使用指针类型存储白名单、用户名和密码，允许批量传入授权配置

gateway/fwd/auth/auth.go

@@ -47,9 +47,9 @@ func Protect(conn net.Conn, proto Protocol, username, password *string) (*core.A
 	}
 
 	// 检查 IP 是否可用
-	if len(permit.Whitelists) > 0 {
+	if permit.Whitelists != nil && len(*permit.Whitelists) > 0 {
 		var found = false
-		for _, allowedHost := range permit.Whitelists {
+		for _, allowedHost := range *permit.Whitelists {
 			var allowed = net.ParseIP(allowedHost)
 			var remote = net.ParseIP(remoteHost)
 			if remote.Equal(allowed) {
@@ -62,8 +62,8 @@ func Protect(conn net.Conn, proto Protocol, username, password *string) (*core.A
 		}
 	}
 
-	if username != nil && password != nil {
-		if *username != permit.Username || *password != permit.Password {
+	if permit.Username != nil || permit.Password != nil {
+		if *username != *permit.Username || *password != *permit.Password {
 			return nil, errors.New("用户名或密码错误")
 		}
 	}