refactor(forwhat): replace recursion with while loop

scripts/menus/userguide.sh

@@ -4,10 +4,8 @@
 [ -n "$__IS_MODULE_USERGUIDE_LOADED" ] && return
 __IS_MODULE_USERGUIDE_LOADED=1
 
-#新手引导
+forwhat() {
-userguide(){
+    while true; do
-	. "$CRASHDIR"/libs/check_dir_avail.sh
-	forwhat(){
         echo "-----------------------------------------------"
         echo -e "\033[30;46m 欢迎使用ShellCrash新手引导！ \033[0m"
         echo "-----------------------------------------------"
@@ -18,110 +16,126 @@ userguide(){
         echo -e " 2 \033[36mLinux设备仅配置本机代理\033[0m"
         [ -f "$CFG_PATH.bak" ] && echo -e " 3 \033[33m还原之前备份的设置\033[0m"
         echo "-----------------------------------------------"
-		read -p "请输入对应数字 > " num
+        read -pr "请输入对应数字 > " num
         case "$num" in
-		1)
+        "" | 1)
-			#设置运行模式
+            # 设置运行模式
             redir_mod="混合模式"
-			[ -n "$(echo $cputype | grep -E "linux.*mips.*")" ] && {
+            echo "$cputype" | grep -Eq 'linux.*mips.*' && {
                 if grep -qE '^TPROXY$' /proc/net/ip_tables_targets || modprobe xt_TPROXY >/dev/null 2>&1; then
                     redir_mod="Tproxy模式"
                 else
                     redir_mod="Redir模式"
                 fi
             }
+
             [ -z "$crashcore" ] && crashcore=meta
             setconfig crashcore "$crashcore"
             setconfig redir_mod "$redir_mod"
             setconfig dns_mod mix
             setconfig firewall_area '1'
-			#默认启用绕过CN-IP
+            # 默认启用绕过CN-IP
             setconfig cn_ip_route ON
-			#自动识别IPV6
+            # 自动识别IPV6
             [ -n "$(ip a 2>&1 | grep -w 'inet6' | grep -E 'global' | sed 's/.*inet6.//g' | sed 's/scope.*$//g')" ] && {
                 setconfig ipv6_redir ON
                 setconfig ipv6_support ON
                 setconfig ipv6_dns ON
                 setconfig cn_ipv6_route ON
             }
-			#设置开机启动
+            # 设置开机启动
-			[ -f /etc/rc.common -a "$(cat /proc/1/comm)" = "procd" ] && /etc/init.d/shellcrash enable
+            if [ -f /etc/rc.common ] && [ "$(cat /proc/1/comm)" = "procd" ]; then
-			ckcmd systemctl && [ "$(cat /proc/1/comm)" = "systemd" ] && systemctl enable shellcrash.service > /dev/null 2>&1
+                /etc/init.d/shellcrash enable
+            fi
+
+            ckcmd systemctl && [ "$(cat /proc/1/comm)" = "systemd" ] && systemctl enable shellcrash.service >/dev/null 2>&1
             rm -rf "$CRASHDIR"/.dis_startup
             autostart=enable
-			#检测IP转发
+            # 检测IP转发
-			if [ "$(cat /proc/sys/net/ipv4/ip_forward)" = "0" ];then
+            if [ "$(cat /proc/sys/net/ipv4/ip_forward)" = "0" ]; then
                 echo "-----------------------------------------------"
                 echo -e "\033[33m检测到你的设备尚未开启ip转发，局域网设备将无法正常连接网络，是否立即开启？\033[0m"
-				read -p "是否开启？(1/0) > " res
+                read -pr "是否开启？(1/0) > " res
                 [ "$res" = 1 ] && {
-					echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
+                    echo 'net.ipv4.ip_forward = 1' >>/etc/sysctl.conf
                     sysctl -w net.ipv4.ip_forward=1
                 } && echo "已成功开启ipv4转发，如未正常开启，请手动重启设备！" || echo "开启失败！请自行谷歌查找当前设备的开启方法！"
             fi
-			#禁止docker启用的net.bridge.bridge-nf-call-iptables
