debian-config-submenu

#!/bin/bash
#
# Copyright (c) 2017 Igor Pecovnik, igor.pecovnik@gma**.com
#
# This file is licensed under the terms of the GNU General Public
# License version 2. This program is licensed "as is" without any
# warranty of any kind, whether express or implied.


DIALOG_CANCEL=1
DIALOG_ESC=255


#-----------------------------------------------------------------------------------------------------------------------------------------#
# gather info about the board and start with loading menu
#
[[ -f /etc/armbian-release ]] && source /etc/armbian-release && ARMBIAN="Armbian $VERSION $IMAGE_TYPE";
DISTRO=$(lsb_release -is)
DISTROID=$(lsb_release -sc)
KERNELID=$(uname -r)
BACKTITLE="Configuration utility, $ARMBIAN, https://www.armbian.com"
TITLE="$BOARD_NAME "
DEFAULT_ADAPTER=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)')
dialog --backtitle "$BACKTITLE" --title "Please wait" --infobox "\nLoading Armbian configuration utility ... " 5 45
sleep 1


check_if_installed (){
#------------------------------------------------------------------------------------------------------------------------------------------
# check dpkg status of $1 -- currently only 'not installed at all' case catched
#------------------------------------------------------------------------------------------------------------------------------------------
	local DPKG_Status="$(dpkg -s "$1" 2>/dev/null | awk -F": " '/^Status/ {print $2}')"
	if [[ "X${DPKG_Status}" = "X" || "${DPKG_Status}" = *deinstall* ]]; then
		return 1
	else
		return 0
	fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# check all possible wireless modes
#
function check_advanced_modes ()
{
CHECK=$(systemctl daemon-reload;service hostapd stop; sleep 2;service hostapd start;sleep 2;service hostapd status|grep fail)
# check n,a and ac modes
if [[ -z "$CHECK" ]]; then
	dialog --title " Info " --backtitle "$BACKTITLE" --no-collapse --colors --infobox "\nProbing wireless 802.11n \Z1(150-300Mbps)\Z0" 5 43
	sleep 2
	sed '/### IEEE 802.11n/,/^### IEEE 802.11n/ s/^# *//' -i /etc/hostapd.conf
	CHECK=$(systemctl daemon-reload;service hostapd stop; sleep 2;service hostapd start;sleep 2;service hostapd status|grep fail)
	if [[ -z "$CHECK" ]]; then
		# check various HT modes
		check_ht_capab
		# than go to check 5Ghz
		dialog --title " Info " --backtitle "$BACKTITLE" --no-collapse --colors --infobox "\nProbing wireless 802.11a \Z1(5Ghz)\Z0" 5 36
		sleep 2
		sed '/### IEEE 802.11a\>/,/^### IEEE 802.11a\>/ s/^# *//' -i /etc/hostapd.conf
		CHECK=$(systemctl daemon-reload;service hostapd stop; sleep 2;service hostapd start;sleep 2;service hostapd status|grep fail)
		if [[ -n "$CHECK" ]]; then
			check_channels
		fi
		CHECK=$(systemctl daemon-reload;service hostapd stop; sleep 2;service hostapd start;service hostapd status|grep fail)
		if [[ -z "$CHECK" ]]; then
			dialog --title " Info " --backtitle "$BACKTITLE" --no-collapse --colors \
			--infobox "\nProbing wireless 802.11ac \Z1(433Mbps x n @ 5Ghz)\Z0" 5 51
			sleep 2
			sed '/### IEEE 802.11ac\>/,/^### IEEE 802.11ac\>/ s/^# *//' -i /etc/hostapd.conf
			CHECK=$(systemctl daemon-reload;service hostapd stop; sleep 2;service hostapd start;service hostapd status|grep fail)
			if [[ -n "$CHECK" ]]; then
				dialog --title " Reverting configuration " --backtitle "$BACKTITLE" --no-collapse --colors \
				--infobox "\nWireless 802.11ac \Z1(433Mbps x n @ 5Ghz)\Z0 is not supported!" 5 60
				sed '/## IEEE 802.11ac\>/,/^## IEEE 802.11ac\>/ s/.*/#&/' -i /etc/hostapd.conf
			fi
		else
			dialog --title " Reverting configuration " --backtitle "$BACKTITLE" --no-collapse --colors \
			--infobox "\nWireless 802.11a \Z1(5Ghz)\Z0 is not supported!" 5 45
			sed -i "s/^channel=.*/channel=5/" /etc/hostapd.conf
			sed '/## IEEE 802.11a\>/,/^## IEEE 802.11a\>/ s/.*/#&/' -i /etc/hostapd.conf
		fi
	else
		dialog --title " Reverting configuration " --backtitle "$BACKTITLE" --no-collapse --colors \
		--infobox "\nWireless 802.11n \Z1(150-300Mbps)\Z0 is not supported!" 5 52
		sed '/## IEEE 802.11n/,/^## IEEE 802.11n/ s/.*/#&/' -i /etc/hostapd.conf
	fi
fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# create interface configuration section
#
function create_if_config() {
		address=$(ip -4 addr show dev $1 | awk '/inet/ {print $2}' | cut -d'/' -f1)
		netmask=$(ifconfig $1 | sed -rn '2s/ .*:(.*)$/\1/p')
		gateway=$(route -n | grep 'UG[ \t]' | awk '{print $2}' | sed -n '1p')
		echo -e "# armbian-config created"
		echo -e "source /etc/network/interfaces.d/*\n"
		echo -e "allow-hotplug $2\nno-auto-down $2"
		if [[ "$3" != "fixed" ]]; then
			echo -e "iface $2 inet dhcp"
		else
			echo -e "iface $2 inet static\n\taddress $address\n\tnetmask $netmask\n\tgateway $gateway\n\tdns-nameservers 8.8.8.8"
		fi
} #


