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// Copyright 2024 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 main
import (
"fmt"
"log"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/sigstore/sigstore-go/pkg/bundle"
)
var bundlePath *string
var certOIDC *string
var certSAN *string
var identityToken *string
var trustedRootPath *string
func usage() {
fmt.Println("Usage:")
fmt.Printf("\t%s sign-bundle --identity-token TOKEN --bundle FILE FILE\n", os.Args[0])
fmt.Printf("\t%s verify-bundle --bundle FILE --certificate-identity IDENTITY --certificate-oidc-issuer URL [--trusted-root FILE] FILE\n", os.Args[0])
}
func parseArgs() {
for i := 2; i < len(os.Args); {
switch os.Args[i] {
// TODO: support staging (see https://github.com/sigstore/cosign/issues/2434)
//
// Today cosign signing does not yet use sigstore-go, and so we would
// need to make some clever invocation of `cosign initialize` to
// support staging. Instead it might make sense to wait for cosign
// signing to use sigstore-go.
case "--bundle":
bundlePath = &os.Args[i+1]
i += 2
case "--certificate-oidc-issuer":
certOIDC = &os.Args[i+1]
i += 2
case "--certificate-identity":
certSAN = &os.Args[i+1]
i += 2
case "--identity-token":
identityToken = &os.Args[i+1]
i += 2
case "--trusted-root":
trustedRootPath = &os.Args[i+1]
i += 2
default:
i++
}
}
}
func main() {
if len(os.Args) < 2 {
usage()
os.Exit(1)
}
parseArgs()
args := []string{}
switch os.Args[1] {
case "sign-bundle":
args = append(args, "sign-blob")
args = append(args, "-y")
case "verify-bundle":
args = append(args, "verify-blob")
// How do we know if we should expect signed timestamps or not?
// Let's crack open the bundle
if bundlePath != nil {
b, err := bundle.LoadJSONFromPath(*bundlePath)
if err != nil {
log.Fatal(err)
}
ts, err := b.Timestamps()
if err != nil {
log.Fatal(err)
}
if len(ts) > 0 {
args = append(args, "--use-signed-timestamps")
}
}
default:
log.Fatalf("Unsupported command %s", os.Args[1])
}
if bundlePath != nil {
args = append(args, "--bundle", *bundlePath)
args = append(args, "--new-bundle-format")
}
if identityToken != nil {
args = append(args, "--identity-token", *identityToken)
}
if certSAN != nil {
args = append(args, "--certificate-identity", *certSAN)
}
if certOIDC != nil {
args = append(args, "--certificate-oidc-issuer", *certOIDC)
}
if trustedRootPath != nil {
args = append(args, "--trusted-root", *trustedRootPath)
}
args = append(args, os.Args[len(os.Args)-1])
dir := filepath.Dir(os.Args[0])
cmd := exec.Command(filepath.Join(dir, "cosign"), args...) // #nosec G204
var out strings.Builder
cmd.Stdout = &out
cmd.Stderr = &out
err := cmd.Run()
fmt.Println(out.String())
if err != nil {
log.Fatal(err)
}
}
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