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fix(devin): suppress untrusted Connect trailer text - #5143

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@luvs01 luvs01 commented Sep 19, 2026 •

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Motivation

Devin cloud Connect-RPC EOS trailers propagated upstream-controlled error.message text into adapter error events, API responses, and request/diagnostic logs. That message can reflect the credential carried by the request.

Description

  • Trailer parsing now allowlists known Connect code values via safeConnectCode; unrecognized codes drop to undefined.
  • The raw trailer message stays inside the parser — still used for quota-refusal (TRAILER_QUOTA_RE), opaque-denial detection, and trace-id extraction — but never reaches a thrown CloudChatError. Errors now carry only the allowlisted code and the hex trace id.
  • The blocklist-hint branch no longer appends the verbatim cloud message.

Tests

  • bun test tests/providers/devin-hardening.test.ts — 35 pass, including a regression that reflects a fake credential in the trailer code and message and asserts the thrown error contains neither.

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Summary by CodeRabbit

  • Bug Fixes

    • Cloud chat errors now show sanitized diagnostics instead of potentially sensitive upstream details.
    • Unrecognized connection error codes are handled safely.
    • Temporary service-limit errors preserve retry timing and provide clearer retry guidance.
    • Automatic recovery continues to respect replay and wait-time limits.
    • Retry delays exceeding the wait limit are surfaced safely without exposing sensitive details.
  • Documentation

    • Clarified that cloud connection diagnostics include only approved error codes and trace identifiers.

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📝 Walkthrough

Walkthrough

The change sanitizes Devin Connect-RPC trailer errors, preserves typed retry delays, updates 429 replay handling, documents diagnostic limits, and adds coverage for credential redaction, retry replay, capped delays, and empty responses.

Changes

Devin cloud trailer hardening

Layer / File(s) Summary
Sanitized trailer error contract
src/adapters/devin/cloud-direct/chat.ts
Trailer parsing now allowlists Connect codes, extracts retry delays, tracks opaque denials, and prevents raw trailer messages from reaching CloudChatError.
Typed retry delay integration
src/adapters/devin/cloud-direct/stated-reset-retry.ts
429 retry handling now uses CloudChatError.retryAfterSeconds before falling back to message parsing.
Validation and diagnostic documentation
tests/providers/devin-hardening.test.ts, tests/providers/devin-stated-reset-retry.test.ts, structure/adapters/registry.md
Tests cover credential redaction, retry replay, delay ceilings, and empty responses. Documentation describes the sanitized diagnostics.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant streamChatEvents
  participant ConnectTrailerParser
  participant statedResetRetry
  streamChatEvents->>ConnectTrailerParser: Parse Connect trailer
  ConnectTrailerParser-->>streamChatEvents: Return CloudChatError with typed delay
  streamChatEvents->>statedResetRetry: Apply 429 retry policy
  statedResetRetry-->>streamChatEvents: Replay request or surface sanitized error
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❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 4 files. (1 skipped: 1 … Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly and concisely describes the primary change: suppressing untrusted Connect trailer text in Devin errors and responses.
Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 4 files. (1 skipped: 1 unsupported.)

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✅ Deterministic PR hygiene checks passed.

@github-actions github-actions Bot added bug Something isn't working review-ready labels Sep 19, 2026
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✅ READY

  • all PR quality gates passed; the review readiness checklist is complete.

Review readiness checklist

  • ✅ All CI tests are green on my local testing.
  • ✅ I pushed my PR to the latest dev commit.
  • ✅ I resolved all correct Codex and CodeRabbit findings.
  • ✅ My PR is ready for review.

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Maintainers notified: @lidge-jun @Ingwannu

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리뷰 · 우선순위 70 / 80

Devin 클라우드가 채팅 끝에 보내는 에러 글이 밖으로 나가지 않게 막아요. 그 글에는 요청에 넣었던 키가 그대로 들어 있을 수 있어요. 예전에는 그 글이 에러, API 응답, 로그에 남았어요.

이 PR은 클라우드가 준 코드가 이미 아는 Connect 코드일 때만 코드로 받아요. 모르는 문자열은 버려요. 클라우드가 준 문장은 이 파일 안에만 두고, 세 가지만 봐요. 사용량 한도인지, "an internal error occurred"인지, 추적 번호인지. 밖으로 던지는 에러에는 코드와 추적 번호만 넣어요. 도구 설명이 막혔을 때 뒤에 붙이던 클라우드 원문도 빼요. 테스트는 가짜 키를 코드와 문장에 넣고, 던진 에러에 그 키가 없는지 확인해요. 베이스는 dev예요. 같은 일을 하는 다른 열린 PR은 없어요. types.ts와 config.ts를 나누는 일과는 관계없어요.

