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From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug debuginfod/27758] security idea: DEBUGINFOD_VERIFY mode
Date: Wed, 21 Apr 2021 14:09:30 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27758

--- Comment #5 from Frank Ch. Eigler <fche at redhat dot com> ---
(In reply to Vitaly Chikunov from comment #3)
> Instead of `X-Debuginfod-Hash` you can use `ETag` where you can put anyth=
ing
> including sha256 (can be prescribed in webapi description), then GET requ=
est
> with `If-None-Match` + tag value (which is a hash) will return just 304 if
> the hash is not changed. So HEAD request is not needed too.

That's a good idea, except in the case of an older [current] debuginfod that
doesn't understand If-None-Match, and would just resend the entire content
every time.  But at least it's not a security problem, just a performance o=
ne.

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