From b974646749716ea35649513329d6bd34a698f78e Mon Sep 17 00:00:00 2001
From: Lan Tian <xuyh0120@outlook.com>
Date: Fri, 10 Apr 2020 12:38:33 +0800
Subject: [PATCH] Fix int overflow

---
 frontend/telegram_bot.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/frontend/telegram_bot.go b/frontend/telegram_bot.go
index d53e25c..a742c07 100644
--- a/frontend/telegram_bot.go
+++ b/frontend/telegram_bot.go
@@ -115,11 +115,11 @@ func webHandlerTelegramBot(w http.ResponseWriter, r *http.Request) {
 
 	} else if telegramIsCommand(request.Message.Text, "whois") {
 		if setting.netSpecificMode == "dn42" {
-			targetNumber, err := strconv.Atoi(target)
+			targetNumber, err := strconv.ParseUint(target, 10, 64)
 			if err == nil {
 				if targetNumber < 10000 {
 					targetNumber += 4242420000
-					target = strconv.Itoa(targetNumber)
+					target = strconv.FormatUint(targetNumber, 10)
 				}
 			}
 		}