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lib/tar: Pre-filter tar archive in Rust #112

Merged
merged 1 commit into from
Oct 5, 2021
Merged

lib/tar: Pre-filter tar archive in Rust #112

merged 1 commit into from
Oct 5, 2021

Commits on Oct 4, 2021

  1. lib/tar: Pre-filter tar archive in Rust 

    Rather than trying to extend the ostree C code to support
arbitrary transformations, let's do pre-parsing here in safe Rust.

We keep the `/etc` → `/usr/etc` bits, but we also just completely
drop everything not in `/usr` now.

As noted in the comment, this pre-validation will hopefully also
catch any corrupt tarballs that might be exploitable in the C libarchive
codebase.
    @cgwalters
    cgwalters committed Oct 4, 2021
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