Render parsed source identifiers back to their canonical SourceOp form before
source policy evaluation. This lets Git subdir cleanup use the existing source
parser and avoids policy-specific Git parsing.
Add String methods for source identifiers and cover them with unit tests, plus
a client integration regression for canonical Git subdir policy matching.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Support importing git sources from OCI or registry-backed bundle blobs
and exporting resolved checkouts as single-file git bundles.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Move safeFileName from source/http to source/util/pathutil
and apply it to the containerblob source as well. Harden
containerblob/pull.go to use os.OpenRoot for file writes,
preventing path traversal via crafted filenames.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
(cherry picked from commit 3d6e587655d72c343f6fdc7268480a900ba45b0c)
Image blob source in LLB allows addressing a single blob
from a container image registry. The difference from the image
source is that image source needs to point to a manifest that
internally points to an array of layer blobs that are all extracted
on top of each other to form a root FS. Contrary, image blob
points to a single blob that is not extracted but downloaded
as a single file into an empty snapshot, similarily how
the HTTP source works.
The main use case for this source is to pin snapshots of
HTTP URLs, upload the downloaded blob into container registry,
and then use a source policy to map a HTTP URL (whose content
might be changed) to the copy of the source as image blob
to ensure immutability.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