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# reaload network related services. some are "just in case"
#
function reload-nety() {
	systemctl daemon-reload
	if [[ "$1" == "reload" ]]; then WHATODO="Reloading services"; else WHATODO="Stopping services"; fi
	(service network-manager stop; echo 10; sleep 1; service hostapd stop; echo 20; sleep 1; service dnsmasq stop; echo 30; sleep 1;\
	[[ "$1" == "reload" ]] && service dnsmasq start && echo 60 && sleep 1 && service hostapd start && echo 80 && sleep 1;\
	service network-manager start; echo 90; sleep 5;) | dialog --backtitle "$BACKTITLE" --title " $WHATODO " --gauge "" 6 70 0
	systemctl restart systemd-resolved.service
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# Check if something is running on port $1 and display info
#
check_port ()
{
[[ -n $(netstat -lnt | awk '$6 == "LISTEN" && $4 ~ ".'$1'"') ]] && dialog --backtitle "$BACKTITLE" --title "Checking service" \
--msgbox "\nIt looks good.\n\nThere is $2 service on port $1" 9 52
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# show disclaimer
#
function beta_disclaimer ()
{
exec 3>&1
ACKNOWLEDGEMENT=$(dialog --nocancel --backtitle "$BACKTITLE" --no-collapse --title " Warning " \
--clear \--radiolist "\n$1.\n \n" 12 56 7 "Yes, I understand" "" off	 2>&1 1>&3)
exec 3>&-
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# show box
#
function show_box ()
{
dialog --colors --backtitle "$BACKTITLE" --no-collapse --title " $1 " --clear --msgbox "\n$2\n \n" $3 56
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# check wifi high throughput
#
function check_ht_capab ()
{
declare -a arr=("[HT40+][LDPC][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1][DSSS_CCK-40][SMPS-STATIC]" \
"[HT40-][SHORT-GI-40][SHORT-GI-40][DSSS_CCK-40]" "[SHORT-GI-20][SHORT-GI-40][HT40+]")
local j=0
for i in "${arr[@]}"
do
	j=$((j+1))
	dialog --title " Info " --backtitle "$BACKTITLE" --no-collapse --colors \
	--infobox "\nProbing high throughput capabilities \Z1(${j})\Z0" 5 46
	sed -i "s/^ht_capab=.*/ht_capab=$i/" /etc/hostapd.conf
	CHECK=$(systemctl daemon-reload;service hostapd stop; sleep 2;service hostapd start;sleep 2;service hostapd status|grep fail)
	if [[ -z "$CHECK" ]]; then break; fi
done
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# check 5Ghz channels
#
function check_channels ()
{
declare -a arr=("36" "40")
for i in "${arr[@]}"
do
	dialog --title " Info " --backtitle "$BACKTITLE" --no-collapse --colors --infobox "\nProbing channels \Z1(${i})\Z0" 5 26
	sed -i "s/^channel=.*/channel=$i/" /etc/hostapd.conf
	CHECK=$(systemctl daemon-reload;service hostapd stop; sleep 2;service hostapd start;sleep 2;service hostapd status|grep fail)
	if [[ -z "$CHECK" ]]; then break; fi
done
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
#
# show description for MOTD files
#
function description
{
	case $1 in
		*header*)
			echo "Big board logo and kernel info"
