firstrun.sh.cfg

#!/bin/bash -e
#
# firstrun.sh
# Adapted from firstrun.sh that the RPi imager creates
# Adds locale generation which does not seem to be done.
#
# ERROR failed to start command from kernel command line discussed in
# https://hub.mender.io/t/walkthrough-for-raspberry-pi-4b-fails-to-boot/5405
#
# Env vars beginning with S_ will be updated by sed during image creation
#
# NOTE: Any errors here will result in Failed to start Command from Kernel Command Line error
#
###### Hostname (first boot will have default hostname so need to replace it)
CURRENT_HOSTNAME=`cat /etc/hostname | tr -d " \t\n\r"`
echo TARGET >/etc/hostname
sed -i "s/127.0.1.1.*$CURRENT_HOSTNAME/127.0.1.1\tTARGET/g" /etc/hosts


###### Enable ssh
systemctl enable ssh


###### User configuration
FIRSTUSER=`getent passwd 1000 | cut -d: -f1`
FIRSTUSERHOME=`getent passwd 1000 | cut -d: -f6`

if [ -f /usr/lib/userconf-pi/userconf ]; then
	# Seems 64-bit image contains this script to ensure a FIRSTUSER is set up
	/usr/lib/userconf-pi/userconf 'S_USER' 'S_PWD'
else
	# Not sure any of this matters...may not even work!
	if [[ -z "${FIRSTUSER}" ]]; then
		# No $FIRSTUSER with uid 1000 so create S_USER with group and home
		useradd -u 1000 -g 1000 -n S_USER
	else
		if [[ "$FIRSTUSER" != "S_USER" ]]; then
			# FIRSTUSER already exists and not S_USER so rename name, home, default group
			usermod -l "S_USER" "$FIRSTUSER"
			usermod -m -d "/home/S_USER" "S_USER"
			groupmod -n "S_USER" "$FIRSTUSER"
		else
			# $FIRSTUSER exists and is already S_USER (very unlikely!), so nothing to do
			:
		fi
	fi
	# Update password
	echo "S_USER:"'S_PWD' | chpasswd -e
	# sudo
	if [[ -f /etc/sudoers.d/010_pi-nopasswd ]]; then
		# Was sudo so update name
		sed -i "s/^$FIRSTUSER /S_USER /" /etc/sudoers.d/010_pi-nopasswd
	else
		# Was not sudo so make it so
		usermod -aG sudo S_USER
	fi
fi


###### WiFi
cat > /etc/wpa_supplicant/wpa_supplicant.conf <<'WPAEOF'
country=S_WIFICOUNTRY
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
ap_scan=1

update_config=1
network={
	ssid="S_SSID"
	psk=S_PSK
}

WPAEOF
chmod 600 /etc/wpa_supplicant/wpa_supplicant.conf
rfkill unblock wifi
for filename in /var/lib/systemd/rfkill/*:wlan ; do
	echo 0 > $filename
done


###### Locale--jln added
# Locale from original RPi imager results in errors, this has been debugged
# from /use/bin/raspi-config (script)
LOCALE_LINE=S_LOCALE_LINE
export LC_ALL=C
export LANG=C
#LG="/etc/locale.gen"
NEW_LANG="$(echo ${LOCALE_LINE} | cut -f1 -d " ")"
echo "${LOCALE_LINE}" > /etc/locale.gen
update-locale --no-checks LANG
update-locale --no-checks "LANG=${NEW_LANG}"
dpkg-reconfigure -f noninteractive locales


##### Timezone
rm -f /etc/localtime
echo "S_TZ" >/etc/timezone
dpkg-reconfigure -f noninteractive tzdata


###### Keyboard
# In original RPi imager has errors
# Error: /usr/bin/ckbcomp: Can not find file "symbols/US" in any known directory (journalcrl -xe)
# Setting XBKLAYOUT="us" (lowercase) seems to fix
# Do this after setting locale above!
cat >/etc/default/keyboard <<'KBEOF'
XKBMODEL="pc105"
XKBLAYOUT=S_KBSYMBOLS
XKBVARIANT=""
XKBOPTIONS=""

KBEOF
dpkg-reconfigure -f noninteractive keyboard-configuration


###### Clean up
# firstrun.sh contains secrets so delete
rm -f /boot/firstrun.sh
# Remove systemd commands that execute firstrun.sh
sed -i 's| systemd.run.*||g' /boot/cmdline.txt

exit 0