라인 src/adapters/devin/cloud-direct/chat.ts 1544행 - 한도 문장 "Your limit will reset in 35 seconds"는 상태 번호를 429로 정할 때만 써요. 던지는 문장에는 안 남아요. 429와 "다시 시도해도 된다"는 표시는 남아요. 몇 초를 기다릴지만 빠져요. streamChatEventsWithResetRetry는 그 문장에서 기다리는 시간을 읽어요 (src/adapters/devin/cloud-direct/stated-reset-retry.ts 81행). 초가 없으면 기다리지 않고 바로 실패해요. 한도가 풀릴 때까지 같은 요청을 다시 보내던 일이 끊겨요. 도구가 있으면 1528행의 다른 문장으로 먼저 던지고, 없어도 1544행 문장으로 던져요. 둘 다 대기 초가 없어요. 그 테스트는 에러를 직접 만들어서 이 함수를 안 거쳐요. 그래서 지금 테스트는 통과해도 이 일은 안 잡혀요. 밖으로 보내는 문장도 이 에러 문장을 그대로 붙여요 (src/adapters/devin.ts 666행). 바깥에서 읽는 재시도 시간도 같이 사라져요.

라인 tests/providers/devin-hardening.test.ts 새 테스트 - 가짜 키가 문장에 없는지만 봐요. 아는 코드가 에러에 남는지는 안 봐요. 한도 문장이 429로 남고 대기 초가 사는지는 안 봐요.

메인테이너의 판단이 필요한 지점

한도 대기 시간을 살릴지 정해 주세요. 클라우드 원문을 다시 붙이면 키 문제가 돌아와요. 초 숫자만 읽어서, 우리가 쓴 문장으로 넣어야 해요.

safeConnectCode는 src/oauth/devin/register-user.ts에 같은 함수가 이미 있어요. 복사해 둘지 한곳으로 모을지는 지금 급하지 않아요.

너의 추천

머지하기 전에 대기 초만 꺼내서 에러 문장에 넣어라. 35초를 읽으면 Your limit will reset in 35 seconds를 우리가 써서 붙여라. 클라우드가 준 글은 그대로 두지 마라. streamChatEvents를 실제로 통과하는 테스트에 그 경우를 넣어라. 키를 가리는 고침은 맞다. 이 PR을 닫을 중복은 없다.

이 댓글은 grok-bot이 작성했습니다

@lidge-jun
lidge-jun force-pushed the fix/devin-trailer-suppression branch from a191178 to 5e34243 Compare September 19, 2026 12:40
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추가 리뷰 · 우선순위 40 / 80

지난 리뷰에서 말한 문제는 고쳤어요. 클라우드 문장을 빼면서, 한도가 풀릴 때까지 기다리던 초도 같이 사라졌었죠. 이번 커밋은 그 초만 숫자로 살려요.

클라우드가 준 글은 여전히 파서 밖으로 안 나가요. 키를 가리는 고침은 그대로예요. 그 글이 아직 안에 있을 때 "몇 초 뒤"만 읽어요. 읽은 숫자는 에러에 따로 넣어요. 이름은 retryAfterSeconds예요. 기다리는 함수는 문장을 긁지 않고 이 숫자를 먼저 봐요. 문장에 힌트가 남은 다른 에러만 예전처럼 문장에서 읽어요. 새 테스트는 연결이 끝날 때 보내는 프레임에 "35초"와 가짜 키를 넣고, 35초를 기다린 다음 같은 요청을 한 번 더 보내는지 확인해요. 베이스는 dev예요. 같은 일을 하는 다른 열린 PR은 없어요.

라인 src/adapters/devin.ts 681행 - 안에서 기다리는 길은 고쳐졌어요. 그 기다림을 포기하면 밖으로 나가는 문장에는 초가 없어요. 뒤에 붙는 글은 "Cognition chat failed"와 코드, 추적 번호뿐이에요. 초 숫자는 이 어댑터 이벤트에 안 실려요. 30분을 넘는 대기이거나, 로컬 재시도를 꺼 둔 경우에는 클라이언트가 몇 초를 기다릴지 알 수 없어요. 예전에는 그 문장에 "몇 분 뒤"가 있어서 바깥에서도 읽혔어요.

