docs(tasks): decompose review-002 into 24 tasks (23 implementation + 1 bracketed follow-up)

Decomposition of docs/reviews/002-post-remediation-review.md per its
5-unit remediation plan:

- Unit 1 (security-critical): gw15-publish-body-cap,
  prj16-schema-via-call (CF-004 filed alkcall-side), fwd13-dot-segments,
  fwd16-missing-capability, oai11-ref-memoization
- Unit 2 (timeout/terminality): ws13-idle-progress,
  fwd15-stream-timeout, cli01-retry-after-budget, con17-mcp-pagination,
  con18-wss-sweep-exit
- Unit 3 (projection/docs): projection-truthfulness, mcp-batch-cap,
  gw16-status-drift
- Unit 4 (spec-import): yaml-normalization, oai13-path-item-wildcards,
  import-loudness-cluster, js01-placeholder-check,
  fwd17-19-contract-decisions
- Unit 5 (WS polish + tests): con18b-ws-polish,
  client-policy-wire-tests, cov-deployment-knobs, cov13-dead-code,
  srv11-srv12-router-ordering
- review-002-bracketed-followup: tentatively planned post-bulk pass
  (stale-check, OQA-18 enforcement decision, CON-08/09 close() lever,
  cross-crate re-checks) — deliberately not serialized against the
  bulk

Also: review-002 numbering repair (CON-14 was double-booked; MCP
pagination now CON-14, from_wss monitor renumbered CON-18, missing
CON-14 section added).

taskgraph: 66 valid, no cycles; 24 pending (all review-002);
gen-1/gen-2 parallel waves identified; workflow-cost hotspots are
prj16 (12.8) and ws13 (11.1), both carrying the reviewed slicing
guidance in their Notes.
This commit is contained in:
2026-08-30 10:50:34 +00:00
parent 5452785f0d
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---
id: review-002-gw15-publish-body-cap
name: Cap /publish body buffering pre-newline + explicit body-limit layer (GW-15)
status: pending
depends_on: []
scope: moderate
risk: medium
impact: component
level: implementation
tags: [gateway, review-002, security]
---
## Description
Review 002 GW-15 [major] — `/publish` lost both claimed memory bounds
in the GW-06 streaming rewrite. Verified at tree `91483a7`:
1. **No body limit on the route.** `publish_handler` takes raw
`axum::body::Body` (`src/gateway/routes.rs:249-253`). axum's
2 MiB `DefaultBodyLimit` is a request *extension* consulted only by
extractors (axum-core `request_parts.rs` returns the raw body
untouched) — a raw-Body handler has **no** default limit. The
module doc's claim ("in addition to axum's own 2 MiB default body
limit") is false on this route.
2. **Unbounded line buffer.** `BufferedLines::next_line`
(`routes.rs:425-448`) enforces `MAX_PUBLISH_LINE_BYTES` only when a
`\n` is found; bytes accumulate in `self.buffer` unboundedly until
then, and the trailing-EOF `std::mem::take(&mut self.buffer)` path
has no cap check at all.
Concrete failure: unauthenticated `POST /publish` with chunked
transfer-encoding streaming `'a'` forever (no newline) → heap grows
with the upload until OOM; each poll also re-scans the whole buffer
from index 0 → O(n²) CPU on top. This is the SRV-03 class one route
over (SRV-03 fixed `/mcp`; `/publish` regressed into the same class
via the streaming rewrite).
