feat: reject cross-host redirects and HTTPS→HTTP downgrades (#95) #111

Merged
aweiker merged 2 commits from review-bot-issue-95 into main 2026-05-13 16:58:49 +00:00

2 Commits

Author SHA1 Message Date
claw 7de6fdd9ec fix: address review feedback on redirect policy
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- Replace Unicode arrows (→) with ASCII (->) in error messages and
  comments for log compatibility (gpt-review NITs #19626, #19628)
- Improve guard comment to clarify it exists for testability, not
  runtime safety (sonnet-review NIT #19619)
- Add cross-reference comments noting intentional duplication between
  gitea/client.go and github/client.go (sonnet-review #19618,
  gpt-review #19625, #19627)

Pushed back on:
- internal/ package for dedup: structural overhead not warranted for
  a single ~25-line function
- strings.EqualFold for scheme: Go's url.Parse normalizes schemes to
  lowercase, making case-insensitive comparison unnecessary
2026-05-13 09:28:46 -07:00
claw 1e0959b077 feat: reject cross-host redirects and HTTPS→HTTP downgrades (#95)
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Add defaultCheckRedirect to both GitHub and Gitea clients that rejects:
- HTTPS→HTTP protocol downgrades (prevents plaintext leakage)
- Cross-host redirects entirely (prevents consuming untrusted responses)

Same-host, same-or-upgraded-scheme redirects remain allowed.

Both NewClient constructors wire the policy, and SetHTTPClient(nil)
restores it. Callers providing a non-nil client are responsible for
configuring their own safe redirect policy.

Closes #95
2026-05-13 08:51:36 -07:00