		;;
		*sysinfo*)
			echo "Sysinfo - load, ip, memory, uptime, ..."
		;;
		*tips*)
			echo "Shows tip of the day"
		;;
		*updates*)
			echo "Display number of avaliable updates"
		;;
		*armbian-config*)
			echo "Show command for system configuration"
		;;
		*autoreboot-warn*)
			echo "Show warning when reboot is needed"
		;;
		*)
		echo ""
		;;
	esac
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# edit ip address
#
function ip_editor ()
{
	exec 3>&1
	dialog --title " Static IP configuration" --backtitle "$BACKTITLE" --form "\nAdapter: $1
	\n " 12 38 0 \
	"Address:"				1 1 "$address"				1 15 15 0 \
	"Netmask:"			2 1 "$netmask"	2 15 15 0 \
	"Gateway:"			3 1 "$gateway"			3 15 15 0 \
	2>&1 1>&3 | {
		read -r address;read -r netmask;read -r gateway
		if [[ $? = 0 ]]; then
				echo -e "# armbian-config created\nsource /etc/network/interfaces.d/*\n\nallow-hotplug $2\
				\nno-auto-down $2\niface $2 inet static\
				\n\taddress $address\n\tnetmask $netmask\n\tgateway $gateway\n\tdns-nameservers 8.8.8.8" > $3
		fi
		}
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# edit hostapd parameters
#
function wlan_edit_basic ()
{
	source /etc/hostapd.conf
	exec 3>&1
	dialog --title "AP configuration" --backtitle "$BACKTITLE" --form "\nWPA2 enabled, \
	advanced config: edit /etc/hostapd.conf\n " 12 58 0 \
	"SSID:"				1 1 "$ssid"				1 31 22 0 \
	"Password:"			2 1 "$wpa_passphrase"	2 31 22 0 \
	"Channel:"			3 1 "$channel"			3 31 3 0 \
	2>&1 1>&3 | {
		read -r ssid;read -r wpa_passphrase;read -r channel
		if [[ $? = 0 ]]; then
				sed -i "s/^ssid=.*/ssid=$ssid/" /etc/hostapd.conf
				sed -i "s/^wpa_passphrase=.*/wpa_passphrase=$wpa_passphrase/" /etc/hostapd.conf
				sed -i "s/^channel=.*/channel=$channel/" /etc/hostapd.conf
				wpa_psk=$(wpa_passphrase $ssid $wpa_passphrase | grep '^[[:blank:]]*[^[:blank:]#;]' | grep psk | cut -d= -f2-)
				sed -i "s/^wpa_psk=.*/wpa_psk=$wpa_psk/" /etc/hostapd.conf
		fi
		}
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# edit hostapd parameters
#
function wlan_edit ()
{
	# select default interfaces if there is more than one
	select_default_interface
	dialog --title " Configuration edit " --colors --backtitle "$BACKTITLE" --help-button --help-label "Cancel" --yes-label "Basic" \
	--no-label "Advanced" --yesno "\n\Z1Basic:\Z0    Change SSID, password and channel\n\n\Z1Advanced:\Z0 Edit /etc/hostapd.conf file" 9 70
	if [[ $? = 0 ]]; then
		wlan_edit_basic
	elif [[ $? = 1 ]]; then
		dialog --backtitle "$BACKTITLE" --title " Edit hostapd configuration /etc/hostapd.conf" --no-collapse \
		--ok-label "Save" --editbox /etc/hostapd.conf 30 0 2> /etc/hostapd.conf.out
		[[ $? = 0 ]] && mv /etc/hostapd.conf.out /etc/hostapd.conf && service hostapd restart
	fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# naming exceptions for packages
#
function exceptions ()
{
	TARGET_FAMILY=$LINUXFAMILY
	UBOOT_BRANCH=$TARGET_BRANCH # uboot naming is different

