Merge pull request #1128 from sofia-riese/patch-6

refactor(set_fw_wan): replace recursion with while loop

scripts/menus/7_gateway.sh

@@ -78,6 +78,7 @@ gateway() {
 
 # 公网防火墙
 set_fw_wan() {
+    while true; do
         [ -z "$fw_wan" ] && fw_wan=ON
         echo "-----------------------------------------------"
         echo -e "\033[31m注意：\033[0m如在vps运行，还需在vps安全策略对相关端口同时放行"
@@ -95,6 +96,9 @@ set_fw_wan() {
         echo "-----------------------------------------------"
         read -p "请输入对应数字 > " num
         case $num in
+        "" | 0)
+            break
+            ;;
         1)
             if [ "$fw_wan" = ON ]; then
                 read -p "确认关闭防火墙？这会带来极大的安全隐患！(1/0) > " res
@@ -103,7 +107,6 @@ set_fw_wan() {
                 fw_wan=ON
             fi
             setconfig fw_wan "$fw_wan"
-		set_fw_wan
             ;;
         2)
             port_count=$(echo "$fw_wan_ports" | awk -F',' '{print NF}')
@@ -121,7 +124,6 @@ set_fw_wan() {
                 fi
             fi
             sleep 1
-		set_fw_wan
             ;;
         3)
             read -p "请输入要移除的端口号 > " port
@@ -136,19 +138,20 @@ set_fw_wan() {
                 echo -e "\033[31m输入错误！请输入已添加过的端口！\033[0m"
             fi
             sleep 1
-		set_fw_wan
             ;;
         4)
             fw_wan_ports=''
             setconfig fw_wan_ports
             sleep 1
-		set_fw_wan
             ;;
         *)
             errornum
+            sleep 1
             ;;
         esac
+    done
 }
+
 #tg_BOT相关
 set_bot_tg_config(){
 	setconfig TG_TOKEN "$TOKEN" "$GT_CFG_PATH"