].as_str().unwrap();
1235
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assert_ne!(
1236
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new_rt, plaintext.as_str(),
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"rotated refresh token must differ from original"
1238
+
);
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}
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+
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#[tokio::test]
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async fn refresh_token_second_use_returns_invalid_grant() {
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// AC4.2 — after rotation the original token is deleted; second use must fail.
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let state = test_state().await;
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let key = SigningKey::random(&mut OsRng);
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let jkt = dpop_thumbprint(&key);
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+
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let plaintext = seed_refresh_token(&state, &jkt).await;
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let body = format!(
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"grant_type=refresh_token\
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&refresh_token={plaintext}\
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&client_id=https%3A%2F%2Fapp.example.com%2Fclient-metadata.json"
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);
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+
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// First use: succeeds. Clone state so the second request shares the same DB.
1256
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let nonce1 = issue_nonce(&state.dpop_nonces).await;
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let dpop1 = make_dpop_proof(
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&key,
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"POST",
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"https://test.example.com/oauth/token",
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Some(&nonce1),
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now_secs(),
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);
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let first_resp = app(state.clone())
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.oneshot(post_token_with_dpop(&body, &dpop1))
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.await
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.unwrap();
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assert_eq!(first_resp.status(), StatusCode::OK, "first use must succeed");
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// Second use of the same original token: must return invalid_grant.
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let nonce2 = issue_nonce(&state.dpop_nonces).await;
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let dpop2 = make_dpop_proof(
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&key,
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"POST",
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"https://test.example.com/oauth/token",
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Some(&nonce2),
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now_secs(),
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);
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let resp2 = app(state)
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.oneshot(post_token_with_dpop(&body, &dpop2))
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.await
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.unwrap();
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assert_eq!(resp2.status(), StatusCode::BAD_REQUEST, "second use must return 400");
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let json = json_body(resp2).await;
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assert_eq!(
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json["error"], "invalid_grant",
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"second use of consumed token must return invalid_grant (AC4.2)"
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);
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}
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#[tokio::test]
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async fn refresh_token_expired_returns_invalid_grant() {
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// AC4.3 — expired refresh tokens are rejected.
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let state = test_state().await;
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let key = SigningKey::random(&mut OsRng);
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let jkt = dpop_thumbprint(&key);
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+
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let plaintext = seed_expired_refresh_token(&state, &jkt).await;
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let nonce = issue_nonce(&state.dpop_nonces).await;
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let dpop = make_dpop_proof(
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&key,
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"POST",
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"https://test.example.com/oauth/token",
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Some(&nonce),
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now_secs(),
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);
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let body = format!(
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"grant_type=refresh_token\
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&refresh_token={plaintext}\
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&client_id=https%3A%2F%2Fapp.example.com%2Fclient-metadata.json"
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);
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let resp = app(state)
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.oneshot(post_token_with_dpop(&body, &dpop))
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.await
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.unwrap();
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assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
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let json = json_body(resp).await;
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assert_eq!(
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json["error"], "invalid_grant",
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"expired refresh token must return invalid_grant (AC4.3)"
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);
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}
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#[tokio::test]
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async fn refresh_token_jkt_mismatch_returns_invalid_grant() {
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// AC4.4 — DPoP key in proof must match the thumbprint bound to the refresh token.
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let state = test_state().await;
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let stored_key = SigningKey::random(&mut OsRng);
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let stored_jkt = dpop_thumbprint(&stored_key);
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+
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// Seed token bound to stored_key's thumbprint.
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let plaintext = seed_refresh_token(&state, &stored_jkt).await;
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+
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// Build proof with a DIFFERENT key — thumbprint will not match stored_jkt.
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let different_key = SigningKey::random(&mut OsRng);
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let nonce = issue_nonce(&state.dpop_nonces).await;
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let dpop = make_dpop_proof(
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&different_key,
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"POST",
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"https://test.example.com/oauth/token",
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Some(&nonce),
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+
now_secs(),
1347
+
);
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+
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let body = format!(
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"grant_type=refresh_token\
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&refresh_token={plaintext}\
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&client_id=https%3A%2F%2Fapp.example.com%2Fclient-metadata.json"
1353
+
);
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+
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let resp = app(state)
1356
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.oneshot(post_token_with_dpop(&body, &dpop))
1357
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.await
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.unwrap();
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+
1360
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assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
1361
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let json = json_body(resp).await;
1362
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assert_eq!(
1363
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json["error"], "invalid_grant",
1364
+
"DPoP key mismatch must return invalid_grant (AC4.4)"
1365
+
);
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+
}
1367
+
1368
+
#[tokio::test]
1369
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async fn refresh_token_client_id_mismatch_returns_invalid_grant() {
1370
+
// AC4.5 — client_id in the request must match the stored client_id.
1371
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let state = test_state().await;
1372
+
let key = SigningKey::random(&mut OsRng);
1373
+
let jkt = dpop_thumbprint(&key);
1374
+
1375
+
let plaintext = seed_refresh_token(&state, &jkt).await;
1376
+
let nonce = issue_nonce(&state.dpop_nonces).await;
1377
+
let dpop = make_dpop_proof(
1378
+
&key,
1379
+
"POST",
1380
+
"https://test.example.com/oauth/token",
1381
+
Some(&nonce),
1382
+
now_secs(),
1383
+
);
1384
+
1385
+
// Wrong client_id — does not match stored "https://app.example.com/client-metadata.json".
1386
+
let body = format!(
1387
+
"grant_type=refresh_token\
1388
+
&refresh_token={plaintext}\
1389
+
&client_id=https%3A%2F%2Fother.example.com%2Fclient-metadata.json"
1390
+
);
1391
+
1392
+
let resp = app(state)
1393
+
.oneshot(post_token_with_dpop(&body, &dpop))
1394
+
.await
1395
+
.unwrap();
1396
+
1397
+
assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
1398
+
let json = json_body(resp).await;
1399
+
assert_eq!(
1400
+
json["error"], "invalid_grant",
1401
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"client_id mismatch must return invalid_grant (AC4.5)"
1119
1402
);
1120
1403
}
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}