armbian-firstlogin

#!/bin/bash
#
# Copyright (c) Authors: http://www.armbian.com/authors
#
# 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.

. /etc/armbian-release


check_abort()
{

	echo -e "\nDisabling user account creation procedure\n"
	rm -f /root/.not_logged_in_yet
	if [[ ${USER_SHELL} == zsh ]]; then
		printf "\nYou selected \e[0;91mZSH\x1B[0m as your default shell. If you want to use it right away, please logout and login! \n\n"
	fi
	trap - INT
	exit 0

}


read_password()
{

	unset password
	prompt="$1 password: "
	while IFS= read -p "$prompt" -r -s -n 1 char
	do
		if [[ $char == $'\0' ]]
		then
			break
		fi
		prompt='*'
		password+="$char"
	done

}


set_shell()
{

	optionsAudits=($(cat /etc/shells | grep "zsh\|/bash" | sed 's/\/bin\///g' | sed 's/\/usr//g' | uniq))
	USER_SHELL="bash"

	if [[ "${#optionsAudits[@]}" -gt 1 ]]; then
		while :
			do
				i=1
				echo -e "\nChoose default system command shell:\n"
				for o in  "${optionsAudits[@]}"; do
					echo "$i) $o"
					let i++
				done
				read -n1 -s reply
				case $reply in
					"1"|"${optionsAudits[0]}") USER_SHELL="${optionsAudits[0]}"; break;;
					"2"|"${optionsAudits[1]}") USER_SHELL="${optionsAudits[1]}"; break;;
					*) USER_SHELL="${optionsAudits[0]}"; break;;
				esac
			done
	fi
	SHELL_PATH=$(grep /$USER_SHELL$ /etc/shells | tail -1)

	chsh -s $(grep -iF "/$USER_SHELL" /etc/shells | tail -1)
	echo -e "\nShell: \x1B[92m${USER_SHELL^^}\x1B[0m"

	# change shell for future users
	sed -i "s|^SHELL=.*|SHELL=${SHELL_PATH}|" /etc/default/useradd
	sed -i "s|^DSHELL=.*|DSHELL=${SHELL_PATH}|" /etc/adduser.conf

}

set_timezone_and_locales()
{

	# Grab this machine's public IP address
	PUBLIC_IP=`curl --max-time 5 -s https://ipinfo.io/ip`
	if [ $? -eq 0 ]; then

		# Call the geolocation API and capture the output
		RES=$(
				curl --max-time 5 -s http://ipwhois.app/json/${PUBLIC_IP} | \
				jq '.timezone, .country, .country_code' | \
				while read -r TIMEZONE; do
					read -r COUNTRY
					echo "${TIMEZONE},${COUNTRY},${COUNTRYCODE}" | tr --delete \"
				done
			)

		TZDATA=$(echo ${RES} | cut -d"," -f1)
		STATE=$(echo ${RES} | cut -d"," -f2)
		CCODE=$(echo ${RES} | cut -d"," -f3 | xargs)
		LOCALES=$(grep territory /usr/share/i18n/locales/* | grep _"$CCODE" | cut -d ":" -f 1 | cut -d "/" -f 6 |  \
		xargs -I{} grep {} /usr/share/i18n/SUPPORTED | grep "\.UTF-8" | cut -d " " -f 1)
		# UTF8 is not present everywhere so check again in case it returns empty value
		[[ -z "$LOCALES" ]] && LOCALES=$(grep territory /usr/share/i18n/locales/* | grep _"$CCODE" | cut -d ":" -f 1 | cut -d "/" -f 6 |  \
		xargs -I{} grep {} /usr/share/i18n/SUPPORTED | cut -d " " -f 1)
		echo -e "Detected timezone: \x1B[92m$TZDATA\x1B[0m"
		echo ""
		read -n1 -s -r -p "Set user language based on your location? [Y/n] " response
		echo ""
		# change it only if we have a match and if we agree
		if [[ -n "$LOCALES" && "${response}" =~ ^(Y|y|"")$ ]]; then

			options=(`echo ${LOCALES}`);

			# when having more locales, prompt for choosing one
			if [[ "${#options[@]}" -gt 1 ]]; then

				options+=("Skip generating locales")
				echo -e "\nAt your location, more locales are possible:\n"
				PS3='Please enter your choice:'
				select opt in "${options[@]}"
				do
					if [[ " ${options[@]} " =~ " ${opt} " ]]; then
						LOCALES=${opt}
						break
					fi
				done

			fi

			if [[ "${LOCALES}" != *Skip* ]]; then

				# reconfigure tzdata
				timedatectl set-timezone "${TZDATA}"
				dpkg-reconfigure --frontend=noninteractive tzdata > /dev/null 2>&1

