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