Side B fixes a genuine multi-user correctness bug (a shared sentinel delegate wrongly binding and blocking subsequent human voters) with a clean type-level fix (agent: Option<String>) plus a targeted regression test proving two distinct users can vote without collision. Side A also fixes a real reliability issue (OAuth fallback hitting Reddit's block page) with reasonable retry/error-detail handling, but it's a narrower infra fix with less systemic impact than B's multi-tenant correctness fix, and B's change is verified end-to-end across CLI, server, and types.
constitution · epochs · watch · epoch 3
comparison
c_ca9169f732b8 (tommy-mor) vs c_25ece8f92dc8 (tommy-mor)
download prompt · raw event · cmp_30819e65681ee2
council reasoning
B fixes a core multi-user correctness bug: a shared WEB_BROWSER_AGENT sentinel bound on first vote and blocked later humans with AgentBound; making PendingSession.agent Option and posting with no delegate restores proper human votes, with a solid two-user integration test. A is a strong production fix (require OAuth when creds exist, refresh on 401/403, stop falling back to the blocked www.reddit.com path), but it is scoped to one external integration plus a fly.toml pin, whereas B corrects the app’s auth/delegate model end-to-end.
Side A strengthens Reddit integration by making OAuth mandatory when credentials exist, adding automatic token refresh and retry on 401/403 responses, propagating token acquisition errors instead of silently falling back, and improving diagnostics with truncated error messages plus a regression test. Side B fixes an important multi-user browser voting bug by removing shared sentinel delegates and updating session types and tests, but its scope is more localized compared with A's broader resilience and correctness improvements to external API handling.
sides
A — c_ca9169f732b8 (tommy-mor)
message
[8f69c309] Require Reddit OAuth when credentials are set and refresh on 401/403. Avoid falling back to the public www.reddit.com API from cloud IPs, which returns Reddit's network-security block page. Also pin SORTER2_BASE_URL in fly.toml. Co-authored-by: Cursor <cursoragent@cursor.com>
diff preview
diff --git a/fly.toml b/fly.toml
index f0c6a39f643c204987debc177234d95a8ef44b65..ca7e0088a7efd7d58d29d808f8d89080b2bff233 100644
--- a/fly.toml
+++ b/fly.toml
@@ -5,6 +5,7 @@ primary_region = "iad"
dockerfile = "Dockerfile"
[env]
+ SORTER2_BASE_URL = "https://reddit.sorter.social"
SORTER2_DATA_DIR = "/data"
SORTER2_EVENT_LOG = "/data/events.jsonl"
PORT = "8080"
diff --git a/server/src/reddit.rs b/server/src/reddit.rs
index a874814f8927192ee62cab2d0db1efd27dcd57b7..f409764c1e1f36216f1b08107043c2eab905694c 100644
--- a/server/src/reddit.rs
+++ b/server/src/reddit.rs
@@ -283,26 +283,35 @@ async fn reddit_worker(
);
tokio::time::sleep(current_delay).await;
- if let Some(c) = &creds {
- oauth = ensure_oauth_token(&client, &oauth_token_base, c, oauth.take()).await;
- }
-
- let token = oauth.as_ref().map(|t| t.access_token.as_str());
- let fetch_base = if token.is_some() {
- tracing::debug!(
- item = %fetch_id,
- base = %oauth_api_base,
- "reddit fetch using OAuth bearer"
- );
- &oauth_api_base
- } else {
- &api_base
- };
- let url = match kind {
- FetchKind::SelfEntity => map_item_to_reddit_api(&fetch_id, fetch_base),
- FetchKind::Children => map_children_url(&fetch_id, fetch_base),
+ let outcome = match &creds {
+ Some(c) => {
+ // OAuth is required when credentials are configured — never fall
+ // back to the public www.reddit.com JSON endpoints (cloud IPs
+ // get blocked with a 403 HTML interstitial).