	if [[ $TARGET_BRANCH == "default" ]]; then TARGET_BRANCH=""; else TARGET_BRANCH="-"$TARGET_BRANCH; fi
	if [[ $TARGET_FAMILY == sun*i ]]; then
		TARGET_FAMILY="sunxi"
		if [[ $UBOOT_BRANCH == "default" ]]; then
			TARGET_FAMILY=$(cat /proc/cpuinfo | grep "Hardware" | sed 's/^.*Allwinner //' | awk '{print $1;}')
		fi
	fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# here we add wifi exceptions
#
function wlan_exceptions ()
{
	[[ -n "$(lsmod | grep -w dhd)" && $1 = "on" ]] && \
	echo 'options dhd op_mode=2' >/etc/modprobe.d/ap6212.conf && rmmod dhd && modprobe dhd
	[[ -n "$(lsmod | grep -w dhd)" && $1 = "off" ]] && \
	rm /etc/modprobe.d/ap6212.conf && rmmod dhd && modprobe dhd
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# check if board has alternative kernels
#
function aval_kernel ()
{
	IFS=$'\r\n'
	GLOBIGNORE='*'
	AVAL_KERNEL=($(apt-cache search --names-only '^linux-'$(lsb_release	 -cs)'-root.*.'$BOARD'*' \
	| grep -w "$BOARD " | sed 's/.*(\(.*\))/\1/' | awk '{print $1}' | grep -v "$BRANCH" ))
	local LIST=()
	for i in "${AVAL_KERNEL[@]}"
	do
			LIST+=( "${i[0]//[[:blank:]]/}" "" )
	done
	LIST_LENGHT=$((${#LIST[@]}/2));
	if [ "$LIST_LENGHT" -eq 1 ]; then
			TARGET_BRANCH=${AVAL_KERNEL[0]}
	else
			exec 3>&1
			TARGET_BRANCH=$(dialog --cancel-label "Back" --backtitle "$BACKTITLE" --no-collapse \
			--title "Upgrade from $BRANCH to:" --clear --menu "" $((6+${LIST_LENGHT})) 40 15 "${LIST[@]}" 2>&1 1>&3)
			exitstatus=$?;
			exec 3>&-
	fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# select video modes for h3
#
function get_h3modes ()
{
	IFS=$'\r\n'
	GLOBIGNORE='*'
	SCREEN_RESOLUTION=($(h3disp -i))
	local LIST=()
	for i in "${SCREEN_RESOLUTION[@]}"
	do
			LIST+=( "${i[0]//[[:blank:]]/}" "" )
	done
	LIST_LENGHT=$((${#LIST[@]}/2));
	#echo $LIST_LENGHT
	#exit
	if [ "$LIST_LENGHT" -eq 1 ]; then
			SCREEN_RESOLUTION=${SCREEN_RESOLUTION[0]}
	else
			exec 3>&1
			SCREEN_RESOLUTION=$(dialog --nocancel --backtitle "$BACKTITLE" --no-collapse \
			--title "Select video mode" --clear --menu "" $((6+${LIST_LENGHT})) 25 $((1+${LIST_LENGHT})) "${LIST[@]}" 2>&1 1>&3)
			exec 3>&-
	fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# search for wlan interfaces and provide a selection menu if there are more than one
#
function get_wlan_interface ()
{
	IFS=$'\r\n'
	GLOBIGNORE='*'
	WLAN_INTERFACES=($(nmcli dev status | grep wifi | grep disconnected |awk '{print $1}'))

