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fix(asymkey): do not verify OpenPGP signatures with an SSH instance key, require git 2.18 (#39073)

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With SIGNING_FORMAT = ssh the OpenPGP verification path builds its
GPGSettings from the instance signing key but leaves the format empty,
so it runs `gpg -a --export` on an SSH public key path. Depending on the
local gpg setup that either exports nothing, so an OpenPGP signed commit
reports gpg.error.generate_hash instead of a missing key, or it fails
outright and logs an export error for every such commit.

Both guards are needed. The first covers SIGNING_KEY set to a path with
SIGNING_FORMAT=ssh; the second covers the shipped default
SIGNING_KEY=default, where the format comes from git's own gpg.format
and never gets reconciled with the hardcoded "openpgp". Drop either one
and a working config goes back to broken.

Also raise minimum git version to 2.18 which was already required before this change.

Fixes: https://github.com/go-gitea/gitea/issues/37452
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
Artem Lytkin
2026-08-25 15:02:31 +03:00
committed by GitHub
parent d17ccd4434
commit c8660364d9
9 changed files with 184 additions and 181 deletions
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modules/git/config.go
+10 -10
View File
@@ -42,16 +42,16 @@ func syncGitConfig(ctx context.Context) (err error) {
return err
}
if DefaultFeatures().CheckVersionAtLeast("2.18") {
if err := configSet(ctx, "core.commitGraph", "true"); err != nil {
return err
}
if err := configSet(ctx, "gc.writeCommitGraph", "true"); err != nil {
return err
}
if err := configSet(ctx, "fetch.writeCommitGraph", "true"); err != nil {
return err
}
if err := configSet(ctx, "core.commitGraph", "true"); err != nil {
return err
}
if err := configSet(ctx, "gc.writeCommitGraph", "true"); err != nil {
return err
}
if err := configSet(ctx, "fetch.writeCommitGraph", "true"); err != nil {
return err
}
if DefaultFeatures().SupportProcReceive {