feat(auth): add fixed-alias X.509 transport capability - #934
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Castiron custom code✅ No new custom-code files detected. 53 mixed files remain; 0 existing customizations changed. Compared 53 existing customizations unchanged
13 more in the full report. A changed generated baseline means this report cannot reliably identify which handwritten lines changed. Inspect the custom-code diffDownload the exact patch produced by this run (requires repository access): gh run download 32802494142 --repo openai/openai-java \
--name castiron-custom-code-32802494142-1 --dir /tmp/castiron-custom-code-32802494142-1
git apply --stat /tmp/castiron-custom-code-32802494142-1/custom-code.patch
cat /tmp/castiron-custom-code-32802494142-1/custom-code.patchOr reproduce it from an SDK checkout containing the vendored reporter: git fetch --no-tags origin d7ecd271fa2bf0f85ed56e66d009f89b7aecd2a0 fb8b27b78e178fb342c1477229996ba0aad38b96
python3 scripts/castiron/custom_code_report.py report \
--base d7ecd271fa2bf0f85ed56e66d009f89b7aecd2a0 \
--head fb8b27b78e178fb342c1477229996ba0aad38b96 --fetch --require-head-hash --public \
--out /tmp/castiron-custom-code-fb8b27b78e17
cat /tmp/castiron-custom-code-fb8b27b78e17/custom-code.patchThis is the current full custom patch for mixed files, not an attribution of only the handwritten lines changed by this PR. |
This was referenced Aug 25, 2026
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Reviewed the fixed-alias JSSE key manager, peer key-type/issuer selection, TLS context and trust ownership, direct-only isolated OkHttp clients, disabled redirect/retry paths, and partial-construction/close cleanup. The certificate identity and transport boundaries remain consistently constrained; no actionable issues found.
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## Summary - add public sync and async `x509Builder` entry points backed only by caller-attested `X509Transport` - bind isolated exchange and API clients while preserving exact ownership and close behavior - enforce fixed X.509 issuer/API origins, bearer-only route eligibility, and exclusive authentication/provider configuration - validate the final request boundary before exchanging or dispatching credentials - use OkHttp call lifecycle events so client close cancels exchange/API calls through response-body completion ## Security and ownership boundaries - API origin is fixed to `https://mtls.api.openai.com/v1`; the exchange origin remains `https://mtls.auth.openai.com/oauth/token` - no custom base URL, data residency, Azure/Bedrock/provider auth, proxy, arbitrary transport, or organization/project routing can be combined with X.509 mode - user-supplied authorization, API-key, proxy-auth, cookie, host/authority, organization, and project headers are rejected at the final sink - the authenticator owns only the exchange client; `ClientOptions` owns the real API client - no token caching, shared retry budget, 401 rotation, or long-lived lifecycle policy in this slice ## Validation - real loopback CONNECT plus mTLS sync/async Files API coverage verifies SNI, certificate chain, exact exchange body, bearer placement, and header separation - focused construction, Java-visibility, exclusivity, cloning, build isolation, cancellation, blocked exchange/API close, stalled response-body close, and retry-after-close tests - repository lint: passed - repository scripts/build: passed - full Gradle test graph through scripts/test: BUILD SUCCESSFUL, including R8 and ProGuard; the wrapper cleanup trap subsequently observed its mock-server PID had already exited - Castiron custom-code budget: 1610 of 2000 lines, unchanged, 390 lines headroom - two independent review cycles completed and remediated; final Reviewer A and Validator B passes clean - mandatory thermo-nuclear quality review completed, remediated, and rerun clean ## Stack 1. #929 — executable raw-wire oracle (merged) 2. #934 — fixed-alias direct mTLS transport capability 3. #935 — identity metadata and exact token exchange 4. this PR — minimal sync/async client integration with fixed origins and exclusive auth 5. planned — lifecycle, cache, single-flight, retry/deadline, 401 rotation, installed-JAR docs, and protected live E2E Stacked on #935.
jbeckwith-oai
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Aug 26, 2026
## Summary - introduce a single retry/authentication orchestrator for X.509 requests while preserving the ordinary-client retry path unchanged - cache exchanged bearer tokens with expiry skew, single-flight refresh, rejected-generation invalidation, and one bounded 401 replay - propagate request deadlines, cancellation, stream close, and client close through authentication, backoff, transport calls, request bodies, responses, parsing, and logging - preserve exact client/pipeline ownership across sync/async views, reusable builders, generated `Unit` endpoints, and raw-response continuations - add installed-JAR documentation, a runnable example/runtime probe, and a protected opt-in live X.509 smoke workflow ## Compatibility and security boundaries - ordinary non-X.509 construction and retry/completion behavior remains on the pre-existing code path - X.509 remains fixed to the attested transport and fixed auth/API origins introduced by the earlier stack layers - credentials remain bearer-only at the API boundary and are never added to logs, fixtures, examples, or default test output - cleanup helpers act only on internal pipeline-owned markers; ordinary raw-response ownership remains unchanged - public/source compatibility was verified against both baseline and proposed API manifests ## Validation - focused sync/async X.509 lifecycle matrix: passed, including token races, cancellation, deadlines, retries, 401 replay, builder/view ownership, request/response cleanup, logging, parsing, streams, and ordinary-client regressions - repository lint: passed - full `scripts/test` graph with Steady: passed, including R8 and ProGuard artifacts - Java 21 runtime compatibility probe: passed for core, OkHttp, Bedrock, and runtime providers - API/source breaking-change detector: passed for baseline and proposed public APIs - staged secret-pattern scan and `git diff --check`: passed - Castiron custom-code budget: 1668 of 2000 lines, 332 lines headroom; ratchet unchanged - first review cycle: two independent agents clean after all findings were fixed; mandatory thermo-nuclear review clean - second clean-room review cycle: two fresh independent agents clean on the exact frozen 49-file diff (`1e5bba26e91a638915bfa509e87adee10b598c5d92bd23ae54a98a504a4e9fe6`) ## Stack 1. #929 — executable raw-wire oracle (merged) 2. #934 — fixed-alias direct mTLS transport capability 3. #935 — identity metadata and exact token exchange 4. #936 — minimal sync/async client integration with fixed origins and exclusive auth 5. this PR — lifecycle, cache/single-flight, 401 rotation, deadline/cancellation ownership, installed-JAR docs, and protected live E2E Stacked on #936.
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Summary
This is PR 2 of the five-PR X.509 WIF stack and follows #929. It establishes transport ownership and TLS invariants without exposing workload-identity metadata or changing top-level clients.
Security and lifecycle invariants
Non-goals
Validation
Documentation alignment