	local LIST=()
	for i in "${WLAN_INTERFACES[@]}"
	do
			LIST+=( "${i[0]//[[:blank:]]/}" "" )
	done
	LIST_LENGHT=$((${#LIST[@]}/2));

	if [ "$LIST_LENGHT" -eq 1 ]; then
			WIRELESS_ADAPTER=${WLAN_INTERFACES[0]}
	else
			exec 3>&1
			WIRELESS_ADAPTER=$(dialog --nocancel --backtitle "$BACKTITLE" --no-collapse \
			--title "Select interface" --clear --menu "" $((6+${LIST_LENGHT})) 30 15 "${LIST[@]}" 2>&1 1>&3)
			exec 3>&-
	fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# select interface if there is more than one
#
function select_default_interface ()
{
	IFS=$'\r\n'
	GLOBIGNORE='*'
	local ADAPTER=($(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)'))
	local LIST=()
	for i in "${ADAPTER[@]}"
	do
			LIST+=( "${i[0]//[[:blank:]]/}" "" )
	done
	LIST_LENGHT=$((${#LIST[@]}/2));
	if [ "$LIST_LENGHT" -eq 1 ]; then
			DEFAULT_ADAPTER=${ADAPTER[0]}
	else
			exec 3>&1
			DEFAULT_ADAPTER=$(dialog --nocancel --backtitle "$BACKTITLE" --no-collapse \
			--title "Select default interface" --clear --menu "" $((6+${LIST_LENGHT})) 30 15 "${LIST[@]}" 2>&1 1>&3)
			exec 3>&-
	fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# search for BT devices and connect
#
function connect_bt_interface ()
{
		IFS=$'\r\n'
		GLOBIGNORE='*'
		dialog --backtitle "$BACKTITLE" --title "Please wait" --infobox "\nDiscovering Bluetooth devices ... " 5 37
		BT_INTERFACES=($(hcitool scan | sed '1d'))

		local LIST=()
		for i in "${BT_INTERFACES[@]}"
		do
			local a=$(echo ${i[0]//[[:blank:]]/} | sed -e 's/^\(.\{17\}\).*/\1/')
			local b=${i[0]//$a/}
			local b=$(echo $b | sed -e 's/^[ \t]*//')
			LIST+=( "$a" "$b")
		done

		LIST_LENGHT=$((${#LIST[@]}/2));
		if [ "$LIST_LENGHT" -eq 0 ]; then
			BT_ADAPTER=${WLAN_INTERFACES[0]}
			dialog --backtitle "$BACKTITLE" --title "Bluetooth" --msgbox "\nNo nearby Bluetooth devices were found!" 7 43
		else
			exec 3>&1
			BT_ADAPTER=$(dialog --backtitle "$BACKTITLE" --no-collapse --title "Select interface" \
			--clear --menu "" $((6+${LIST_LENGHT})) 50 15 "${LIST[@]}" 2>&1 1>&3)
			exec 3>&-
			if [[ $BT_ADAPTER != "" ]]; then
				dialog --backtitle "$BACKTITLE" --title "Please wait" --infobox "\nConnecting to $BT_ADAPTER " 5 35
				BT_EXEC=$(
				expect -c 'set prompt "#";set address '$BT_ADAPTER';spawn bluetoothctl;expect -re $prompt;send "disconnect $address\r";
				sleep 1;send "remove $address\r";sleep 1;expect -re $prompt;send "scan on\r";sleep 8;send "scan off\r";
				expect "Controller";send "trust $address\r";sleep 2;send "pair $address\r";sleep 2;send "connect $address\r";
				send_user "\nShould be paired now.\r";sleep 2;send "quit\r";expect eof')
				echo "$BT_EXEC" > /tmp/bt-connect-debug.log
					if [[ $(echo "$BT_EXEC" | grep "Connection successful" ) != "" ]]; then
						dialog --backtitle "$BACKTITLE" --title "Bluetooth" --msgbox "\nYour device is ready to use!" 7 32
					else
						dialog --backtitle "$BACKTITLE" --title "Bluetooth" --msgbox "\nError connecting. Try again!" 7 32
					fi
			fi
		fi
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# system
#
function submenu_settings ()
{
while true; do

	LIST=()

	LIST+=( "Timezone" "Change timezone \Z5($(date +%Z))\Z0" )
	LIST+=( "Locales" "Reconfigure language \Z5($(locale | grep LANGUAGE | cut -d= -f2 | cut -d_ -f1))\Z0 and character set" )
	LIST+=( "Hostname" "Change your hostname \Z5($(cat /etc/hostname))\Z0" )
	LIST+=( "SSH" "Reconfigure SSH daemon" )
	LIST+=( "Firmware" "Upgrade board firmware" )

