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id.go
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id.go
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package main
import (
"encoding/pem"
"errors"
"fmt"
"io"
"os"
"github.com/RealImage/bifrost"
"github.com/google/uuid"
"github.com/urfave/cli/v2"
)
var (
bfns uuid.UUID
idCmd = &cli.Command{
Name: "identity",
Aliases: []string{"id"},
Flags: []cli.Flag{
&cli.StringFlag{
Name: "namespace",
Usage: "Bifrost Namespace `UUID`",
Aliases: []string{"n", "ns"},
EnvVars: envvarNames("NS"),
Action: func(ctx *cli.Context, s string) (err error) {
bfns, err = uuid.Parse(s)
return
},
},
},
Action: func(cliCtx *cli.Context) error {
ns, id, err := parseUUIDFromFile(bfns, cliCtx.Args().First())
if err != nil {
return cli.Exit(fmt.Sprintf("Error parsing file: %s", err), 1)
}
if ns == uuid.Nil {
return cli.Exit("Error: Namespace is required", 1)
}
if bfns != ns {
fmt.Printf("Namespace: %s\n", ns)
}
fmt.Println(id)
return nil
},
}
)
func parseUUIDFromFile(ns uuid.UUID, filename string) (uuid.UUID, uuid.UUID, error) {
var data []byte
var err error
switch filename {
case "", "-":
data, err = io.ReadAll(os.Stdin)
default:
data, err = os.ReadFile(filename)
}
if err != nil {
return ns, uuid.Nil, err
}
block, _ := pem.Decode(data)
if block == nil {
return ns, uuid.Nil, errors.New("no PEM data found")
}
// Parse the key or certificate.
switch block.Type {
case "PRIVATE KEY":
privkey, err := bifrost.ParsePKCS8PrivateKey(block.Bytes)
if err != nil {
return ns, uuid.Nil, err
}
return ns, bifrost.UUID(ns, privkey.PublicKey()), nil
case "EC PRIVATE KEY":
privkey, err := bifrost.ParseECPrivateKey(block.Bytes)
if err != nil {
return ns, uuid.Nil, err
}
return ns, bifrost.UUID(ns, privkey.PublicKey()), nil
case "PUBLIC KEY":
pubkey, err := bifrost.ParsePKIXPublicKey(block.Bytes)
if err != nil {
return ns, uuid.Nil, err
}
return ns, bifrost.UUID(ns, pubkey), nil
case "CERTIFICATE":
cert, err := bifrost.ParseCertificate(block.Bytes)
if err != nil {
return ns, uuid.Nil, err
}
ns = cert.Namespace
return ns, cert.PublicKey.UUID(ns), nil
case "CERTIFICATE REQUEST":
csr, err := bifrost.ParseCertificateRequest(block.Bytes)
if err != nil {
return ns, uuid.Nil, err
}
ns = csr.Namespace
return ns, csr.PublicKey.UUID(ns), nil
default:
return ns, uuid.Nil, fmt.Errorf("unsupported PEM block type: %s", block.Type)
}
}