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Cache bottle attestations #18581

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Cache bottle attestations #18581

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carlocab
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  • Have you followed the guidelines in our Contributing document?
  • Have you checked to ensure there aren't other open Pull Requests for the same change?
  • Have you added an explanation of what your changes do and why you'd like us to include them?
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This will help limit the number of times we need to query GitHub for the
attestation in CI.

This will help limit the number of times we need to query GitHub for the
attestation in CI.
@carlocab carlocab requested a review from woodruffw October 16, 2024 13:59
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@MikeMcQuaid MikeMcQuaid left a comment

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Makes sense to me! Does make me wonder whether this caching could/should be in Homebrew/brew, though?

@carlocab
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Does make me wonder whether this caching could/should be in Homebrew/brew, though?

That's where we're making this change!

@MikeMcQuaid
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That's where we're making this change!

I cannot read today 🙈 apologies!

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@MikeMcQuaid MikeMcQuaid left a comment

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Confirmed this still looks good now I know what repository I'm in today 🙃


sig { params(pathname: Pathname, scrub: T::Boolean).returns(T::Boolean) }
def stale_attestation?(pathname, scrub)
scrub || prune?(pathname, ATTESTATION_CLEANUP_DAYS)
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Might be nice if this could be cleaned up based on the state of the cached bottles? Not a blocker, very much nice-to-have.


if cached_attestation.exist?
begin
return JSON.parse(cached_attestation.read)
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Just to make sure I understand: the intended behavior here is to treat a cached attestation as implicitly previously verified, right?

I think we could go two ways with this: either assume cached == verified (which in turn means an attacker who can modify the cache/insert a dummy cache member can bypass verification, although such an attacker is already pretty powerful), or perform verification again on the cached attestation (so skip the download, but do the rest of the gh attestation verify).

The first seems fine to me, but the second is perhaps preferable.

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The first seems fine to me, but the second is perhaps preferable.

Agreed 👍🏻

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github-actions bot commented Nov 8, 2024

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

@github-actions github-actions bot added the stale No recent activity label Nov 8, 2024
@woodruffw woodruffw added in progress Maintainers are working on this and removed stale No recent activity labels Nov 12, 2024
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3 participants