	# detect desktop
	DISPLAY_MANAGER=""; DESKTOP_INSTALLED=""
	if [ $(dpkg-query -W -f='${db:Status-Abbrev}\n' nodm 2>/dev/null) <> "*ii*" ]; then DESKTOP_INSTALLED="nodm"; fi
	if [ $(dpkg-query -W -f='${db:Status-Abbrev}\n' lightdm 2>/dev/null) <> "*ii*" ]; then DESKTOP_INSTALLED="lightdm"; fi
	[[ -n $(service lightdm status 2> /dev/null | grep -w active) ]] && DISPLAY_MANAGER="lightdm"
	[[ -n $(service nodm status 2> /dev/null | grep -w active) ]] && DISPLAY_MANAGER="nodm"

	if [[ -n $DISPLAY_MANAGER ]]; then
			LIST+=( "Desktop" "Disable desktop" )
			[[ $DISPLAY_MANAGER == 'nodm' ]] && 			LIST+=( "Lightdm" "Switch to standard login manager" )
			[[ $DISPLAY_MANAGER == 'lightdm' ]] && 			LIST+=( "Nodm" "Switch to simple auto login manager" )
		elif [[ -n $DESKTOP_INSTALLED ]]; then
			LIST+=( "Desktop" "Enable desktop" )
	fi

	if [[ -n $DISPLAY_MANAGER ]]; then
			if [[ $(service xrdp status 2> /dev/null | grep -w active) ]]; then
				LIST+=( "RDP" "Disable remote desktop access from Windows" )
				else
				LIST+=( "RDP" "Enable remote desktop access from Windows" )
			fi
	fi
	LIST+=( "Services" "Toggle running services" )
	if [[ "$DISTRO" == "Ubuntu" && "$(modinfo overlay > /dev/null 2>&1; echo $?)" == "0" ]]; then
		if [ -n "$(mount | grep -w tmpfs-root)" ]; then
			LIST+=( "Overlayroot" "Disable virtual read-only root filesystem" )
		else
			LIST+=( "Overlayroot" "Enable virtual read-only root filesystem" )
		fi
	fi

	# count number of menu items to adjust window sizee
	LISTLENGHT="$((6+${#LIST[@]}/2))"
	BOXLENGHT=${#LIST[@]}

	exec 3>&1
	selection=$(dialog --colors --backtitle "$BACKTITLE" --title " System settings " --clear \
	--cancel-label "Back" --menu "$disclaimer" $LISTLENGHT 70 $BOXLENGHT \
	"${LIST[@]}" 2>&1 1>&3)
	exit_status=$?
	exec 3>&-
	[[ $exit_status == $DIALOG_CANCEL || $exit_status == $DIALOG_ESC ]] && clear && break

	# run main function
	jobs "$selection"
done
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# menu for networking
#
function submenu_networking ()
{

# if there is more than one connected device
select_default_interface

while true; do

	LIST=()

	LIST+=( "IP" "Select dynamic or edit static IP address" )
	HOSTAPDBRIDGE=$(cat /etc/hostapd.conf 2> /dev/null | grep -w "^bridge=br0")
	HOSTAPDSTATUS=$(service hostapd status | grep -w active | grep -w running)
	if [[ -n "$HOSTAPDSTATUS" ]]; then
			HOSTAPDINFO=$(hostapd_cli get_config 2> /dev/null | grep ^ssid | sed 's/ssid=//g')
			HOSTAPDCLIENTS=$(hostapd_cli all_sta 2> /dev/null | grep connected_time | wc -l)
			LIST+=( "Hotspot" "Manage active wireless access point" )
		else
			[[ -n $(nmcli device status | grep wifi | grep -w disconnected) ]] && LIST+=( "Hotspot" "Create WiFi access point" )

	fi

	if [[ -n $(nmcli device status | grep wifi | grep -v unavailable | grep -v unmanaged) ]]; then
		LIST+=( "WiFi" "Manage wireless networking" )
	else
		LIST+=( "Clear" "Clear possible blocked interfaces" )
	fi

	if [[ -n $(service bluetooth status | grep -w active | grep -w running) ]]; then
		[[ $(hcitool dev | sed '1d') != "" ]] && LIST+=( "Discover" "Discover and connect Bluetooth devices" )
	fi

	LIST+=( "Advanced" "Edit /etc/network/interfaces" )
	[[ $(ls -1 /etc/NetworkManager/system-connections 2> /dev/null) ]] && \
	LIST+=( "Forget" "Disconnect and forget all wireless connections" )

