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package ref
import (
"errors"
"fmt"
"io"
"strings"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/catfile"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/gitpipe"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service"
"gitlab.com/gitlab-org/gitaly/v15/internal/helper/chunk"
"gitlab.com/gitlab-org/gitaly/v15/internal/structerr"
"gitlab.com/gitlab-org/gitaly/v15/proto/go/gitalypb"
"google.golang.org/protobuf/proto"
)
func verifyGetTagSignaturesRequest(req *gitalypb.GetTagSignaturesRequest) error {
if err := service.ValidateRepository(req.GetRepository()); err != nil {
return err
}
if len(req.GetTagRevisions()) == 0 {
return errors.New("missing revisions")
}
for _, revision := range req.GetTagRevisions() {
if strings.HasPrefix(revision, "-") && revision != "--all" && revision != "--not" {
return fmt.Errorf("invalid revision: %q", revision)
}
}
return nil
}
func (s *server) GetTagSignatures(req *gitalypb.GetTagSignaturesRequest, stream gitalypb.RefService_GetTagSignaturesServer) error {
if err := verifyGetTagSignaturesRequest(req); err != nil {
return structerr.NewInvalidArgument("%w", err)
}
ctx := stream.Context()
repo := s.localrepo(req.GetRepository())
objectReader, cancel, err := s.catfileCache.ObjectReader(ctx, repo)
if err != nil {
return structerr.NewInternal("creating object reader: %w", err)
}
defer cancel()
chunker := chunk.New(&tagSignatureSender{
send: func(signatures []*gitalypb.GetTagSignaturesResponse_TagSignature) error {
return stream.Send(&gitalypb.GetTagSignaturesResponse{
Signatures: signatures,
})
},
})
revlistOptions := []gitpipe.RevlistOption{
gitpipe.WithObjects(),
gitpipe.WithObjectTypeFilter(gitpipe.ObjectTypeTag),
}
revlistIter := gitpipe.Revlist(ctx, repo, req.GetTagRevisions(), revlistOptions...)
catfileObjectIter, err := gitpipe.CatfileObject(ctx, objectReader, revlistIter)
if err != nil {
return structerr.NewInternal("creating cat-file object iterator: %w", err)
}
for catfileObjectIter.Next() {
tag := catfileObjectIter.Result()
raw, err := io.ReadAll(tag)
if err != nil {
return structerr.NewInternal("reading tag: %w", err)
}
signatureKey, tagText := catfile.ExtractTagSignature(raw)
if err := chunker.Send(&gitalypb.GetTagSignaturesResponse_TagSignature{
TagId: tag.ObjectID().String(),
Signature: signatureKey,
Content: tagText,
}); err != nil {
return structerr.NewInternal("sending tag signature chunk: %w", err)
}
}
if err := catfileObjectIter.Err(); err != nil {
return structerr.NewInternal("cat-file iterator stop: %w", err)
}
if err := chunker.Flush(); err != nil {
return structerr.NewInternal("flushing chunker: %w", err)
}
return nil
}
type tagSignatureSender struct {
signatures []*gitalypb.GetTagSignaturesResponse_TagSignature
send func([]*gitalypb.GetTagSignaturesResponse_TagSignature) error
}
func (t *tagSignatureSender) Reset() {
t.signatures = t.signatures[:0]
}
func (t *tagSignatureSender) Append(m proto.Message) {
t.signatures = append(t.signatures, m.(*gitalypb.GetTagSignaturesResponse_TagSignature))
}
func (t *tagSignatureSender) Send() error {
return t.send(t.signatures)
}
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