Add a new function `ostree_repo_static_delta_execute_offline_with_signature`
which takes a signature engine to verify the delta before applying it.
The `ostree_repo_static_delta_execute_offline` is just a wrapper to this
new function, passing a NULL signature engine.
When this function is called without signature engine, but with a sign
delta, it will only fails if `sign-verify-deltas` is set to true in repo
core options.
This commits move signature existence check and delta signature
verification to share common parts between existing APIs and the new
function.
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
This checks if the static delta file is signed or not to be able to
correctly get the superblock to dump.
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
This checks if the static delta file is signed or not to be able to
correctly get the superblock to apply.
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
Add new "static-delta verify" sub-command.
This supports multiple keys to verify the static-delta file.
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
This retrieves the signatures and pass the static delta block as an array
of bytes to ostree_sign_data_verify().
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
While the commits contained in the single static-delta file are signed so
we can check them and operate on trusted data, the superblock isn't signed
in any way, so it end up operating on untrusted data to:
1. actually find where the trusted data is, and
2. check whether the update is fit for the current device by looking at
the collection id stored in the metadata
This commit generates signatures of all static data, and concatenate them
to the existing static delta format, i.e. as a GVariant layout `a{sv}ay`
where
- a{sv}: signatures
- ay: existing delta variant
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
The "new style" code generally avoids `goto err` because it conflicts
with `__attribute__((cleanup))`. This fixes a compiler warning.
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
Frédéric Danis