migrate from github

auth/auth.go

@@ -0,0 +1,34 @@
+package auth
+
+import (
+	"net/http"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+type Authenticator struct {
+	secret string
+}
+
+func NewAuthenticator(secret string) *Authenticator {
+	return &Authenticator{
+		secret: secret,
+	}
+}
+
+func (a *Authenticator) ValidateToken(tokenString string) error {
+	if tokenString == "" {
+		return http.ErrNoCookie
+	}
+
+	if a.secret != "" {
+		_, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+			return []byte(a.secret), nil
+		}, jwt.WithValidMethods([]string{"HS256", "HS384", "HS512"}))
+		return err
+	}
+
+	// TODO: jwt redis support
+	_, _, err := new(jwt.Parser).ParseUnverified(tokenString, jwt.MapClaims{})
+	return err
+}