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Add signature support for the RPM module (#4780)

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This pull request comes from https://github.com/go-gitea/gitea/pull/27069.

If the rpm package does not contain a matching gpg signature, the installation will fail. See ([gitea/gitea#27031](https://github.com/go-gitea/gitea/issues/27031)) , now auto-signing all new rpm uploads.

This option is turned off by default for compatibility.

<!--start release-notes-assistant-->

## Draft release notes
<!--URL:https://codeberg.org/forgejo/forgejo-->
- Features
  - [PR](https://codeberg.org/forgejo/forgejo/pulls/4780): <!--number 4780 --><!--line 0 --><!--description QWRkIHNpZ25hdHVyZSBzdXBwb3J0IGZvciB0aGUgUlBNIG1vZHVsZQ==-->Add signature support for the RPM module<!--description-->
<!--end release-notes-assistant-->

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4780
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Exploding Dragon <explodingfkl@gmail.com>
Co-committed-by: Exploding Dragon <explodingfkl@gmail.com>
This commit is contained in:
Exploding Dragon 2024-08-02 05:56:57 +00:00 • committed by Earl Warren
parent 35ea74576e
commit 471265c4e0
7 changed files with 107 additions and 40 deletions
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32
services/packages/rpm/repository.go
View file

@ -21,6 +21,7 @@ import (
rpm_model "code.gitea.io/gitea/models/packages/rpm"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
packages_module "code.gitea.io/gitea/modules/packages"
rpm_module "code.gitea.io/gitea/modules/packages/rpm"
"code.gitea.io/gitea/modules/util"
@ -29,6 +30,7 @@ import (
"github.com/ProtonMail/go-crypto/openpgp"
"github.com/ProtonMail/go-crypto/openpgp/armor"
"github.com/ProtonMail/go-crypto/openpgp/packet"
"github.com/sassoftware/go-rpmutils"
)
// GetOrCreateRepositoryVersion gets or creates the internal repository package
@ -641,3 +643,33 @@ func addDataAsFileToRepo(ctx context.Context, pv *packages_model.PackageVersion,
OpenSize: wc.Written(),
}, nil
}
func NewSignedRPMBuffer(rpm *packages_module.HashedBuffer, privateKey string) (*packages_module.HashedBuffer, error) {
keyring, err := openpgp.ReadArmoredKeyRing(bytes.NewReader([]byte(privateKey)))
if err != nil {
// failed to parse key
return nil, err
}
entity := keyring[0]
h, err := rpmutils.SignRpmStream(rpm, entity.PrivateKey, nil)
if err != nil {
// error signing rpm
return nil, err
}
signBlob, err := h.DumpSignatureHeader(false)
if err != nil {
// error writing sig header
return nil, err
}
if len(signBlob)%8 != 0 {
log.Info("incorrect padding: got %d bytes, expected a multiple of 8", len(signBlob))
return nil, err
}
// move fp to sign end
if _, err := rpm.Seek(int64(h.OriginalSignatureHeaderSize()), io.SeekStart); err != nil {
return nil, err
}
// create signed rpm buf
return packages_module.CreateHashedBufferFromReader(io.MultiReader(bytes.NewReader(signBlob), rpm))
}