1 // 2 // Copyright 2021 The Sigstore Authors. 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 16 package signed 17 18 import ( 19 "errors" 20 21 v1 "github.com/google/go-containerregistry/pkg/v1" 22 23 "github.com/sigstore/cosign/v2/pkg/oci" 24 "github.com/sigstore/cosign/v2/pkg/oci/empty" 25 ) 26 27 // Image returns an oci.SignedImage form of the v1.Image with no signatures. 28 func Image(i v1.Image) oci.SignedImage { 29 return &image{ 30 Image: i, 31 } 32 } 33 34 type image struct { 35 v1.Image 36 } 37 38 var _ oci.SignedImage = (*image)(nil) 39 40 // Signatures implements oci.SignedImage 41 func (*image) Signatures() (oci.Signatures, error) { 42 return empty.Signatures(), nil 43 } 44 45 // Attestations implements oci.SignedImage 46 func (*image) Attestations() (oci.Signatures, error) { 47 return empty.Signatures(), nil 48 } 49 50 // Attestations implements oci.SignedImage 51 func (*image) Attachment(name string) (oci.File, error) { //nolint: revive 52 return nil, errors.New("unimplemented") 53 } 54