				# generate locales
				echo ""
				sed -i 's/# '"${LOCALES}"'/'"${LOCALES}"'/' /etc/locale.gen
				echo -e "Generating locales: \x1B[92m${LOCALES}\x1B[0m"
				locale-gen $LOCALES > /dev/null 2>&1

				# setting detected locales only for user
				echo "export LC_ALL=$LOCALES" >> /home/$RealUserName/.bashrc
				echo "export LANG=$LOCALES" >> /home/$RealUserName/.bashrc
				echo "export LANGUAGE=$LOCALES" >> /home/$RealUserName/.bashrc
				echo "export LC_ALL=$LOCALES" >> /home/$RealUserName/.xsessionrc
				echo "export LANG=$LOCALES" >> /home/$RealUserName/.xsessionrc
				echo "export LANGUAGE=$LOCALES" >> /home/$RealUserName/.xsessionrc

			fi
		fi
	fi

}




add_profile_sync_settings()
{
	/usr/bin/psd >/dev/null 2>&1
	config_file="${HOME}/.config/psd/psd.conf"
	if [ -f "${config_file}" ]; then
		# test for overlayfs
		sed -i 's/#USE_OVERLAYFS=.*/USE_OVERLAYFS="yes"/' "${config_file}"
		case $(/usr/bin/psd p 2>/dev/null | grep Overlayfs) in
			*active*)
				echo -e "\nConfigured profile sync daemon with overlayfs."
				;;
			*)
				echo -e "\nConfigured profile sync daemon."
				sed -i 's/USE_OVERLAYFS="yes"/#USE_OVERLAYFS="no"/' "${config_file}"
				;;
		esac
	fi
	systemctl --user enable psd.service >/dev/null 2>&1
	systemctl --user start psd.service >/dev/null 2>&1
}





add_user()
{
	read -t 0 temp

	while [ -f "/root/.not_logged_in_yet" ]; do
		echo -e "\nPlease provide a username (eg. your forename): \c"
		read -e username
		RealUserName="$(echo "$username" | tr '[:upper:]' '[:lower:]' | tr -d -c '[:alnum:]')"
		[ -z "$RealUserName" ] && return
		if ! id "$RealUserName" >/dev/null 2>&1; then break; else echo -e "Username \e[0;31m$RealUserName\x1B[0m already exists on the system."; fi
	done

	while [ -f "/root/.not_logged_in_yet" ]; do
		read_password "Create"
		first_input=$password
		echo ""
		read_password "Repeat"
		second_input=$password
		echo ""
		if [[ $first_input == $second_input ]]; then
			result="$(cracklib-check <<<"$password")"
			okay="$(awk -F': ' '{ print $2}' <<<"$result")"
			if [[ "$okay" == "OK" ]]; then
				echo -e ""
				read -e -p "Please provide your real name: " -i "${RealUserName^}" RealName

				adduser --quiet --disabled-password --home /home/"$RealUserName" --gecos "$RealName" "$RealUserName"
				(echo $first_input;echo $second_input;) | passwd "$RealUserName" >/dev/null 2>&1
				for additionalgroup in sudo netdev audio video disk tty users games dialout plugdev input bluetooth systemd-journal ssh; do
					usermod -aG ${additionalgroup} ${RealUserName} 2>/dev/null
				done

				# fix for gksu in Xenial
				touch /home/$RealUserName/.Xauthority
				chown $RealUserName:$RealUserName /home/$RealUserName/.Xauthority
				RealName="$(awk -F":" "/^${RealUserName}:/ {print \$5}" </etc/passwd | cut -d',' -f1)"
				[ -z "$RealName" ] && RealName=$RealUserName
				echo -e "\nDear \e[0;92m${RealName}\x1B[0m, your account \e[0;92m${RealUserName}\x1B[0m has been created and is sudo enabled."
				echo -e "Please use this account for your daily work from now on.\n"
				rm -f /root/.not_logged_in_yet

				# set up profile sync daemon on desktop systems
				which psd >/dev/null 2>&1
				if [ $? -eq 0 ]; then
					echo -e "${RealUserName} ALL=(ALL) NOPASSWD: /usr/bin/psd-overlay-helper" >> /etc/sudoers
					touch /home/${RealUserName}/.activate_psd
					chown $RealUserName:$RealUserName /home/${RealUserName}/.activate_psd
				fi
				break
			else
				echo -e "Rejected - \e[0;31m$okay.\x1B[0m Try again."
			fi
		elif [[ -n $password ]]; then
			echo -e "Rejected - \e[0;31mpasswords do not match.\x1B[0m Try again."
		fi
	done