+ fetch_with_oauth(
+ &client,
+ &oauth_token_base,
+ &oauth_api_base,
+ c,
+ &mut oauth,
+ &fetch_id,
+ kind,
+ )
+ .await
+ }
+ None => {
+ let url = match kind {
+ FetchKind::SelfEntity => map_item_to_reddit_api(&fetch_id, &api_base),
+ FetchKind::Children => map_children_url(&fetch_id, &api_base),
+ };
+ match do_fetch(&client, &url, &fetch_id, None).await {
+ Ok(FetchOutcome::AuthRejected { status, detail }) => {
+ Err(format!("Reddit API {status}: {detail}"))
+ }
+ other => other,
+ }
+ }
};
- let outcome = do_fetch(&client, &url, &fetch_id, token).await;
match outcome {
Ok(FetchOutcome::Payload(payload)) => {
@@ -342,6 +351,12 @@ async fn reddit_worker(
current_delay = (current_delay * 2).min(Duration::from_secs(60));
notify(done, FetchJobResult::RateLimited { reset_secs });
}
+ Ok(FetchOutcome::AuthRejected { status, detail }) => {
+ let e = format!("Reddit API {status}: {detail}");
+ tracing::warn!(item = %fetch_id, err = %e, "reddit fetch auth rejected");
+ current_delay = (current_delay * 2).min(Duration::from_secs(60));
+ notify(done, FetchJobResult::Failed(e));
+ }
Err(e) => {
tracing::warn!(item = %fetch_id, err = %e, "reddit fetch failed");
current_delay = (current_delay * 2).min(Duration::from_secs(60));
@@ -357,6 +372,60 @@ enum FetchOutcome {
Payload(Value),
NotFound,
RateLimited { reset_secs: u64 },
+ /// Bearer rejected — caller should drop the cached token and retry once.
+ AuthRejected { status: StatusCode, detail: String },
+}
+
+async fn fetch_with_oauth(
+ client: &Client,
+ oauth_token_base: &str,
+ oauth_api_base: &str,
+ creds: &RedditCredentials,
+ oauth: &mut Option<OAuthToken>,
+ fetch_id: &ItemId,
+ kind: FetchKind,
+) -> Result<FetchOutcome, String> {
+ for attempt in 0..2 {
+ let force_refresh = attempt > 0;
+ *oauth = Some(
+ ensure_oauth_token(client, oauth_token_base, creds, oauth.take(), force_refresh)
+ .await?,
+ );
+ let token = oauth
+ .as_ref()
+ .expect("token set above")
+ .access_token
+ .clone();
+
+ tracing::debug!(
+ item = %fetch_id,
+ base = %oauth_api_base,
+ attempt,
+ "reddit fetch using OAuth bearer"
+ );
+
+ let url = match kind {
+ FetchKind::SelfEntity => map_item_to_reddit_api(fetch_id, oauth_api_base),
+ FetchKind::Children => map_children_url(fetch_id, oauth_api_base),
+ };
+ match do_fetch(client, &url, fetch_id, Some(&token)).await? {
+ FetchOutcome::AuthRejected { status, detail } if attempt == 0 => {
+ tracing::warn!(
+ item = %fetch_id,
+ %status,
+ %detail,
+ "reddit OAuth rejected; refreshing token and retrying"
+ );
+ *oauth = None;
+ continue;
+ }
+ FetchOutcome::AuthRejected { status, detail } => {
+ return Err(format!("Reddit API {status}: {detail}"));
+ }
+ other => return Ok(other),
+ }
+ }
+ unreachable!("loop always returns")
}
async fn ensure_oauth_token(
@@ -364,35 +433,35 @@ async fn ensure_oauth_token(
oauth_base: &str,
creds: &RedditCredentials,
existing: Option<OAuthToken>,
-) -> Option<OAuthToken> {
- if let Some(t) = existing {
- if Instant::now() < t.expires_at - Duration::from_secs(60) {
- tracing::debug!("reddit OAuth token still valid");
- return Some(t);
+ force_refresh: bool,
+) -> Result<OAuthToken, String> {
+ if !force_refresh {
+ if let Some(t) = existing {
+ if Instant::now() < t.expires_at - Duration::from_secs(60) {
+ tracing::debug!("reddit OAuth token still valid");
+ return Ok(t);
+ }
}
}
let url = format!("{}/api/v1/access_token", oauth_base.trim_end_matches('/'));
- tracing::debug!(%url, "reddit OAuth token request");
+ tracing::debug!(%url, force_refresh, "reddit OAuth token request");
let resp = client
.post(&url)
.basic_auth(&creds.client_id, Some(&creds.client_secret))
.form(&[("grant_type", "client_credentials")])
.send()
- .await;
-
- let resp = match resp {
- Ok(r) => r,
- Err(e) => {
- tracing::warn!("reddit OAuth token request failed: {e}");
- return None;
- }
- };
+ .await
+ .map_err(|e| format!("Reddit OAuth token request failed: {e}"))?;
if !resp.status().is_success() {