+            # 禁止docker启用的net.bridge.bridge-nf-call-iptables
-			sysctl -w net.bridge.bridge-nf-call-iptables=0 > /dev/null 2>&1
+            sysctl -w net.bridge.bridge-nf-call-iptables=0 >/dev/null 2>&1
-			sysctl -w net.bridge.bridge-nf-call-ip6tables=0 > /dev/null 2>&1
+            sysctl -w net.bridge.bridge-nf-call-ip6tables=0 >/dev/null 2>&1
+            break
             ;;
         2)
             setconfig redir_mod "Redir模式"
-			[ -n "$(echo $cputype | grep -E "linux.*mips.*")" ] && setconfig crashcore "clash"
+            echo "$cputype" | grep -Eq "linux.*mips.*" && setconfig crashcore "clash"
             setconfig common_ports "OFF"
             setconfig firewall_area '2'
+            break
             ;;
         3)
-			mv -f $CFG_PATH.bak $CFG_PATH
+            mv -f "$CFG_PATH.bak" "$CFG_PATH"
             echo -e "\033[32m脚本设置已还原！\033[0m"
             echo -e "\033[33m请重新启动脚本！\033[0m"
             exit 0
             ;;
         *)
             errornum
-			forwhat
+            sleep 1
             ;;
         esac
-	}
+    done
+}
+
+# 新手引导
+userguide() {
+    . "$CRASHDIR"/libs/check_dir_avail.sh
     forwhat
-	#检测小内存模式
+
+    # 检测小内存模式
     dir_size=$(dir_avail "$CRASHDIR")
-	if [ "$dir_size" -lt 10240 ];then
+    if [ "$dir_size" -lt 10240 ]; then
         echo "-----------------------------------------------"
         echo -e "\033[33m检测到你的安装目录空间不足10M，是否开启小闪存模式？\033[0m"
         echo -e "\033[0m开启后核心及数据库文件将被下载到内存中，这将占用一部分内存空间\033[0m"
         echo -e "\033[0m每次开机后首次运行服务时都会自动的重新下载相关文件\033[0m"
         echo "-----------------------------------------------"
-		read -p "是否开启？(1/0) > " res
+        read -pr "是否开启？(1/0) > " res
         [ "$res" = 1 ] && {
             BINDIR=/tmp/ShellCrash
             setconfig BINDIR /tmp/ShellCrash "$CRASHDIR"/configs/command.env
         }
     fi
-	#启用推荐的自动任务配置
+
+    # 启用推荐的自动任务配置
     . "$CRASHDIR"/menus/5_task.sh && task_recom
-	#小米设备软固化
+
-	if [ "$systype" = "mi_snapshot" ];then
+    # 小米设备软固化
+    if [ "$systype" = "mi_snapshot" ]; then
         echo "-----------------------------------------------"
         echo -e "\033[33m检测到为小米路由设备，启用软固化可防止路由升级后丢失SSH\033[0m"
-		read -p "是否启用软固化功能？(1/0) > " res
+        read -pr "是否启用软固化功能？(1/0) > " res
         [ "$res" = 1 ] && mi_autoSSH
     fi
-	#提示导入订阅或者配置文件
+
-	[ ! -s "$CRASHDIR"/yamls/config.yaml -a ! -s "$CRASHDIR"/jsons/config.json ] && {
+    # 提示导入订阅或者配置文件
+    if [ ! -s "$CRASHDIR"/yamls/config.yaml ] && [ ! -s "$CRASHDIR"/jsons/config.json ]; then
         echo "-----------------------------------------------"
         echo -e "\033[32m是否导入配置文件？\033[0m(这是运行前的最后一步)"
         echo -e "\033[0m你必须拥有一份配置文件才能运行服务！\033[0m"
         echo "-----------------------------------------------"
-		read -p "现在开始导入？(1/0) > " res
+        read -pr "现在开始导入？(1/0) > " res
         [ "$res" = 1 ] && inuserguide=1 && {
             . "$CRASHDIR"/menus/6_core_config.sh && set_core_config
             inuserguide=""
         }
-	}
+    fi
-	#回到主界面
+
+    # 回到主界面
     echo "-----------------------------------------------"
     echo -e "\033[36m很好！现在只需要执行启动就可以愉快的使用了！\033[0m"
     echo "-----------------------------------------------"
-	read -p "立即启动服务？(1/0) > " res
+    read -pr "立即启动服务？(1/0) > " res
     [ "$res" = 1 ] && start_core && sleep 2
     return 0
 }