}

if [[ -f /root/.not_logged_in_yet && -n $(tty) ]]; then
	# disable autologin
	rm -f /etc/systemd/system/getty@.service.d/override.conf
	rm -f /etc/systemd/system/serial-getty@.service.d/override.conf
	systemctl daemon-reload

	# detect display manager
	desktop_lightdm=$(dpkg-query -W -f='${db:Status-Abbrev}\n' lightdm 2>/dev/null)
	desktop_gdm3=$(dpkg-query -W -f='${db:Status-Abbrev}\n' gdm3 2>/dev/null)

	if [ "$IMAGE_TYPE" != "nightly" ]; then
		if [ "$BRANCH" == "dev" ]; then
			echo -e "\nYou are using an Armbian preview build !!!"
			echo -e "\nThis image is provided \e[0;31mAS IS\x1B[0m with \e[0;31mNO WARRANTY\x1B[0m and \e[0;31mNO END USER SUPPORT!\x1B[0m.\n"
		elif [ "$DISTRIBUTION_STATUS" != "supported" ]; then
			echo -e "\nYou are using an Armbian with unsupported ($DISTRIBUTION_CODENAME) userspace !!!"
			echo -e "\nThis image is provided \e[0;31mAS IS\x1B[0m with \e[0;31mNO WARRANTY\x1B[0m and \e[0;31mNO END USER SUPPORT!\x1B[0m.\n"
		fi
	else
		echo -e "\nYou are using an Armbian nightly build meant only for developers to provide"
		echo -e "constructive feedback to improve build system, OS settings or user experience."
		echo -e "If this does not apply to you, \e[0;31mSTOP NOW!\x1B[0m. Especially don't use this image for"
		echo -e "daily work since things might not work as expected or at all and may break"
		echo -e "anytime with next update. \e[0;31mYOU HAVE BEEN WARNED!\x1B[0m"
		echo -e "\nThis image is provided \e[0;31mAS IS\x1B[0m with \e[0;31mNO WARRANTY\x1B[0m and \e[0;31mNO END USER SUPPORT!\x1B[0m.\n"
	fi

	echo -e "New to Armbian? Documentation: \e[1m\e[39mhttps://docs.armbian.com\x1B[0m Support: \e[1m\e[39mhttps://forum.armbian.com\x1B[0m\n"

	trap '' 2
	while [ -f "/root/.not_logged_in_yet" ]; do

		read_password "New root"

		# only allow one login. Once you enter root password, kill others.
		loginfrom=$(who am i | awk '{print $2}')
		who -la | grep root | grep -v "$loginfrom" | awk '{print $7}' | xargs --no-run-if-empty kill -9

		first_input=$password
		echo ""
		read_password "Repeat"
		second_input=$password
		echo ""
		if [[ $first_input == $second_input ]]; then
			result="$(cracklib-check <<<"$password")"
			okay="$(awk -F': ' '{ print $2}' <<<"$result")"
			if [[ "$okay" == "OK" ]]; then
				(echo $first_input;echo $second_input;) | passwd root >/dev/null 2>&1
				break
				else
				echo -e "Rejected - \e[0;31m$okay.\x1B[0m Try again."
			fi
		elif [[ -n $password ]]; then
			echo -e "Rejected - \e[0;31mpasswords do not match.\x1B[0m Try again."
		fi
	done
	trap - INT TERM EXIT

	# ask user to select shell
	trap '' 2
	set_shell
	trap - INT TERM EXIT

	trap check_abort INT

	while [ -f "/root/.not_logged_in_yet" ]; do
		echo -e "\nCreating a new user account. Press <Ctrl-C> to abort"
		[ -n "$desktop_lightdm" ] && echo -e "\n\e[0;31mDesktop environment will not be enabled if you abort the new user creation\x1B[0m"
		add_user
	done
	trap - INT TERM EXIT

	# ask user to select automated locales or not
	trap '' 2
	set_timezone_and_locales
	trap - INT TERM EXIT

	if [[ ${USER_SHELL} == zsh ]]; then
		printf "\nYou selected \e[0;91mZSH\x1B[0m as your default shell. If you want to use it right away, please logout and login! \n\n"
	fi

	# check whether desktop environment has to be considered
	if [ -n "$desktop_lightdm" ] && [ -n "$RealName" ] ; then

			# 1st run goes without login
			mkdir -p /etc/lightdm/lightdm.conf.d
			cat <<-EOF > /etc/lightdm/lightdm.conf.d/22-armbian-autologin.conf
			[Seat:*]
			autologin-user=$RealUserName
			autologin-user-timeout=0
			user-session=xfce
			EOF

