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package common
import (
"fmt"
"github.com/containers/image/v5/pkg/cli"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/containers/podman/v4/pkg/terminal"
)
// PrepareSigningPassphrase updates pushOpts.SignPassphrase and SignSigstorePrivateKeyPassphrase based on a --sign-passphrase-file value signPassphraseFile,
// and validates pushOpts.Sign* consistency.
// It may interactively prompt for a passphrase if one is required and wasn’t provided otherwise.
func PrepareSigningPassphrase(pushOpts *entities.ImagePushOptions, signPassphraseFile string) error {
// c/common/libimage.Image does allow creating both simple signing and sigstore signatures simultaneously,
// with independent passphrases, but that would make the CLI probably too confusing.
// For now, use the passphrase with either, but only one of them.
if signPassphraseFile != "" && pushOpts.SignBy != "" && pushOpts.SignBySigstorePrivateKeyFile != "" {
return fmt.Errorf("only one of --sign-by and sign-by-sigstore-private-key can be used with --sign-passphrase-file")
}
var passphrase string
if signPassphraseFile != "" {
p, err := cli.ReadPassphraseFile(signPassphraseFile)
if err != nil {
return err
}
passphrase = p
} else if pushOpts.SignBySigstorePrivateKeyFile != "" {
p := terminal.ReadPassphrase()
passphrase = string(p)
} // pushOpts.SignBy triggers a GPG-agent passphrase prompt, possibly using a more secure channel, so we usually shouldn’t prompt ourselves if no passphrase was explicitly provided.
pushOpts.SignPassphrase = passphrase
pushOpts.SignSigstorePrivateKeyPassphrase = []byte(passphrase)
return nil
}
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