Added cmd to expire preauth keys (requested in #78)

cmd/headscale/cli/preauthkeys.go

@@ -19,6 +19,7 @@ func init() {
 	}
 	preauthkeysCmd.AddCommand(listPreAuthKeys)
 	preauthkeysCmd.AddCommand(createPreAuthKeyCmd)
+	preauthkeysCmd.AddCommand(expirePreAuthKeyCmd)
 	createPreAuthKeyCmd.PersistentFlags().Bool("reusable", false, "Make the preauthkey reusable")
 	createPreAuthKeyCmd.PersistentFlags().Bool("ephemeral", false, "Preauthkey for ephemeral nodes")
 	createPreAuthKeyCmd.Flags().StringP("expiration", "e", "", "Human-readable expiration of the key (30m, 24h, 365d...)")
@@ -119,3 +120,42 @@ var createPreAuthKeyCmd = &cobra.Command{
 		fmt.Printf("Key: %s\n", k.Key)
 	},
 }
+
+var expirePreAuthKeyCmd = &cobra.Command{
+	Use:   "expire",
+	Short: "Expire a preauthkey",
+	Args: func(cmd *cobra.Command, args []string) error {
+		if len(args) < 1 {
+			return fmt.Errorf("missing parameters")
+		}
+		return nil
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		n, err := cmd.Flags().GetString("namespace")
+		if err != nil {
+			log.Fatalf("Error getting namespace: %s", err)
+		}
+		o, _ := cmd.Flags().GetString("output")
+
+		h, err := getHeadscaleApp()
+		if err != nil {
+			log.Fatalf("Error initializing: %s", err)
+		}
+
+		k, err := h.GetPreAuthKey(n, args[0])
+		if err != nil {
+			log.Fatalf("Error getting the key: %s", err)
+		}
+
+		err = h.MarkExpirePreAuthKey(k)
+		if strings.HasPrefix(o, "json") {
+			JsonOutput(k, err, o)
+			return
+		}
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		fmt.Println("Expired")
+	},
+}

preauth_keys.go

@@ -67,6 +67,19 @@ func (h *Headscale) GetPreAuthKeys(namespaceName string) (*[]PreAuthKey, error)
 	return &keys, nil
 }
 
+func (h *Headscale) GetPreAuthKey(namespace string, key string) (*PreAuthKey, error) {
+	pak, err := h.checkKeyValidity(key)
+	if err != nil {
+		return nil, err
+	}
+
+	if pak.Namespace.Name != namespace {
+		return nil, errors.New("Namespace mismatch")
+	}
+
+	return pak, nil
+}
+
 func (h *Headscale) MarkExpirePreAuthKey(k *PreAuthKey) error {
 	if err := h.db.Model(&k).Update("Expiration", time.Now()).Error; err != nil {
 		return err