835 - Keyless Support for SBOM Attestations (#910)

Co-authored-by: Alex Goodman <alex.goodman@anchore.com>

cmd/syft/cli/options/fulcio.go

@@ -0,0 +1,48 @@
+package options
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+const defaultFulcioURL = "https://fulcio.sigstore.dev"
+
+// FulcioOptions is the wrapper for Fulcio related options.
+type FulcioOptions struct {
+	URL                      string
+	IdentityToken            string
+	InsecureSkipFulcioVerify bool
+}
+
+var _ Interface = (*FulcioOptions)(nil)
+
+// AddFlags implements Interface
+func (o *FulcioOptions) AddFlags(cmd *cobra.Command, v *viper.Viper) error {
+	// TODO: change this back to api.SigstorePublicServerURL after the v1 migration is complete.
+	cmd.Flags().StringVar(&o.URL, "fulcio-url", defaultFulcioURL,
+		"address of sigstore PKI server")
+
+	cmd.Flags().StringVar(&o.IdentityToken, "identity-token", "",
+		"identity token to use for certificate from fulcio")
+
+	cmd.Flags().BoolVar(&o.InsecureSkipFulcioVerify, "insecure-skip-verify", false,
+		"skip verifying fulcio certificat and the SCT (Signed Certificate Timestamp) (this should only be used for testing).")
+	return bindFulcioConfigOptions(cmd.Flags(), v)
+}
+
+func bindFulcioConfigOptions(flags *pflag.FlagSet, v *viper.Viper) error {
+	if err := v.BindPFlag("attest.fulcio-url", flags.Lookup("fulcio-url")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.fulcio-identity-token", flags.Lookup("identity-token")); err != nil {
+		return err
+	}
+
+	if err := v.BindPFlag("attest.insecure-skip-verify", flags.Lookup("insecure-skip-verify")); err != nil {
+		return err
+	}
+
+	return nil
+}