From b315c4a741dd68e58929c60400a67babc0ffed0e Mon Sep 17 00:00:00 2001
From: jsvisa <delweng@gmail.com>
Date: Wed, 27 Sep 2023 23:48:11 +0800
Subject: [PATCH] internal/flags: validate port

Signed-off-by: jsvisa <delweng@gmail.com>
---
 internal/flags/flags.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/internal/flags/flags.go b/internal/flags/flags.go
index 69e9743556..d975d3bbdd 100644
--- a/internal/flags/flags.go
+++ b/internal/flags/flags.go
@@ -375,3 +375,13 @@ func eachName(f cli.Flag, fn func(string)) {
 		fn(name)
 	}
 }
+
+// ValidatePort validates the port number is in the valid range.
+func ValidatePort(name string) func(*cli.Context, int) error {
+	return func(ctx *cli.Context, port int) error {
+		if port < 0 || port >= 65535 {
+			return fmt.Errorf("Flag %s value %v out of range[0-65535]", name, port)
+		}
+		return nil
+	}
+}