Kyle Isom
feb22db039
New 'arca add <device>' subcommand detects a LUKS device via udisks2 and appends it to the config with passphrase as default method. Supports --alias/-a to override the generated name. Skips if UUID already configured. Adds Config.Save() and Config.HasUUID() to config package. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
88 lines
1.9 KiB
Go
88 lines
1.9 KiB
Go
package cmd
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import (
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"fmt"
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"strings"
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"git.wntrmute.dev/kyle/arca/internal/config"
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"git.wntrmute.dev/kyle/arca/internal/udisks"
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"github.com/spf13/cobra"
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)
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var addAlias string
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var addCmd = &cobra.Command{
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Use: "add <device>",
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Short: "Add a device to the config",
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Long: "Detects a LUKS device via udisks2 and adds it to the config file with a default passphrase method.",
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Args: cobra.ExactArgs(1),
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RunE: runAdd,
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}
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func init() {
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addCmd.Flags().StringVarP(&addAlias, "alias", "a", "", "alias name (default: first 8 chars of UUID)")
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rootCmd.AddCommand(addCmd)
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}
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func runAdd(cmd *cobra.Command, args []string) error {
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target := args[0]
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client, err := udisks.NewClient()
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if err != nil {
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return fmt.Errorf("connecting to udisks2: %w", err)
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}
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defer client.Close()
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// Find the device to get its UUID.
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dev, err := client.FindDevice("", target)
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if err != nil {
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return err
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}
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if !dev.HasEncrypted {
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return fmt.Errorf("%s is not a LUKS-encrypted device", target)
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}
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if dev.UUID == "" {
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return fmt.Errorf("%s has no UUID", target)
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}
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cfg := config.Load()
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// Check if already configured.
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if existing := cfg.AliasFor(dev.UUID); existing != "" {
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fmt.Printf("Device %s (UUID %s) already configured as %q\n", dev.DevicePath, dev.UUID, existing)
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return nil
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}
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alias := addAlias
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if alias == "" {
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alias = aliasFromUUID(dev.UUID)
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}
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// Check for alias collision.
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if _, exists := cfg.Devices[alias]; exists {
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return fmt.Errorf("alias %q already in use — choose a different name with --alias", alias)
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}
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cfg.Devices[alias] = config.DeviceConfig{
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UUID: dev.UUID,
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Methods: []string{"passphrase"},
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}
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if err := cfg.Save(); err != nil {
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return fmt.Errorf("saving config: %w", err)
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}
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fmt.Printf("Added %s (UUID %s) as %q\n", dev.DevicePath, dev.UUID, alias)
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return nil
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}
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func aliasFromUUID(uuid string) string {
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clean := strings.ReplaceAll(uuid, "-", "")
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if len(clean) > 8 {
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clean = clean[:8]
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}
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return clean
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}
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