			# select gnome session (has to be first or it breaks budgie/cinnamon desktop autologin and user-session)
			[[ -x $(which gnome-session) ]] && sed -i "s/user-session.*/user-session=ubuntu/" /etc/lightdm/lightdm.conf.d/11-armbian.conf
			[[ -x $(which gnome-session) ]] && sed -i "s/user-session.*/user-session=ubuntu/" /etc/lightdm/lightdm.conf.d/22-armbian-autologin.conf

			# select budgie session
			[[ -x $(which budgie-desktop) ]] && sed -i "s/user-session.*/user-session=budgie-desktop/" /etc/lightdm/lightdm.conf.d/11-armbian.conf
			[[ -x $(which budgie-desktop) ]] && sed -i "s/user-session.*/user-session=budgie-desktop/" /etc/lightdm/lightdm.conf.d/22-armbian-autologin.conf		

			# select deepin session
			[[ -x $(which deepin-wm) ]] && sed -i "s/user-session.*/user-session=deepin/" /etc/lightdm/lightdm.conf.d/11-armbian.conf
			[[ -x $(which deepin-wm) ]] && sed -i "s/user-session.*/user-session=deepin/" /etc/lightdm/lightdm.conf.d/22-armbian-autologin.conf

			# select cinnamon session
			[[ -x $(which cinnamon) ]] && sed -i "s/user-session.*/user-session=cinnamon/" /etc/lightdm/lightdm.conf.d/11-armbian.conf
			[[ -x $(which cinnamon) ]] && sed -i "s/user-session.*/user-session=cinnamon/" /etc/lightdm/lightdm.conf.d/22-armbian-autologin.conf			

			# select mate session
			[[ -x $(which mate-wm) ]] && sed -i "s/user-session.*/user-session=mate/" /etc/lightdm/lightdm.conf.d/11-armbian.conf
			[[ -x $(which mate-wm) ]] && sed -i "s/user-session.*/user-session=mate/" /etc/lightdm/lightdm.conf.d/22-armbian-autologin.conf

			ln -sf /lib/systemd/system/lightdm.service /etc/systemd/system/display-manager.service

			if [[ -f /var/run/resize2fs-reboot ]]; then
				# Let the user reboot now otherwise start desktop environment
				printf "\n\n\e[0;91mWarning: a reboot is needed to finish resizing the filesystem \x1B[0m \n"
				printf "\e[0;91mPlease reboot the system now \x1B[0m \n\n"
			elif [ -z "$ConfigureDisplay" ] || [ "$ConfigureDisplay" = "n" ] || [ "$ConfigureDisplay" = "N" ]; then
				echo -e "\n\e[1m\e[39mNow starting desktop environment...\x1B[0m\n"
				sleep 1
				service lightdm start 2>/dev/null
				if [ -f /root/.desktop_autologin ]; then
					rm /root/.desktop_autologin
				else
					systemctl -q enable armbian-disable-autologin.timer
					systemctl start armbian-disable-autologin.timer
				fi
				# logout if logged at console
				[[ -n $(who -la | grep root | grep tty1) ]] && exit 1
			fi

	elif [ -n "$desktop_gdm3" ] && [ -n "$RealName" ] ; then

			# 1st run goes without login
			mkdir -p /etc/gdm3
			cat <<-EOF > /etc/gdm3/custom.conf
			[daemon]
			AutomaticLoginEnable = true
			AutomaticLogin = $RealUserName
			EOF

			ln -sf /lib/systemd/system/gdm3.service /etc/systemd/system/display-manager.service

				if [[ -f /var/run/resize2fs-reboot ]]; then

					# Let the user reboot now otherwise start desktop environment
					printf "\n\n\e[0;91mWarning: a reboot is needed to finish resizing the filesystem \x1B[0m \n"
					printf "\e[0;91mPlease reboot the system now \x1B[0m \n\n"

				elif [ -z "$ConfigureDisplay" ] || [ "$ConfigureDisplay" = "n" ] || [ "$ConfigureDisplay" = "N" ]; then

					echo -e "\n\e[1m\e[39mNow starting desktop environment...\x1B[0m\n"
					sleep 1
					service gdm3 start 2>/dev/null
					if [ -f /root/.desktop_autologin ]; then
						rm /root/.desktop_autologin
					else
						(sleep 20; sed -i "s/AutomaticLoginEnable.*/AutomaticLoginEnable = false/" /etc/gdm3/custom.conf) &
					fi
					# logout if logged at console
					[[ -n $(who -la | grep root | grep tty1) ]] && exit 1

				fi

	else

		# Display reboot recommendation if necessary
		if [[ -f /var/run/resize2fs-reboot ]]; then
			printf "\n\n\e[0;91mWarning: a reboot is needed to finish resizing the filesystem \x1B[0m \n"
			printf "\e[0;91mPlease reboot the system now \x1B[0m \n\n"
		fi

	fi

fi