Add symlink creation to updates module and uptool

updates/uptool/update.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"encoding/json"
+	"io/ioutil"
+
+	"github.com/safing/portmaster/updates"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(updateCmd)
+}
+
+var updateCmd = &cobra.Command{
+	Use:   "update",
+	Short: "Update scans the current directory and updates the index and symlink structure",
+	RunE:  update,
+}
+
+func update(cmd *cobra.Command, args []string) error {
+
+	latest, err := updates.ScanForLatest(".", true)
+	if err != nil {
+		return err
+	}
+
+	data, err := json.MarshalIndent(latest, "", " ")
+	if err != nil {
+		return err
+	}
+
+	err = ioutil.WriteFile("stable.json", data, 0755)
+	if err != nil {
+		return err
+	}
+
+	err = updates.CreateSymlinks(updatesStorage.ChildDir("latest", 0755), updatesStorage, latest)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}