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dagger/keychain/keys.go
Andrea Luzzardi af776b8abe cleanup: move packages to top level, change vanity URL
Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
2021-05-25 16:54:00 -07:00

97 lines
2.0 KiB
Go

package keychain
import (
"context"
"errors"
"fmt"
"os"
"os/user"
"path"
"path/filepath"
"time"
"filippo.io/age"
"github.com/rs/zerolog/log"
)
func Path() (string, error) {
usr, err := user.Current()
if err != nil {
return "", err
}
return path.Join(usr.HomeDir, ".dagger", "keys.txt"), nil
}
func Default(ctx context.Context) (string, error) {
keys, err := List(ctx)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
return Generate(ctx)
}
return "", err
}
if len(keys) == 0 {
return "", errors.New("no identities found in the keys file")
}
return keys[0].Recipient().String(), nil
}
func Generate(ctx context.Context) (string, error) {
keysFile, err := Path()
if err != nil {
return "", err
}
k, err := age.GenerateX25519Identity()
if err != nil {
return "", fmt.Errorf("internal error: %v", err)
}
if err := os.MkdirAll(filepath.Dir(keysFile), 0755); err != nil {
return "", err
}
f, err := os.OpenFile(keysFile, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600)
if err != nil {
return "", fmt.Errorf("failed to open keys file %q: %v", keysFile, err)
}
defer f.Close()
fmt.Fprintf(f, "# created: %s\n", time.Now().Format(time.RFC3339))
fmt.Fprintf(f, "# public key: %s\n", k.Recipient())
fmt.Fprintf(f, "%s\n", k)
pubkey := k.Recipient().String()
log.Ctx(ctx).Debug().Str("publicKey", pubkey).Msg("generating keypair")
return pubkey, nil
}
func List(ctx context.Context) ([]*age.X25519Identity, error) {
keysFile, err := Path()
if err != nil {
return nil, err
}
f, err := os.Open(keysFile)
if err != nil {
return nil, fmt.Errorf("failed to open keys file file %q: %w", keysFile, err)
}
ids, err := age.ParseIdentities(f)
if err != nil {
return nil, fmt.Errorf("failed to parse input: %w", err)
}
keys := make([]*age.X25519Identity, 0, len(ids))
for _, id := range ids {
key, ok := ids[0].(*age.X25519Identity)
if !ok {
return nil, fmt.Errorf("internal error: unexpected identity type: %T", id)
}
keys = append(keys, key)
}
return keys, nil
}