Feat: HMAC auth and check

pkg/auth/auth.go

@@ -0,0 +1,29 @@
+package auth
+
+import (
+	model "github.com/HFO4/cloudreve/models"
+	"github.com/HFO4/cloudreve/pkg/serializer"
+)
+
+var (
+	ErrAuthFailed = serializer.NewError(serializer.CodeNoRightErr, "鉴权失败", nil)
+	ErrExpired    = serializer.NewError(serializer.CodeSignExpired, "签名已过期", nil)
+)
+
+// General 通用的认证接口
+var General Auth
+
+// Auth 鉴权认证
+type Auth interface {
+	// 对给定Body进行签名,expires为0表示永不过期
+	Sign(body string, expires int64) string
+	// 对给定Body和Sign进行检查
+	Check(body string, sign string) error
+}
+
+// Init 初始化通用鉴权器
+func Init() {
+	General = HMACAuth{
+		SecretKey: []byte(model.GetSettingByName("secret_key")),
+	}
+}