fix(node): fail pin_git_object when the add response carries no Hash - #453
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A 200 from /api/v0/add without a parseable Hash fell back to the caller-computed raw CID, recording an address the backend never confirmed stored. For payloads above the backend's chunk threshold (262144 bytes on Kubo) that raw CID is not even a stored block, so every later /api/v0/cat on it fails permanently: get_encrypted_blob errors on every fetch and mirrors retry the envelope on every sync. A Hash-less 200 is now an add error carrying a truncated body excerpt. The delaying_endpoint test fixture, which relied on the fallback by returning an empty 200 body, now answers with a conformant NDJSON line.
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ChangesIPFS CID validation
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix · Severity of issue fixed: Medium Suggested reviewers: Merge Risk: ⚪ Minimal · up to The change rejects unconfirmed IPFS pins while preserving valid backend CIDs, with no concrete merge-blocking regression established. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Greptile SummaryThis PR makes IPFS add responses fail when no string-valued
Confidence Score: 4/5The PR should not merge until string-valued add-response hashes are validated as CIDs, preventing malformed backend responses from creating permanently unreadable encrypted-blob records. The hashless-response fallback is correctly removed, but malformed non-empty Hash values still pass through as successful pins and can be persisted without validation. Files Needing Attention: crates/gitlawb-node/src/ipfs_pin.rs
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| Filename | Overview |
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| crates/gitlawb-node/src/ipfs_pin.rs | Tightens /api/v0/add response handling and updates tests, but does not validate that the returned Hash is actually a usable CID. |
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Inline comments:
In `@crates/gitlawb-node/src/ipfs_pin.rs`:
- Line 1543: Update the Hash extraction in the pin_git_object response parsing
to trim the string and reject empty results instead of returning Some("").
Ensure {"Hash":""} propagates the existing error path rather than being treated
as a successful pin, and add a regression test covering that response.
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crates/gitlawb-node/src/ipfs_pin.rs
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beardthelion
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crate:node
Address PR review feedback (Gitlawb#453): a string-valued Hash that does not parse as a CID would be recorded into encrypted_blobs.cid and fail on every later cat, the same failure class as a missing Hash. Validate the returned Hash before accepting it and cover the malformed case with a regression test.
The pin_git_object CID validation rejects non-CID Hash strings, and a dozen test_support fixtures answered 200 with placeholder values like "bafyprovider" or "x". Replace them with a valid CID so the fixtures model a healthy backend; no test asserts on the literal value.
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Summary
A 200 from
/api/v0/addwith no parseableHashno longer counts as a successful pin. The old fallback returned the locally computed raw CID, an address the backend never confirmed stored; above the chunk threshold that CID is not even a stored block, so every latercaton it failed permanently.Motivation & context
pin_git_objecttook the last NDJSON line carrying aHashand fell back toCid::from_git_object_bytes(data)when none did. The add goes out withraw-leaves=true, so on Kubo a payload over 262144 bytes lands chunked under a dag-pb root and the whole-object raw CID is never a stored block. The fabricated CID landed inencrypted_blobs.cid, soget_encrypted_blobfailed on every fetch of an affected envelope and mirrors retried it on each sync.Closes #452
Kind of change
What changed
pin_git_object(gitlawb-node) errors on a 200 add response without a usableHash, carrying a truncated body excerpt. The returnedHashstays authoritative and is not compared against the locally computed raw CID, since above-threshold adds legitimately return the dag-pb root.delaying_endpointtest fixture now returns a conformant NDJSON add response. It had been relying on the fallback by answering 200 with an empty body, so six budget/timing tests were unknowingly passing through the bug.pin_git_object_rejects_a_200_without_a_hash.How a reviewer can verify
DATABASE_URL=postgresql://gitlawb:changeme@localhost:5432/gitlawb \ cargo test -p gitlawb-node --bin gitlawb-node ipfs_pinThe new test fails on main:
pin_git_objectreturnsOk(<fabricated CID>)for a 200 carrying{"Name":"object","Size":"19"}. Against live Kubo v0.43.0, a 262145-byte add returns the dag-pb root asHashwhile the whole-object raw CID 500s oncat, which is the failure mode the fallback hid.Before you request review
cargo test -p gitlawb-nodepasses locally (the workspace suite runs in CI via pr-checks.yml)cargo fmt --allandcargo clippy --workspace --all-targets -- -D warningsare cleanfeat(...),fix(...),docs(...)).env.exampleupdated if behavior or config changed (or N/A)Notes for reviewers
Open PRs touching
ipfs_pin.rs(#382, #407, #408) all modify the pin-set selection and read-bounding paths, not the add-response parser, so no semantic overlap. If #452's direction is wrong and a Hash-less 200 is meant to be a supported shape, this should instead pin down what the parser is allowed to accept.Summary by CodeRabbit