58 lines
2.1 KiB
Markdown
58 lines
2.1 KiB
Markdown
---
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id: fix/normalize-host-ipv6
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name: Fix normalize_host to handle IPv6 bracket notation
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status: completed
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depends_on: []
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scope: single
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risk: low
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impact: isolated
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level: implementation
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review_findings: [S3]
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---
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## Description
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`normalize_host` in `src/config/dynamic_config.rs` uses `split(':').next()` to strip ports, but this fails for IPv6 addresses in brackets (e.g., `[::1]:443` would normalize to `[::1]` instead of `::1`). The `strip_port_from_host` function in `src/tls/redirect.rs` correctly handles this case.
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### Changes Required
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**`src/config/dynamic_config.rs`**:
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- Replace the `normalize_host` implementation with a port-stripping function that handles IPv6 bracket notation
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- Either extract a shared utility function from `strip_port_from_host` in `redirect.rs`, or make `normalize_host` use the same logic
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- The function should:
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- If host starts with `[`, find the closing `]` and strip the port after it
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- Otherwise, use the existing `split(':').next()` logic
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- Convert to lowercase
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**`src/tls/redirect.rs`**:
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- Consider extracting `strip_port_from_host` into a shared module (e.g., `src/utils.rs` or inline in both places) to avoid code duplication
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### Tests
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- Add test cases for `normalize_host` with IPv6:
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- `[::1]:443` → `::1` (or `[::1]` depending on convention — check what the routing table expects)
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- `[2001:db8::1]:8080` → `2001:db8::1`
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- Plain hostname with port: `example.com:443` → `example.com`
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- Plain hostname without port: `example.com` → `example.com`
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## Acceptance Criteria
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- [ ] `normalize_host` correctly strips ports from IPv6 bracket notation
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- [ ] Either a shared utility function is extracted, or both implementations use the same logic
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- [ ] New test cases for IPv6 host normalization
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- [ ] Existing routing tests pass
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- [ ] `cargo clippy` passes with no warnings
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## References
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- docs/reviews/002-implementation-review.md — S3 finding
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- src/config/dynamic_config.rs — `normalize_host` function
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- src/tls/redirect.rs — `strip_port_from_host` function (correct implementation)
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## Notes
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> To be filled by implementation agent
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## Summary
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> To be filled on completion |