- tracing::warn!("reddit OAuth token HTTP {}", resp.status());
- return None;
+ let status = resp.status();
+ let body = resp.text().await.unwrap_or_default();
+ return Err(format!(
+ "Reddit OAuth token HTTP {status}: {}",
+ truncate_for_error(&body)
+ ));
}
#[derive(Deserialize)]
@@ -401,21 +470,40 @@ async fn ensure_oauth_token(
expires_in: u64,
}
- let body: TokenResponse = match resp.json().await {
- Ok(b) => b,
- Err(e) => {
- tracing::warn!("reddit OAuth token parse failed: {e}");
- return None;
- }
- };
+ let body: TokenResponse = resp
+ .json()
+ .await
+ .map_err(|e| format!("Reddit OAuth token parse failed: {e}"))?;
- tracing::debug!(expires_in = body.expires_in, "reddit OAuth token acquired");
- Some(OAuthToken {
+ tracing::info!(expires_in = body.expires_in, "reddit OAuth token acquired");
+ Ok(OAuthToken {
access_token: body.access_token,
expires_at: Instant::now() + Duration::from_secs(body.expires_in),
})
}
+fn truncate_for_error(body: &str) -> String {
+ let compact: String = body.split_whitespace().collect::<Vec<_>>().join(" ");
+ if compact.is_empty() {
+ return "(empty body)".into();
+ }
+ // Prefer the human-readable block message over dumping Reddit's CSS.
+ if let Some(idx) = compact.find("You've been blocked") {
+ let slice: String = compact.chars().skip(idx).take(160).collect();
+ return if compact.chars().count() > idx + 160 {
+ format!("{slice}…")
+ } else {
+ slice
+ };
+ }
+ let chars: String = compact.chars().take(200).collect();
+ if compact.chars().count() > 200 {
+ format!("{chars}…")
+ } else {
+ chars
+ }
+}
+
async fn do_fetch(
client: &Client,
url: &str,
@@ -460,15 +548,16 @@ async fn do_fetch(
if !status.is_success() {
let body = resp.text().await.unwrap_or_default();
+ let detail = truncate_for_error(&body);
tracing::debug!(
item = %id,
%status,
body_len = body.len(),
- body_prefix = %body.chars().take(240).collect::<String>(),
+ %detail,
"reddit non-success body"
);
if status == StatusCode::FORBIDDEN || status == StatusCode::UNAUTHORIZED {
- return Err(format!("Reddit API {status}: {body}"));
+ return Ok(FetchOutcome::AuthRejected { status, detail });
}
return Ok(FetchOutcome::NotFound);
}
@@ -716,6 +805,15 @@ fn reddit_direct_image_url(url: &str) -> bool {
mod tests {
use super::*;
+ #[test]
+ fn truncate_error_prefers_block_message() {
+ let html = r#"<style>.x{color:red}</style><div>You've been blocked by network security. To continue, log in</div>"#;
+ let msg = truncate_for_error(html);
+ assert!(msg.starts_with("You've been blocked"));
+ assert!(msg.len() < 200);
+ assert!(!msg.contains(".x{color"));
+ }
+
#[test]
fn map_subreddit_about_url() {
let id = ItemId::from_url("https://reddit.com/r/rust").unwrap();
B — c_25ece8f92dc8 (tommy-mor)
message
[b7626603] Remove browser sentinel delegates so multi-user votes work. Shared WEB_BROWSER_AGENT bound on first vote and blocked every later human; browser posts now use no delegate, matching forum UI. Co-authored-by: Cursor <cursoragent@cursor.com>
diff preview
diff --git a/cli/src/main.rs b/cli/src/main.rs
index 70435b412188a151c5e89e842a5de57f7480ddf2..a4a22724fc9e27879951f520a9241d5832982a70 100644
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -1645,8 +1645,8 @@ async fn run() -> Result<()> {
tokio::time::sleep(std::time::Duration::from_millis(poll_interval_ms)).await;
let poll: PendingSessionPollResponse =
expect_json(client.get(&poll_url).send().await?).await?;
- if !poll.agent.trim().is_empty() {
- agent_out = Some(poll.agent.clone());
+ if let Some(a) = poll.agent.as_deref().map(str::trim).filter(|s| !s.is_empty()) {
+ agent_out = Some(a.to_string());
}
if poll.complete {
token_out = poll.token;
diff --git a/server/src/api/auth.rs b/server/src/api/auth.rs
index bfddcce4dc1a77571d297648dd840e6c5bc194f8..01c02f50c19bcd62c7f1717f9b927f203c3164d0 100644
--- a/server/src/api/auth.rs
+++ b/server/src/api/auth.rs
@@ -29,12 +29,6 @@ use crate::{
write_cmd::WriteCmd,
};
-/// Delegate id for browser users who land via `/join/inv_…` (no CLI agent).