	# count number of menu items to adjust window sizee
	LISTLENGHT="$((13+${#LIST[@]}/2))"
	BOXLENGHT=${#LIST[@]}
	WIFICONNECTED=$(nmcli -f NAME,TYPE connection show --active | grep wireless | awk 'NF{NF-=1};1')

	local disclaimer=""

	local ipadd=$(ip -4 addr show dev $DEFAULT_ADAPTER | awk '/inet/ {print $2}' | cut -d'/' -f1)

	if [[ -n $(grep $DEFAULT_ADAPTER /etc/network/interfaces | grep static) ]]; then
		local ifup="\nStatic IP ($DEFAULT_ADAPTER) via IFUPDOWN: \Z1${ipadd}\n\Z0 "
	elif [[ -n $(grep $DEFAULT_ADAPTER /etc/network/interfaces | grep dhcp) ]]; then
		local ifup="\nDynamic IP ($DEFAULT_ADAPTER) via IFUPDOWN: \Z1${ipadd}\n\Z0 "
	else
		local ifup="\nDynamic IP ($DEFAULT_ADAPTER) via Network Manager: \Z1${ipadd}\n\Z0 "
	fi
	disclaimer="$ifup"

	if [[ -n $WIFICONNECTED ]]; then
		LISTLENGHT=$((LISTLENGHT+2))
		local connected="\n\Z0Connected to SSID: \Z1${WIFICONNECTED}\n\Z0 "
		disclaimer=$disclaimer"$connected"
	fi

	if [[ -n $HOSTAPDINFO && -n $HOSTAPDSTATUS ]]; then
		LISTLENGHT=$((LISTLENGHT+2))
		chpid=$(dmesg | grep $(grep ^interface /etc/hostapd.conf | sed 's/interface=//g') | head -1 | sed 's/\[.*\]//g' | awk '{print $1}')
		disclaimer=$disclaimer$"\n\Z0Hotspot SSID: \Z1$HOSTAPDINFO\Zn Band:";
		if [[ `grep ^hw_mode=a /etc/hostapd.conf` ]]; then local band="5Ghz"; else band="2.4Ghz"; fi
		if [[ `grep ^ieee80211n /etc/hostapd.conf` ]]; then local type="N"; fi
		if [[ `grep ^ieee80211ac /etc/hostapd.conf` ]]; then local type="AC"; fi
		disclaimer=$disclaimer$" \Z1${band} ${type}\Z0"
		if [ -n $chpid ]; then disclaimer=$disclaimer$"\n\nChip: \Z1${chpid}\Z0"; fi
		if [ "$HOSTAPDCLIENTS" -gt "0" ]; then disclaimer=$disclaimer$" Connected clients: \Z1$HOSTAPDCLIENTS\Zn"; fi
		if [ -n $chip ] || [ "$HOSTAPDCLIENTS" -gt "0" ]; then LISTLENGHT=$((LISTLENGHT+2)); fi
		disclaimer=$disclaimer$"\n";
	fi

	disclaimer=$disclaimer"\n\Z1Note\Zn: wireless networking in Linux is problematic.\
	Our tools make it easy for some cases but can't enable AP on every random WiFi chip. If this tool fail, you are on your own.\n "

	exec 3>&1
	selection=$(dialog --backtitle "$BACKTITLE" --colors --title " Wired, Wireless, Bluetooth, Hotspot " --clear \
	--cancel-label "Back" --menu "${disclaimer}" $LISTLENGHT 70 $BOXLENGHT \
	"${LIST[@]}" 2>&1 1>&3)
	exit_status=$?
	exec 3>&-
	[[ $exit_status == $DIALOG_CANCEL || $exit_status == $DIALOG_ESC ]] && clear && break

	# run main function
	jobs "$selection"
done
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# armbian
#
function submenu_hardware ()
{
while true; do

	LIST=()