## Acceptance Criteria
- [ ] `BufferedLines` errors (terminal `LineError::LineCap` → the same
INVALID_INPUT family the line-cap error uses today) once
`self.buffer.len() > MAX_PUBLISH_LINE_BYTES`, checked *before*
extending, even with no newline seen — the trailing-EOF
`mem::take` path cannot exceed the cap
- [ ] The publish route (or the whole gateway router) carries an
explicit request-body-limit layer so it does not depend on
extractor-side defaults for raw-Body handlers (size = the 2 MiB
convention; note in module doc)
- [ ] Wire test: chunked upload with no `"\n"` for > cap bytes is
rejected with the documented status/body (not 200, not OOM)
- [ ] Wire test: EOF without newline after > cap buffered bytes also
rejected (the `mem::take` path)
- [ ] Existing publish tests still pass (first-line handling, NDJSON
streaming, schema validation, caps on terminated lines)
- [ ] `cargo test`, `cargo clippy --all-targets -- -D warnings`,
`cargo fmt --check` pass
## References
- docs/reviews/002-post-remediation-review.md (Part C', GW-15; Part G', COV-12 `BufferedLines` hot spot)
- docs/architecture/decisions/068-gateway-publish-endpoint.md
- src/gateway/routes.rs:249-253 (handler), 395-470 (BufferedLines)
- tasks/gateway/review-001-publish-schema-validation-robust.md (the cache this must not stale)
## Notes
The line-cap test that exists today (`publish_line_exceeding_cap…`)
short-circuits at the route level in single-chunk delivery — the new
pre-extend check must be exercised with a **streamed** (multi-chunk,
never-newline) body, which is the shape the old test cannot see. Keep
`MAX_PUBLISH_LINE_BYTES` as the single cap constant; a separate total
cap is optional (the layer limit bounds the total once landed).
GW-16 (the 400-vs-422 drift on the cap error's status) is deliberately
NOT in scope here — see review-002-gw16-status-drift; land the cap with
today's status first, then normalize statuses in that task to avoid
churn in the same lines.
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---
id: review-002-gw16-status-drift
name: Unify INVALID_INPUT status on hand-rolled publish/batch paths + sink-deadline decision (GW-16, GW-17)
status: pending
depends_on: [review-002-gw15-publish-body-cap]
scope: narrow
risk: low
impact: component
level: implementation
tags: [gateway, review-002]
---
## Description
Two review-002 gateway status/deadline findings, same files
(`routes.rs`, `dispatch.rs`), sequenced after the GW-15 body-cap task
because GW-15 adds one more hand-rolled status site:
- **GW-16**: the documented mapping is `INVALID_INPUT → 422`
(http-server.md:361), and mid-stream publish validation correctly
emits 422. But the new pre-dispatch paths hand-build
`CallError::invalid_input`-shaped responses with
`StatusCode::BAD_REQUEST`: empty body, missing `operation`, missing
`chunk`, invalid first-line JSON (:257-278), the line-cap error
(:459-464), and the `/batch` over-cap reject (:173-184). Same error
class, two statuses depending on where it fires — the GW-03 drift
class one table row down.
- **GW-17**: the documented 30 s deadline includes "the `/publish`
final envelope" (http-server.md:381-384) but `invoke_sink` has no
timeout (`dispatch.rs:132-145`) — the module doc justifies it as
"bounded by the client's upload," which bounds chunk arrival, not
the handler's final await. A hung sink handler parks the HTTP
connection forever.
## Acceptance Criteria
- [ ] Decide + implement the body-shape-fault status: either (a) route
all hand-rolled `INVALID_INPUT` responses through
`call_error_to_http_response_with_identity` (making them 422
like the documented mapping), or (b) sanction 400-for-body-shape
in http-server.md's table explicitly (documenting which paths
are "request shape" vs "per-chunk shape"). Implementer's choice;
whichever it is, `/publish` and `/batch` agree and the doc table
names both statuses' trigger conditions.
- [ ] GW-17: decide + implement: (a) wrap the sink handler's
completion in the same 30 s `tokio::time::timeout` family the
Once-op invoke uses (new error envelope on trip), or (b) amend
http-server.md to exclude the final envelope from the deadline
contract. Prefer (a) — the documented contract is the older
decision and hung-forever requests are the failure mode review
001 filed twice.
- [ ] Tests: each hand-rolled path's status asserted (publish
first-line/empty/line-cap/batch-cap); sink-deadline test with a
hung sink handler (mirroring dispatch.rs's hung-handler test)
if (a)
- [ ] http-server.md error/deadline tables updated to match the
implemented choice
- [ ] `cargo test`, `cargo clippy --all-targets -- -D warnings`,
`cargo fmt --check` pass
## References
- docs/reviews/002-post-remediation-review.md (Part C', GW-16, GW-17)
- src/gateway/routes.rs:173-184, 257-278, 459-464 (the hand-rolled 400s), dispatch.rs:132-145 (the sink await), error.rs:51 (the 422 mapping)
- docs/architecture/http-server.md:361 (the error table), :381-388 (the deadline contract)
- tasks/gateway/review-002-gw15-publish-body-cap.md (lands the line-cap error this task then normalizes)
## Notes
Do this after GW-15 so the line-cap path's final status is chosen once
(avoid two commits churning the same lines). ADR-023 governs the
error-code discipline — if (b) is chosen for GW-16, note the
body-shape-vs-chunk-shape distinction there or in http-server.md so
the next projection refresh captures it.