-const INVITE_BROWSER_AGENT: &str = "00000000-0000-0000-0000-000000000000:invite:web/join";
-
-/// Agent id for `/login` browser OAuth (no CLI); must pass [`parse_agent`].
-pub const WEB_BROWSER_AGENT: &str = "00000000-0000-0000-0000-000000000001:social:web/browser";
-
/// HttpOnly cookie storing the same `slug_*` bearer string the CLI uses.
pub const SLUG_SESSION_COOKIE: &str = "slug_session";
@@ -282,7 +276,7 @@ pub async fn get_join_invite(
let session = format!("p_{}", uuid::Uuid::new_v4().simple());
let redirect_next = safe_local_redirect(q.next.as_deref().or(q.redirect.as_deref()));
let s = PendingSession {
- agent: INVITE_BROWSER_AGENT.to_string(),
+ agent: None,
created_ts: now_ms(),
provider: None,
provider_id: None,
@@ -549,7 +543,7 @@ pub async fn post_choose_username(
};
let sessions = pending_sessions(&state);
- let (provider, provider_id, agent) = {
+ let (provider, provider_id) = {
let sessions_read = sessions.read().await;
let Some(s) = sessions_read.get(&form.session) else {
return api_error(StatusCode::NOT_FOUND, "unknown session", None).into_response();
@@ -560,14 +554,9 @@ pub async fn post_choose_username(
let Some(provider_id) = s.provider_id.clone() else {
return js_form_error_fragment(&form.session, "oauth not completed").into_response();
};
- (provider, provider_id, s.agent.clone())
+ (provider, provider_id)
};
- if let Err(msg) = parse_agent(&agent) {
- return js_form_error_fragment(&form.session, &format!("invalid agent format — {msg}"))
- .into_response();
- }
-
let redeem_invite = {
let sessions_read = sessions.read().await;
sessions_read
@@ -637,7 +626,8 @@ pub async fn get_web_login(
let redirect_next = safe_local_redirect(q.next.as_deref().or(q.redirect.as_deref()))
.or_else(|| Some("/".to_string()));
let s = PendingSession {
- agent: WEB_BROWSER_AGENT.to_string(),
+ // Humans sign in via the website with no AI delegate.
+ agent: None,
created_ts: now_ms(),
provider: None,
provider_id: None,
@@ -698,7 +688,7 @@ pub async fn post_pending_session(
);
let poll_url = format!("/api/v0/pending-session/{session}");
let s = PendingSession {
- agent: agent_naked,
+ agent: Some(agent_naked),
created_ts: now_ms(),
provider: None,
provider_id: None,
diff --git a/server/src/api/ui_html.rs b/server/src/api/ui_html.rs
index 578e5844e86f7c2666c8e37ef9fa90c01d20d134..57a0139928b09034122398f8f3362cbdbcc5862e 100644
--- a/server/src/api/ui_html.rs
+++ b/server/src/api/ui_html.rs
@@ -276,7 +276,7 @@ async fn dispatch_ui_action(
&session.bearer,
room.clone(),
thread_tag.clone(),
- Some(crate::api::auth::WEB_BROWSER_AGENT.to_string()),
+ None,
text,
)
.await
diff --git a/server/src/state.rs b/server/src/state.rs
index 648ab5304764a329fcabbbbcd3782b94e3e005a8..8ea84dcf9b1df8f8037e913cdd94e5908e6d5d55 100644
--- a/server/src/state.rs
+++ b/server/src/state.rs
@@ -21,7 +21,8 @@ pub struct InviteState {
#[derive(Debug, Clone)]
pub struct PendingSession {
- pub agent: String,
+ /// CLI `identity start` delegate (`uuid:rig:model`). `None` for browser `/login` and `/join`.
