[schickling-assistant]

Summary

4d-3e-5 ports oracle project (566-605): plain-path Git trees, complete-component exclusions, deduplicated resolved selectors named PATH::SELECTOR, empty projection None and the whole-tree fast path. Reuses the strict ls-tree parser and hardened gate command. Preserves raw path bytes, symlink/executable/gitlink modes and index-only synthetic selected blobs (hash-object without -w; write-tree --missing-ok).
GIT_INDEX_FILE is an owned temporary index set after sanitization. The narrow stdin plumbing has only bounded-stdout Git callers, suppresses candidate-controlled stderr, and kills/reaps on stdin failure. No timeout is claimed; the existing gate-wide timeout/output gaps remain listed. Native tree hashing and CLI wiring are unchanged.
First hardening change closes Janitor #113 P3: selected_content requires a full lowercase tree OID before any Git read and passes --end-of-options to ls-tree. This moved here because rustfmt's expanded argument list exceeds 3e-4's remaining three lines; 3e-4 stays unchanged. Invalid revisions return structured error. Static/clippy-style review confirms the guard precedes both reads, all new bindings/imports are used, and existing differential assertions are unchanged. No new refusal fixture fits within the cap.

Differential coverage

63 real-Git combinations (21 path sets at three trees), with raw FF/tab/newline names, executable/symlink/gitlink modes, overlapping plain paths, component exclusions including trailing slashes, missing/empty/full trees, unresolved selectors with '.', selected-entry deduplication across layouts, unrelated JSON changes, and preferred layout. All expected keys/reasons come from the unchanged pinned oracle.

Proof

Direct rustfmt ran locally; static review covered raw-name ownership, exclusion slash handling, parser reuse, process stdin closure/error reaping, intentional index environment after sanitization, fixture mode/staging/gitlink preservation and imports. Python-only real-Git probes confirmed empty None, whole-tree identity (including unresolved selector), trailing-slash exclusions and resolved-selector deduplication. No Cargo, clippy, builds or flake checks ran locally. Hosted x86_64/arm checks must verify.

Size / sequence

280 changed lines (276 additions, 4 deletions): projection 117, tests 139, selected-content hardening 14/3, parser visibility 1/1, registration 1, docs 4. Predecessor 3e-4 selected-content/layout. This closes the input projection helper tranche; loading and evaluator/CLI wiring remain later approved-series work.

Posted on behalf of @schickling

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[schickling-assistant]

q19-go v1 head=5e68f970486ba66df19e4a03c9e5819b1b248e7a verdict=GO

CI Manager SOURCE GO, after an independent exact-head review with no findings. Janitor P3 from #113 is closed: selected_content accepts only 40 or 64 lowercase hex characters before any git read and passes --end-of-options. The owned temporary GIT_INDEX_FILE is set after sanitization and is cleaned up through RAII. Synthetic blobs are hashed without -w before write-tree --missing-ok. The differential test builds real git objects: 21 path sets x 3 trees = 63 combinations against the pinned Python oracle. This is a source verdict only: no build or test was run here, and the CI result is separate.

Posted on behalf of @schickling

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[schickling-assistant]

U04 exposure audit: PASS at exact head 5e68f970486ba66df19e4a03c9e5819b1b248e7a (4d-3e-5: legacy Git input projection).

• CI 42723933334 succeeded (pull_request, PR list contains Port legacy Git input projection (4d-3e-5) #114). checks and publisher-stack passed on ubuntu-24.04 and ubuntu-24.04-arm. Release 42723933527 succeeded.
• Hosted test evidence (checks (ubuntu-24.04)):
  • test evidence::legacy_verify::projection::tests::projection_matches_oracle_for_raw_modes_layout_and_selectors ... ok (3 real Git trees x 21 path combinations against the pinned oracle)
  • test evidence::legacy_verify::selection::tests::content_and_layout_match_oracle_at_each_tree ... ok
• All 5 commits are verified. The LICENSE equals main. A merge-tree against main 3b9a199165de402263de28de2d3d72b67e13b405 is clean.
• Source review:
  • The Port legacy selected input content with bounded blob read (4d-3e-4) #113 P3 is closed. selected_content_limit validates tree with crate::evidence::oid (40 or 64 lowercase hex characters) before any Git call. ls-tree now gets --end-of-options before the tree and -- before the path.
  • The temporary index is tempfile::tempdir()/index, a private, uniquely created directory that is removed when it is dropped. GIT_INDEX_FILE is set after command(repo) sanitizes the ambient GIT_*, LD_* and DYLD_* variables, so no caller Git environment leaks in. No user index is touched.
  • Synthetic selected-content blobs stay index-only. write-tree writes the projected tree objects to the repository, as the oracle does.
  • No CLI, admission or trust wiring is added.
• P3 (unwired): crates/mergemaster-evidence/src/evidence/legacy_verify/projection.rs:68 passes tree to ls-tree -r without OID validation or --end-of-options. The whole-tree fast path (lines 63-65) returns the supplied tree text unchecked, as the oracle does. A future production caller must supply a verified full tree OID.
• P3 (open gap already recorded): input_git (projection.rs:17-40) captures output with wait_with_output and no byte limit. The recursive ls-tree and the aggregate index size are not bounded. lane-git-output-bounds and the timeout item in PROVENANCE still cover this.

Signed: Janitor (agent/dotfiles/janitor).

Posted on behalf of @schickling

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