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sign.go
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sign.go
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//
// Copyright 2021 The Sigstore Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cli
import (
"flag"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/sigstore/cosign/cmd/cosign/cli/generate"
"github.com/sigstore/cosign/cmd/cosign/cli/options"
"github.com/sigstore/cosign/cmd/cosign/cli/sign"
)
func Sign() *cobra.Command {
o := &options.SignOptions{}
cmd := &cobra.Command{
Use: "sign",
Short: "Sign the supplied container image.",
Long: "Sign the supplied container image.",
Example: ` cosign sign --key <key path>|<kms uri> [--payload <path>] [-a key=value] [--upload=true|false] [-f] [-r] <image uri>
# sign a container image with Google sign-in (experimental)
COSIGN_EXPERIMENTAL=1 cosign sign <IMAGE>
# sign a container image with a local key pair file
cosign sign --key cosign.key <IMAGE>
# sign a multi-arch container image AND all referenced, discrete images
cosign sign --key cosign.key --recursive <MULTI-ARCH IMAGE>
# sign a container image and add annotations
cosign sign --key cosign.key -a key1=value1 -a key2=value2 <IMAGE>
# sign a container image with a key stored in an environment variable
cosign sign --key env://[ENV_VAR] <IMAGE>
# sign a container image with a key pair stored in Azure Key Vault
cosign sign --key azurekms://[VAULT_NAME][VAULT_URI]/[KEY] <IMAGE>
# sign a container image with a key pair stored in AWS KMS
cosign sign --key awskms://[ENDPOINT]/[ID/ALIAS/ARN] <IMAGE>
# sign a container image with a key pair stored in Google Cloud KMS
cosign sign --key gcpkms://projects/[PROJECT]/locations/global/keyRings/[KEYRING]/cryptoKeys/[KEY]/versions/[VERSION] <IMAGE>
# sign a container image with a key pair stored in Hashicorp Vault
cosign sign --key hashivault://[KEY] <IMAGE>
# sign a container image with a key pair stored in a Kubernetes secret
cosign sign --key k8s://[NAMESPACE]/[KEY] <IMAGE>
# sign a container image with a key, attaching a certificate and certificate chain
cosign sign --key cosign.key --cert cosign.crt --cert-chain chain.crt <IMAGE>
# sign a container in a registry which does not fully support OCI media types
COSIGN_DOCKER_MEDIA_TYPES=1 cosign sign --key cosign.key legacy-registry.example.com/my/image`,
Args: cobra.MinimumNArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
switch o.Attachment {
case "sbom", "":
break
default:
return flag.ErrHelp
}
oidcClientSecret, err := o.OIDC.ClientSecret()
if err != nil {
return err
}
ko := options.KeyOpts{
KeyRef: o.Key,
PassFunc: generate.GetPass,
Sk: o.SecurityKey.Use,
Slot: o.SecurityKey.Slot,
FulcioURL: o.Fulcio.URL,
IDToken: o.Fulcio.IdentityToken,
InsecureSkipFulcioVerify: o.Fulcio.InsecureSkipFulcioVerify,
RekorURL: o.Rekor.URL,
OIDCIssuer: o.OIDC.Issuer,
OIDCClientID: o.OIDC.ClientID,
OIDCClientSecret: oidcClientSecret,
OIDCRedirectURL: o.OIDC.RedirectURL,
OIDCDisableProviders: o.OIDC.DisableAmbientProviders,
}
annotationsMap, err := o.AnnotationsMap()
if err != nil {
return err
}
if err := sign.SignCmd(ro, ko, o.Registry, annotationsMap.Annotations, args, o.Cert, o.CertChain, o.Upload,
o.OutputSignature, o.OutputCertificate, o.PayloadPath, o.Force, o.Recursive, o.Attachment); err != nil {
if o.Attachment == "" {
return errors.Wrapf(err, "signing %v", args)
}
return errors.Wrapf(err, "signing attachment %s for image %v", o.Attachment, args)
}
return nil
},
}
o.AddFlags(cmd)
return cmd
}