+ pub agent: Option<String>,
pub created_ts: i64,
pub provider: Option<String>,
pub provider_id: Option<String>,
diff --git a/server/tests/integration_ui.rs b/server/tests/integration_ui.rs
index d242abff5769cc704b3c8070d7456e5788c31a45..22b16c87d5ecdb5272a017af70b5353d8c39c6e8 100644
--- a/server/tests/integration_ui.rs
+++ b/server/tests/integration_ui.rs
@@ -418,6 +418,99 @@ async fn test_web_login_carries_vote_pair_next_into_pending_session() {
let sessions = state.pending_sessions.read().await;
let pending = sessions.get(&session).expect("pending session");
assert_eq!(pending.redirect_next.as_deref(), Some(next));
+ assert_eq!(
+ pending.agent, None,
+ "browser /login must not invent a sentinel delegate"
+ );
+}
+
+#[tokio::test]
+async fn test_vote_compare_two_users_both_succeed_without_delegate() {
+ let (addr, _tmp, _log, state, _handle) = create_test_server_with_state().await;
+ let client = reqwest::Client::new();
+ let alice = test_bearer();
+ let bob = seed_user_token(&state, "bob", "bobtok", "bobsecret").await;
+
+ // Define items first (votes require existing item bodies).
+ let seed = ui_post_ingest_rpc(
+ "public",
+ "multi-vote",
+ "~/multi-a {alpha}\n~/multi-b {beta}\n",
+ );
+ let seed_resp = client
+ .post(format!("http://{addr}/ui"))
+ .header("Authorization", format!("Bearer {alice}"))
+ .form(&[("__rpc__", seed.as_str())])
+ .send()
+ .await
+ .unwrap();
+ assert_eq!(seed_resp.status(), reqwest::StatusCode::OK);
+ let seed_js = seed_resp.text().await.unwrap();
+ assert!(
+ !seed_js.contains("auth-error"),
+ "item seed must succeed, got: {seed_js}"
+ );
+
+ for (bearer, left, right, explanation) in [
+ (&alice, "3", "1", "alice prefers a"),
+ (&bob, "1", "3", "bob prefers b"),
+ ] {
+ let rpc = ui_vote_compare_post_rpc(
+ "public",
+ "multi-vote",
+ "~/multi-a",
+ "~/multi-b",
+ left,
+ right,
+ explanation,
+ );
+ let resp = client
+ .post(format!("http://{addr}/ui"))
+ .header("Authorization", format!("Bearer {bearer}"))
+ .form(&[("__rpc__", rpc.as_str())])
+ .send()
+ .await
+ .unwrap();
+ assert_eq!(resp.status(), reqwest::StatusCode::OK);
+ let js = resp.text().await.unwrap();
+ assert!(
+ !js.contains("delegate already bound"),
+ "human vote must not hit shared-sentinel AgentBound ({explanation}), got: {js}"
+ );
+ assert!(
+ !js.contains("auth-error"),
+ "human vote must succeed ({explanation}), got: {js}"
+ );
+ assert!(
+ js.contains("vote-edge-history-region"),
+ "vote should morph edge history ({explanation}), got: {js}"
+ );
+ }
+
+ let reduced = state.reduced.read().await;
+ let human_votes: Vec<_> = reduced
+ .ingests_ordered
+ .iter()
+ .filter_map(|id| reduced.ingests_by_id.get(id))
+ .filter(|ing| ing.raw.contains("prefers"))
+ .collect();
+ assert_eq!(human_votes.len(), 2, "expected two vote ingests");
+ let mut principals: Vec<&str> = human_votes.iter().map(|i| i.principal.as_str()).collect();
+ principals.sort();
+ assert_eq!(principals, ["bob", "testuser"]);
+ for ing in &human_votes {
+ assert!(
+ ing.delegate.is_none(),
+ "browser votes must have no delegate, principal={} delegate={:?}",
+ ing.principal,
+ ing.delegate
+ );
+ }
+ assert!(
+ reduced.agent_bindings.is_empty(),
+ "human votes must not create AgentBound entries: {:?}",
+ reduced.agent_bindings
+ );
}
#[tokio::test]
diff --git a/server/tests/support/mod.rs b/server/tests/support/mod.rs
index 4a620eaa875e7a1145f2a4e82cc4ff2be21d5345..a5306fa2c4c9fda47e43fc0de42407b66e23eced 100644
--- a/server/tests/support/mod.rs
+++ b/server/tests/support/mod.rs
@@ -70,20 +70,25 @@ pub async fn rpc_batch(
response.json().await.unwrap()
}
-pub async fn seed_test_token(state: &AppState) {
+/// Seed a user + bearer into reducer state (not appended to the event log).