메인테이너의 판단이 필요한 지점

로컬에서 기다리는 것만 살리면 충분한지 정해 주세요. 밖으로 나가는 문장에도 초를 알리려면, 클라우드가 준 글은 붙이지 말고 우리가 읽은 숫자로 한 줄만 써야 해요.

너의 추천

35초나 13분처럼 30분 안의 한도는 이 고침으로 안에서 기다려요. 그 부분은 맞아요. 30분을 넘는 한도까지 클라이언트에게 알리려면, 던지는 문장에 우리가 만든 한 줄을 더하세요. 키를 가리는 고침은 유지하세요. 이 PR을 닫을 중복은 없어요.

이 댓글은 grok-bot이 작성했습니다

@luvs01

luvs01 commented Sep 19, 2026

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Done in 81e422d: the outward Cognition chat failed message now carries our own
etry after ~NNs wording from the typed
etryAfterSeconds field (omitted when absent), so a client can tell how long to wait when local retry gives up, exceeds the cap, or is disabled. Raw trailer text stays suppressed — new tests assert the seconds wording is present while the trailer body/credential never reaches the error.

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luvs01 marked this pull request as ready for review September 19, 2026 16:26
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Actionable comments posted: 1


  • 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
In `@structure/adapters/registry.md`:
- Around line 80-82: Update the adapter contract documentation near the
CloudChatError diagnostics to state that retryAfterSeconds is a safe typed value
that adapters may propagate or render as generated “retry after ~Ns” wording
alongside the allowlisted error code and hexadecimal trace ID, while raw
upstream message text must remain internal to the parser.

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  • src/adapters/devin/cloud-direct/chat.ts
  • src/adapters/devin/cloud-direct/stated-reset-retry.ts
  • structure/adapters/registry.md
  • tests/providers/devin-hardening.test.ts
  • tests/providers/devin-stated-reset-retry.test.ts

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Comment thread structure/adapters/registry.md
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github-actions Bot marked this pull request as draft September 19, 2026 16:35
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luvs01 marked this pull request as ready for review September 19, 2026 17:58
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@luvs01
luvs01 force-pushed the fix/devin-trailer-suppression branch from 81e422d to 49a125b Compare September 19, 2026 21:44
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luvs01 marked this pull request as ready for review September 19, 2026 21:44
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luvs01 force-pushed the fix/devin-trailer-suppression branch from 49a125b to 95bd9ee Compare September 20, 2026 04:00
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I approved the hosted runs for exact head 95bd9ee9801e0be88e82831c6d5b156d0689748b after confirming there are no workflow or dependency-manifest changes. The typed retry delay and content-free trailer boundary address the prior blocker. Ordinary approval waits for the hosted checks and a current-dev merge result.

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One exact-head review thread remains unresolved in structure/adapters/registry.md: the documented trailer boundary names only the allowlisted code and trace ID, while the implementation now intentionally propagates typed retryAfterSeconds and may render generated retry after ~Ns wording. Please update the contract text to name that safe typed field while keeping raw upstream prose internal, resolve the thread, and let the replacement-head checks finish before re-requesting approval.

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github-actions Bot marked this pull request as draft September 21, 2026 10:19
Connect-RPC EOS trailers propagated upstream-controlled error.message text into adapter error events, API responses, and diagnostic logs, and that text can reflect the credential carried by the request. Parse trailers with an allowlist for known Connect codes, keep the raw message inside the parser for quota/opaque-denial detection, and throw content-free errors carrying only the allowlisted code and hex trace id.
The trailer suppression left the thrown CloudChatError without the upstream "limit will reset in N" sentence that streamChatEventsWithResetRetry scraped for its cooldown, so a stated-reset 429 failed immediately instead of waiting out the quota window. Parse the delay inside the trailer parser while the raw text still exists and carry it as a typed retryAfterSeconds field; the retry prefers that field and keeps the message scrape for errors whose text still carries a hint. Adds a regression test that drives the real Connect EOS trailer path.
@luvs01

luvs01 commented Sep 22, 2026

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Consolidated into #5541 as a single related-function aggregate.

Source head: 4b723ef5d623ee9b24e7f16f989beeeb9edd94db. Replacement head: 6f2901b117b6d8a9a7eae503e795b74749b6e7e0.

All unique Devin contribution commits are carried with original authors and provenance. Six match complete stable patch IDs; the alias-host change matches the code/test/runtime-document patch IDs and its one table-row conflict preserves both contracts. The common f700c56 role-fixture change is already present in both corresponding provider objects on the base, so it was not duplicated. Integration regressions verify exact 429 timing, no raw credential reflection, one physical send, and the alias-bound EU tenant path. Devin tests: 252 passed; layout:18 passed; ratchet:9 passed; typecheck/structure/privacy passed. Full cross-platform CI and independent review remain pending.