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---
id: review-002-prj16-schema-via-call
name: Block Internal-op schema disclosure via services/schema over /call (PRJ-16, cross-crate CF-004)
status: pending
depends_on: []
scope: moderate
risk: medium
impact: project
level: implementation
tags: [gateway, security, review-002, cross-crate]
---
## Description
Review 002 PRJ-16 [major, security]. Internal/ACL-restricted op specs
are readable through the *op* path even though the GET `/schema` route
was fixed in review-001 (SRV-02):
- `call_handler` (`src/gateway/routes.rs:120-133`) pre-checks only the
**outer** op name — `services/schema` is External with default ACL,
so the pre-check passes.
- `registry.invoke` dispatches to alkcall's `services_schema_handler`
(`alkcall src/registry/discovery.rs:327-343`), which does a bare
`registry.registration(name)``spec_to_json` with **no visibility
and no AccessControl check**.
`POST /call {"operation":"services/schema","input":{"name":"secret/op"}}`
→ the full spec (input/output/error schemas + required_scopes) of any
Internal op, unauthenticated. Same hole via the MCP `call` tool. The
regenerated to_openapi doc asserts "Internal (hidden from HTTP
discovery, GW-02)" — currently false at runtime. The alkcall-side
instance is filed as **CF-004** in
`alkcall/docs/reviews/consumer-findings-ledger.md` (the handler-level
fix there is the complete one; this task is the alkhttp-local layer).
## Acceptance Criteria
- [ ] alkhttp-side guard: before dispatch, when the requested
operation resolves to a `services/schema`-family handler, apply
the same is_internal_op + access_check_for_op pre-checks to the
**inner `name` input** as GET `/schema` does (404 for Internal,
403 for ACL denial, mirroring routes.rs:151-156)
- [ ] Implementer's choice on mechanism (options: a dispatch-path hook
in `call_handler`/`batch_handler`/`subscribe_handler`; an
alkhttp-side wrapper around the registry that intercepts
`services/schema` inputs; a GatewayDispatch-level check) — the
invariant is transport-level: **no alkhttp transport may fetch a
spec the GET `/schema` route would deny for the same identity**
- [ ] Test matrix mirroring the GET /schema tests: `/call` on
services/schema{internal-op} → 404; unauthorized identity →
403; MCP `call` tool with the same input → same result
(feature-gated `mcp` test)
- [ ] A comment/ADR-note recording that the complete fix is
alkcall-side (CF-004) and this task is the local layer — when
CF-004 lands, the alkhttp guard becomes defense-in-depth (do NOT
remove it; the per-transport check stays)
- [ ] `cargo test`, `cargo clippy --all-targets -- -D warnings`,
`cargo fmt --check` pass (plus `--all-features` if the mcp test lands)
## References
- docs/reviews/002-post-remediation-review.md (Part F', PRJ-16)
- alkcall/docs/reviews/consumer-findings-ledger.md (CF-004, filed 2026-08-30)
- alkcall/src/registry/discovery.rs:327-343 (the unchecked handler)
- src/gateway/routes.rs:120-133 (outer-name-only pre-check), 151-156 (the correct GET /schema checks to mirror)
- docs/architecture/decisions/015-privilege-model-and-authority-context.md
## Notes
The three gateway invoke routes (`/call`, `/batch`, `/subscribe`) all
dispatch through the same spine, so a single interception point (if
found) covers all three + MCP; if the mechanism is route-local, mirror
it in all three pre-check sites. Do not block on the alkcall fix —
this task is shippable independently and the alkcall lead time is
unknown. If CF-004 lands first, re-scope this task to defense-in-depth
assertions only.