	[[ $(sed -n 's/^DEVNAME=//p' /sys/dev/block/$(mountpoint -d /)/uevent 2> /dev/null) == mmcblk* && -f /usr/sbin/nand-sata-install ]] \
	&& LIST+=( "Install" "Install to SATA, eMMC, NAND or USB" )
	if [[ -n $(apt-mark showhold | grep -w "$BOARD") ]]; then
			LIST+=( "Unhold" "Un-Freeze kernel and board support packages" )
		else
			LIST+=( "Hold" "Freeze kernel and board support packages" )
	fi
	[[ -n $(grep -w "#kernel.printk" /etc/sysctl.conf ) ]] && LIST+=( "Lowlevel" "Stop low-level messages on console" )
	[[ -f /boot/armbianEnv.txt ]] && LIST+=( "Bootenv" "Edit boot environment" )
	[[ -f /boot/boot.ini ]] && LIST+=( "Bootscript" "Edit boot script" )
	LIST+=( "Welcome" "Toggle welcome screen items" )
	if [[ -z $(apt-mark showhold | grep -w "$BOARD") ]]; then
	[[ -f /etc/apt/sources.list.d/armbian.list ]] && [[ -n $(grep -w apt /etc/apt/sources.list.d/armbian.list) ]] \
		&& LIST+=( "Nightly" "Switch to nightly builds" )
	[[ -f /etc/apt/sources.list.d/armbian.list ]] && [[ -n $(grep -w beta /etc/apt/sources.list.d/armbian.list) ]] \
		&& LIST+=( "Stable" "Switch to stable builds" )
	fi
	[[ -d /boot/dtb/overlay && $LINUXFAMILY == sun*i && $BRANCH != default ]] && \
	LIST+=( "Overlays" "Toggle board functions: UART, I2C, SPI, ..." )
	[[ $(apt-cache search --names-only '^linux-'$(lsb_release  -cs)'-root.*.'$BOARD'' | sed 's/.*(\(.*\))/\1/' | awk '{print $1}' \
	| wc -l) -gt 1 ]] && LIST+=( "Switch" "Switch to alternative kernels" )

	# count number of menu items to adjust window sizee
	LISTLENGHT="$((6+${#LIST[@]}/2))"
	BOXLENGHT=${#LIST[@]}

	exec 3>&1
	selection=$(dialog --backtitle "$BACKTITLE" --title " Armbian specific settings " --clear \
	--cancel-label "Back" --menu "$disclaimer" $LISTLENGHT 70 $BOXLENGHT \
	"${LIST[@]}" 2>&1 1>&3)
	exit_status=$?
	exec 3>&-
	[[ $exit_status == $DIALOG_CANCEL || $exit_status == $DIALOG_ESC ]] && clear && break

	# run main function
	jobs "$selection"

done
}


#-----------------------------------------------------------------------------------------------------------------------------------------#
# software
#
function submenu_software ()
{
while true; do

	LIST=()
	[[ -f /usr/bin/softy ]] && LIST+=( "Softy" "3rd party applications installer" )
	[[ -f /usr/bin/h3consumption && "$LINUXFAMILY" = "sun8i" && "$BRANCH" = "default" ]] && \
	LIST+=( "Consumption" "Control board consumption" )


	check_if_installed bluetooth && LIST+=( "Remove BT" "Remove Bluetooth support" ) || LIST+=( "Bluetooth" "Install Bluetooth support" )
	check_if_installed lirc && LIST+=( "Remove IR" "Remove IR support" ) || LIST+=( "IR" "Install IR support" )

	[[ -f /usr/bin/armbianmonitor ]] && LIST+=( "Monitor" "Simple CLI board monitoring" )
	[[ -f /usr/bin/armbianmonitor ]] && LIST+=( "Diagnostics" "Send diagnostics" )
	[[ -f /usr/bin/bin2fex && "$LINUXFAMILY" = sun*i && "$BRANCH" = "default" ]] && LIST+=( "Fexedit" "Board (fex) settings editor" )
	if [[ -n $(dpkg -l | grep linux-headers) ]]; then LIST+=( "Headers" "Remove kernel headers" ); else \
	LIST+=( "Headers" "Install kernel headers" ); fi
	[[ -f /usr/bin/h3disp && "$LINUXFAMILY" = "sun8i" && "$BRANCH" = "default" && \
	-n $(bin2fex </boot/script.bin 2>/dev/null | grep -w "hdmi_used = 1") ]] && LIST+=( "Display" "set the display resolution" )

	# count number of menu items to adjust window sizee
	LISTLENGHT="$((6+${#LIST[@]}/2))"
	BOXLENGHT=${#LIST[@]}

	exec 3>&1
	selection=$(dialog --backtitle "$BACKTITLE" --title "System and 3rd party software" --clear \
	--cancel-label "Back" --menu "$disclaimer" $LISTLENGHT 70 $BOXLENGHT \
	"${LIST[@]}" 2>&1 1>&3)
	exit_status=$?
	exec 3>&-
	[[ $exit_status == $DIALOG_CANCEL || $exit_status == $DIALOG_ESC ]] && clear && break

	# run main function
	jobs "$selection"
done
}