+/// Returns the `slug_<token_id>_<secret>` bearer string.
+pub async fn seed_user_token(
+ state: &AppState,
+ username: &str,
+ token_id: &str,
+ secret: &str,
+) -> String {
let registered = Event::UserRegistered(UserRegistered {
ts: 0,
- username: "testuser".to_string(),
+ username: username.to_string(),
provider: "test".to_string(),
- provider_id: "testuser".to_string(),
+ provider_id: username.to_string(),
});
- let token_id = "testtok";
- let secret = "secret";
let salt = "salt";
let token_hash = sha256_hex(&format!("{salt}:{secret}"));
let ev = Event::TokenIssued(TokenIssued {
ts: 0,
- username: "testuser".to_string(),
+ username: username.to_string(),
token_id: token_id.to_string(),
token_hash,
salt: salt.to_string(),
@@ -92,6 +97,11 @@ pub async fn seed_test_token(state: &AppState) {
let mut r = state.reduced.write().await;
r.apply_event(registered);
r.apply_event(ev);
+ format!("slug_{token_id}_{secret}")
+}
+
+pub async fn seed_test_token(state: &AppState) {
+ let _ = seed_user_token(state, "testuser", "testtok", "secret").await;
}
pub async fn create_test_server_with_state() -> (
diff --git a/test/oauth.clj b/test/oauth.clj
index 3cbf496005e906ad6c579d44ac8c4055ee60d063..6911ac34a55707acda9f9ce091c079964649a252 100644
--- a/test/oauth.clj
+++ b/test/oauth.clj
@@ -186,8 +186,9 @@
(:token poll-json))))))))
(defn fetch-bearer-token!
- "Simulate browser OAuth + username choice; returns `slug_…` bearer token.
- Ingest `--delegate` must match this agent string for `AgentBound` on first write."
+ "Simulate CLI identity OAuth + username choice; returns `slug_…` bearer token.
+ Pass `:agent` (default local/dev) when the test will CLI-ingest with `--delegate`
+ so first write can `AgentBound`. Browser UI posts use no delegate."
[base-url & {:keys [username agent] :or {username "intuser" agent default-agent}}]
(let [token (complete-registration! base-url :username username :agent agent)]
(when-not (str/starts-with? token "slug_")
diff --git a/types/src/lib.rs b/types/src/lib.rs
index 211493935d19582607f5c87fb492faf47bdc6f53..0c4295b15908ea7a2303dac4c42015ded51e4d73 100644
--- a/types/src/lib.rs
+++ b/types/src/lib.rs
@@ -535,7 +535,9 @@ pub struct PendingSessionStartResponse {
pub struct PendingSessionPollResponse {
pub ok: bool,
pub complete: bool,
- pub agent: String,
+ /// Present for CLI identity sessions; omitted for browser `/login` / `/join` (no delegate).
+ #[serde(default, skip_serializing_if = "Option::is_none")]
+ pub agent: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub user: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
Hardlinks — judgments / attempts / prompt
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attempts
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