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attest.go
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attest.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 (
"fmt"
"github.com/spf13/cobra"
"github.com/sigstore/cosign/v2/cmd/cosign/cli/attest"
"github.com/sigstore/cosign/v2/cmd/cosign/cli/generate"
"github.com/sigstore/cosign/v2/cmd/cosign/cli/options"
)
func Attest() *cobra.Command {
o := &options.AttestOptions{}
cmd := &cobra.Command{
Use: "attest",
Short: "Attest the supplied container image.",
Example: ` cosign attest --key <key path>|<kms uri> [--predicate <path>] [--a key=value] [--no-upload=true|false] [--f] [--r] <image uri>
# attach an attestation to a container image Google sign-in
cosign attest --timeout 90s --predicate <FILE> --type <TYPE> <IMAGE>
# attach an attestation to a container image with a local key pair file
cosign attest --predicate <FILE> --type <TYPE> --key cosign.key <IMAGE>
# attach an attestation to a container image with a key pair stored in Azure Key Vault
cosign attest --predicate <FILE> --type <TYPE> --key azurekms://[VAULT_NAME][VAULT_URI]/[KEY] <IMAGE>
# attach an attestation to a container image with a key pair stored in AWS KMS
cosign attest --predicate <FILE> --type <TYPE> --key awskms://[ENDPOINT]/[ID/ALIAS/ARN] <IMAGE>
# attach an attestation to a container image with a key pair stored in Google Cloud KMS
cosign attest --predicate <FILE> --type <TYPE> --key gcpkms://projects/[PROJECT]/locations/global/keyRings/[KEYRING]/cryptoKeys/[KEY]/versions/[VERSION] <IMAGE>
# attach an attestation to a container image with a key pair stored in Hashicorp Vault
cosign attest --predicate <FILE> --type <TYPE> --key hashivault://[KEY] <IMAGE>
# attach an attestation to a container image with a local key pair file, including a certificate and certificate chain
cosign attest --predicate <FILE> --type <TYPE> --key cosign.key --cert cosign.crt --cert-chain chain.crt <IMAGE>
# attach an attestation to a container image which does not fully support OCI media types
COSIGN_DOCKER_MEDIA_TYPES=1 cosign attest --predicate <FILE> --type <TYPE> --key cosign.key legacy-registry.example.com/my/image
# supply attestation via stdin
echo <PAYLOAD> | cosign attest --predicate - <IMAGE>`,
Args: cobra.MinimumNArgs(1),
PersistentPreRun: options.BindViper,
RunE: func(cmd *cobra.Command, args []string) error {
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,
FulcioAuthFlow: o.Fulcio.AuthFlow,
InsecureSkipFulcioVerify: o.Fulcio.InsecureSkipFulcioVerify,
RekorURL: o.Rekor.URL,
OIDCIssuer: o.OIDC.Issuer,
OIDCClientID: o.OIDC.ClientID,
OIDCClientSecret: oidcClientSecret,
OIDCRedirectURL: o.OIDC.RedirectURL,
OIDCProvider: o.OIDC.Provider,
SkipConfirmation: o.SkipConfirmation,
TSAServerURL: o.TSAServerURL,
}
attestCommand := attest.AttestCommand{
KeyOpts: ko,
RegistryOptions: o.Registry,
CertPath: o.Cert,
CertChainPath: o.CertChain,
NoUpload: o.NoUpload,
PredicatePath: o.Predicate.Path,
PredicateType: o.Predicate.Type,
Replace: o.Replace,
Timeout: ro.Timeout,
TlogUpload: o.TlogUpload,
RekorEntryType: o.RekorEntryType,
}
for _, img := range args {
if err := attestCommand.Exec(cmd.Context(), img); err != nil {
return fmt.Errorf("signing %s: %w", img, err)
}
}
return nil
},
}
o.AddFlags(cmd)
return cmd
}