first commit

core/machineId.go

@@ -0,0 +1,43 @@
+package core
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/hex"
+
+	"github.com/cdle/sillyplus/core/storage"
+	"github.com/cdle/sillyplus/utils"
+)
+
+func protect(appID, id string) string {
+	mac := hmac.New(sha256.New, []byte(id))
+	mac.Write([]byte(appID))
+	return hex.EncodeToString(mac.Sum(nil))
+}
+
+func init() {
+	GetMachineID()
+	storage.Watch(sillyGirl, "machine_id", func(old, new, key string) *storage.Final {
+		if old == "" {
+			return nil
+		}
+		return &storage.Final{
+			Now: old,
+		}
+	})
+}
+
+var machine_id = ""
+
+var GetMachineID = func() string {
+	var id = ""
+	if id == "" {
+		id = sillyGirl.GetString("machine_id")
+	}
+	if id == "" {
+		id = protect(utils.GenUUID(), "sillyplus")
+		sillyGirl.Set("machine_id", id)
+	}
+	machine_id = id
+	return id
+}