Closing this duplicate standalone review entry at the author's request after verifying migration. This is not a merge or release claim; remaining integration checks and reviews are tracked on the draft replacement. Original branches are retained.

@luvs01 luvs01 closed this Sep 22, 2026
lidge-jun added a commit that referenced this pull request Sep 22, 2026
…nect trailers (#5574)

* fix(devin): suppress untrusted Connect trailer text

Connect-RPC EOS trailers propagated upstream-controlled error.message text into adapter error events, API responses, and diagnostic logs, and that text can reflect the credential carried by the request. Parse trailers with an allowlist for known Connect codes, keep the raw message inside the parser for quota/opaque-denial detection, and throw content-free errors carrying only the allowlisted code and hex trace id.

(cherry picked from commit 50eab5a)
(cherry picked from commit 6efc759)

* fix(devin): preserve stated reset delay on content-free trailer errors

The trailer suppression left the thrown CloudChatError without the upstream "limit will reset in N" sentence that streamChatEventsWithResetRetry scraped for its cooldown, so a stated-reset 429 failed immediately instead of waiting out the quota window. Parse the delay inside the trailer parser while the raw text still exists and carry it as a typed retryAfterSeconds field; the retry prefers that field and keeps the message scrape for errors whose text still carries a hint. Adds a regression test that drives the real Connect EOS trailer path.

(cherry picked from commit 7b7a8b8)
(cherry picked from commit b841abd)

* fix(devin): carry the stated reset delay in the outward trailer error

(cherry picked from commit 4b723ef)
(cherry picked from commit 82d452c)

* fix(devin): prevent reset waits from holding active-turn capacity

(cherry picked from commit df07bc6)
(cherry picked from commit 98c9298)

* fix(devin): pin the adapter's zero reset wait and correct the surface comment

(cherry picked from commit 0e73736)
(cherry picked from commit a2936ca)

* test(devin): prove the zero reset wait through the adapter's own sends

The module-mock spy leaked into sibling test files in the same bun test process, so devin-stated-reset-retry and devin-stated-reset-hardening saw a stubbed helper. Drive the real runTurn with a stubbed fetch returning a Connect EOS-trailer refusal instead: the asserted signals are the surfaced error text and the physical GetChatMessage count, which fail fast under the 5s abort signal if the adapter's maxWaitMs: 0 pin is removed or weakened. Register the file in the test layout map and fixture.

(cherry picked from commit 1abc035)
(cherry picked from commit 2c4bf00)

* fix(devin): bind alias tenant host to credential key

(cherry picked from commit d225fc2)
(cherry picked from commit 9b54aeb)

* test(devin): verify sanitized reset refusals across bound tenants

Reconcile #5455 zero-wait coverage with #5143 content-free Connect diagnostics: retain 429 and generated retry timing while proving reflected credentials do not escape and only one inference send occurs. Exercise a matching deprecated alias credential through tenant dispatch and the same refusal path. Preserve the zero wait pin, host allowlist, credential binding, and typed reset field. Document the safe typed retry delay and opt-in helper replay contract.

(cherry picked from commit 6f2901b)

* fix(devin): select tenant host from the account that owns the transmitted key

The consolidated fix bound alias-slot tenant hosts to the transmitted key but
still returned the active literal slot's host for any key. Devin keeps several
accounts per provider id and the request path injects the admitted account's
token, which need not be the active one, while a configured key, a forwarded
bearer, or a test token is not stored at all. Each of those could inherit
another account's EU or FedStart tenant.

resolveDevinApiServer now looks up the stored credential whose access token is
exactly the transmitted key, in the configured provider id first and then its
deprecated alias, active account first. Only that owner's validated host is
used; an owner with an unusable host, an unmatched key, or no key falls back to
the validated configured base URL and then the US default. The lookup uses
getCredential and listAccounts, which store mocks elsewhere in the suite leave
real.

Tests pass the owning key where a stored tenant is expected, so the invalid
alias-host case now reaches the host validator. New cases cover a mismatched
literal slot, an alias owner beside an occupied literal slot, a key neither
slot owns, a missing key, a non-active owning account, and a configured key at
the adapter boundary.

Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com>

---------

Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com>
Co-authored-by: Epinephrine <luvs01@hanmail.net>
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3 participants