fix(cluster): bind mTLS node identity - #225
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📝 WalkthroughWalkthroughThe TLS identity path now accepts only exact node identity values from parsed certificates. Raw DER byte scanning was removed. Tests verify rejection of unparsed bytes and embedded markers. ChangesTLS identity parsing
Priority: ⬇️ Low Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix Merge Risk: 🟡 Moderate · up to A peer can be authenticated as an identity from its issuing certificate rather than its own leaf certificate. Restrict identity extraction to the leaf certificate before merging. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
In `@src/cluster/security.rs`:
- Line 215: Update node_id_from_peer_certs to inspect only certs.first() rather
than scanning the complete peer_certificates() chain in control and media paths,
preserving identity extraction from the validated leaf only. Add a regression
test covering an identity-free leaf with an identity-bearing issuer and verify
the issuer identity is not selected.
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src/cluster/security.rstests/cluster_security.rs
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| let digits = value.strip_prefix(marker)?; | ||
| if digits.is_empty() || digits.len() > 20 || !digits.bytes().all(|b| b.is_ascii_digit()) { |
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This now accepts only an exact lrtmp2-node-{id} CN/DNS SAN/URI SAN value, but docs/clustering.md still tells operators that the server scans certificate DER for the marker. Consequently, an existing certificate whose CN or SAN merely contains the marker (for example, node-lrtmp2-node-42) was accepted before this change but will make every control and media authentication fail after an upgrade. Update the deployment documentation and migration guidance to require the exact identity value.
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Summary\n- bind cluster node IDs only to parsed certificate CN/SAN identity fields\n- reject raw certificate-byte markers and non-exact identities\n- add regression coverage for both rejection paths\n\n## Verification\n- cargo fmt --check\n- git diff --check\n- targeted cargo test could not run because this environment cannot resolve the locked crates.io dependency version
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