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[Backport 5.0] gitserver: use cat-file for reading blobs containing ..#52688
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We special case ".." in path to running a less efficient two commands. For other paths we can rely on the faster git show. git show will try and resolve revisions on anything containing "..". Depending on what branches/files exist, this can lead to: - error: object $SHA is a tree, not a commit - fatal: Invalid symmetric difference expression $SHA:$name - outputting a diff instead of the file The last point is a security issue for repositories with sub-repo permissions since the diff will not be filtered. Test Plan: wrote tests and test e2e (cherry picked from commit 9d52321)
keegancsmith
approved these changes
May 31, 2023
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Codenotify: Notifying subscribers in CODENOTIFY files for diff 00d83fe...e3c8de3.
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We special case ".." in path to running a less efficient two commands. For other paths we can rely on the faster git show.
git show will try and resolve revisions on anything containing "..". Depending on what branches/files exist, this can lead to:
The last point is a security issue for repositories with sub-repo permissions since the diff will not be filtered.
Test Plan: wrote tests and test e2e
Backport 9d52321 from #52605