#!/bin/bash
#copyright by hiboy
source /etc/storage/script/init.sh
shellinabox_port=`nvram get shellinabox_port`
shellinabox_enable=`nvram get shellinabox_enable`
[ -z $shellinabox_enable ] && shellinabox_enable=0 && nvram set shellinabox_enable=$shellinabox_enable
if [ "$shellinabox_enable" != "0" ] ; then

shellinabox_css="$(nvram get shellinabox_css)"
shellinabox_wan=`nvram get shellinabox_wan`
shellinabox_options_ttyd="$(nvram get shellinabox_options_ttyd)"

[ -z $shellinabox_port ] && shellinabox_port="4200" && nvram set shellinabox_port=$shellinabox_port
[ -z "$shellinabox_css" ] && shellinabox_css="white-on-black" && nvram set shellinabox_css="$shellinabox_css"

[ -z "$shellinabox_options_ttyd" ] && shellinabox_options_ttyd="login" && nvram set shellinabox_options_ttyd="$shellinabox_options_ttyd"

shellinabox_renum=`nvram get shellinabox_renum`
shellinabox_renum=${shellinabox_renum:-"0"}
cmd_log_enable=`nvram get cmd_log_enable`
cmd_name="shellinabox"
cmd_log=""
if [ "$cmd_log_enable" = "1" ] || [ "$shellinabox_renum" -gt "0" ] ; then
	cmd_log="$cmd_log2"
fi
fi
shell_log="【shellinabox】"
[ "$shellinabox_enable" = "2" ] && shell_log="【ttyd】"

if [ ! -z "$(echo $scriptfilepath | grep -v "/tmp/script/" | grep shellina_box)" ] && [ ! -s /tmp/script/_shellina_box ] ; then
	mkdir -p /tmp/script
	{ echo '#!/bin/bash' ; echo $scriptfilepath '"$@"' '&' ; } > /tmp/script/_shellina_box
	chmod 777 /tmp/script/_shellina_box
fi

shellinabox_restart () {
i_app_restart "$@" -name="shellinabox"
}

shellinabox_get_status () {

B_restart="$shellinabox_enable$shellinabox_port$shellinabox_css$shellinabox_options$shellinabox_wan$shellinabox_options_ttyd"

i_app_get_status -name="shellinabox" -valb="$B_restart"
}

shellinabox_check () {

shellinabox_get_status
if [ "$shellinabox_enable" = "0" ] && [ "$needed_restart" = "1" ] ; then
	[ ! -z "`pidof shellinaboxd`" ] && logger -t "$shell_log" "停止 shellinaboxd" && shellinabox_close
	[ ! -z "`pidof ttyd`" ] && logger -t "【ttyd】" "停止 ttyd" && shellinabox_close
	{ kill_ps "$scriptname" exit0; exit 0; }
fi
if [ "$shellinabox_enable" = "1" ] || [ "$shellinabox_enable" = "2" ] ; then
	if [ "$needed_restart" = "1" ] ; then
		shellinabox_close
		shellinabox_start
	else
		[ "$shellinabox_enable" = "1" ] && [ -z "`pidof shellinaboxd`" ] && shellinabox_restart
		[ "$shellinabox_enable" = "2" ] && [ -z "`pidof ttyd`" ] && shellinabox_restart
		shellinabox_port_dpt
	fi
fi
}

shellinabox_keep () {
logger -t "$shell_log" "守护进程启动"
if [ "$shellinabox_enable" = "1" ] ; then
i_app_keep -name="shellinabox" -pidof="shellinaboxd" &
fi
if [ "$shellinabox_enable" = "2" ] ; then
i_app_keep -name="shellinabox" -pidof="ttyd" &
fi
}

shellinabox_close () {

kill_ps "$scriptname keep"
sed -Ei '/【shellinabox】|^$/d' /tmp/script/_opt_script_check
sed -Ei '/【ttyd】|^$/d' /tmp/script/_opt_script_check
iptables -t filter -D INPUT -p tcp --dport $shellinabox_port -j ACCEPT
killall shellinaboxd ttyd
kill_ps "/tmp/script/_shellina_box"
kill_ps "_shellina_box.sh"
kill_ps "$scriptname"
}

shellinabox_start () {
check_webui_yes
if [ "$shellinabox_enable" = "2" ] ; then
cmd_name="ttyd"
i_app_get_cmd_file -name="shellinabox" -cmd="ttyd" -cpath="/opt/bin/ttyd" -down1="$hiboyfile/ttyd" -down2="$hiboyfile2/ttyd"
hash ttyd 2>/dev/null || { logger -t "$shell_log" "找不到 ttyd，尝试启动shellinaboxd"; nvram set shellinabox_enable=1; shellinabox_restart ; }
eval "ttyd --port $shellinabox_port $shellinabox_options_ttyd $cmd_log" &
sleep 5
i_app_keep -t -name="shellinabox" -pidof="ttyd"

fi
if [ "$shellinabox_enable" = "1" ] ; then
cmd_name="shellinabox"
SVC_PATH="/opt/sbin/shellinaboxd"
chmod 777 "$SVC_PATH"
if [ ! -s "$SVC_PATH" ] ; then
	logger -t "$shell_log" "找不到 $SVC_PATH，安装 opt mini 程序"
	/etc/storage/script/Sh01_mountopt.sh opt_mini_wget
fi
[[ "$(shellinaboxd -h 2>&1 | wc -l)" -lt 2 ]] && /etc/storage/script/Sh01_mountopt.sh libmd5_check
if [ ! -s "$SVC_PATH" ] ; then
	logger -t "$shell_log" "找不到 $SVC_PATH ，需要手动安装 $SVC_PATH"
	logger -t "$shell_log" "启动失败, 10 秒后自动尝试重新启动" && sleep 10 && shellinabox_restart x
fi
logger -t "【shellinaboxd】" "运行 shellinaboxd"
/opt/etc/init.d/S88shellinaboxd stop
sleep 5
eval "/opt/etc/init.d/S88shellinaboxd start  $cmd_log" &
sleep 5
i_app_keep -t -name="shellinabox" -pidof="shellinaboxd"

fi
shellinabox_port_dpt
#shellinabox_get_status
eval "$scriptfilepath keep &"
exit 0
}

update_app () {
SVC_PATH="/opt/bin/ttyd"
rm -rf "$SVC_PATH" /opt/opt_backup/bin/ttyd
/etc/storage/script/Sh01_mountopt.sh start
wgetcurl_file "$SVC_PATH" "$hiboyfile/ttyd" "$hiboyfile2/ttyd"
chmod 777 "$SVC_PATH"
}

shellinabox_port_dpt () {

if [ "$shellinabox_wan" = "1" ] ; then
	port=$(iptables -t filter -L INPUT -v -n --line-numbers | grep dpt:$shellinabox_port | cut -d " " -f 1 | sort -nr | wc -l)
	if [ "$port" = 0 ] ; then
		logger -t "$shell_log" "检测:找不到 ss-server 端口:$shellinabox_port 规则, 重新添加"
		iptables -t filter -I INPUT -p tcp --dport $shellinabox_port -j ACCEPT
	fi
fi

}

case $ACTION in
start)
	shellinabox_close
	shellinabox_check
	;;
check)
	shellinabox_check
	;;
stop)
	shellinabox_close
	;;
update_app)
	update_app
	;;
keep)
	#shellinabox_check
	shellinabox_keep
	;;
*)
	shellinabox_check
	;;
esac