installPi

#!/bin/bash

DEVICE=sdc
IMG=/home/psauleau/iso/2022-09-22-raspios-bullseye-armhf-lite.img
RSA=(
	/home/psauleau/.ssh/RSA/clients/id_rsa.banc.pub
	/home/psauleau/.ssh/RSA/other/id_rsa.DB.Rasp.Fhsonic.pub
)
HOST_NAME=test

# hotspot
WIFI_SSID=""
WIFI_PASS=""

#new user
USER_NAME="bob"
USER_PASS="pass"

OFF_BUTTON=14

NODE="no"
NODE_VERSION="16"

e=""

E="\e[31m" # error
N="\e[0m" # neutral


function usage ()
{
	echo "$0"
	echo "------------------------------------------"
	echo "scritp use to install new raspberry pi iso"
	echo " image with somme preconfig"
	echo "------------------------------------------"
	echo ""
	echo "usage : $0 [ -h ] \\"
	echo "    [ -i /path/to/image/file ] \\"
	echo "    [ -d /pas/to/device ] \\"
	echo "    [ -k /pasth/to/key1 [ /pasth/to/key2 [...]]] \\"
	echo "    [ -n [ -nV version ]] \\"
	echo "    [ -hN hostname ] \\"
	echo "    [ -wS SSID -wP PASS ] \\"
	echo "    [ -uN NAME ] \\"
	echo "    [ -uP PASS ]"
	echo ""
	echo "------------------------------------------"
	echo ""
	echo "h  | this windows"
	echo "i  | input iso file         | ${IMG}"
	echo "d  | device output          | ${DEVICE}"
	echo "k  | add RSA keys           | nb : ${#RSA[@]}"
	echo "n  | add nodeJs             | ${NODE}"
	echo "nV | nodeJs version         | ${NODE_VERSION}"
	echo "hN | hostname               | ${HOST_NAME}"
	echo "wS | hotspot wifi SSID      | ${WIFI_SSID}"
	echo "wP | hotspot wifi PASS      | ${WIFI_PASS}"
	echo "uN | user NAME              | ${USER_NAME}"
	echo "uP | user PASS              | ${USER_PASS}"
	echo "oB | off button gpio number | ${OFF_BUTTON}"

	exit 0
}

# parsing args
for arg in $@
do
	case $arg in
		-h)
			usage
			;;
		-i|-d|-k|-hN|-wS|-wP|-uN|-uP|-nV)
			last=$arg
			;;
		-t)
			set -v
			;;
		-n)
			NODE="y"
			;;
		*)
			case $last in
				-i)
					IMG=$arg
					last=""
					;;
				-d)
					DEVICE=$arg
					last=""
					;;
				-k)
					RSA+= $arg
					;;
				-hN)
					HOST_NAME=$arg
					last=""
					;;
				-wS)
					WIFI_SSID=$arg
					last=""
					;;
				-wP)
					WIFI_PASS=$arg
					last=""
					;;
				-uN)
					USER_NAME=$arg
					last=""
					;;
				-uP)
					USER_PASS=$arg
					last=""
					;;
				-nV)
					NODE_VERSION=$arg
					last=""
					;;
			esac
			;;
	esac
done


if [ "${DEVICE}" == "" ] || [ "${DEVICE}" == "/" ]; then
	echo -e "${E}error${N} : device invalid"
	exit 2
fi


${e} umount /dev/${DEVICE}* 2>/dev/null

echo "DD --> $(ls -lh ${IMG} | cut -d' ' -f5)"
${e} dd if=${IMG} of=/dev/${DEVICE} bs=4M status=progress
if [ $? -ne 0 ]; then
	echo -e "${E}error${N} : not done"
	exit 0
fi
sync

if [ $? -ne 0 ]; then
	echo exit
	exit
fi

${e} mkdir -p tmp

echo "BOOT"
${e} mount /dev/${DEVICE}1 tmp

# start ssh
echo "- add ssh"
${e} touch tmp/ssh

# add wifi
echo "- add wifi"
${e} cp res/wpa_supplicant.conf tmp/

if [ "${OFF_BUTTON}" != "" ]; then
	# add power off button
	echo "- add power off button"
	${e} echo "dtoverlay=gpio-shutdown,gpio_pin=${OFF_BUTTON},active_low=1,gpio_pull=up,debounce=200" >> tmp/config.txt
fi

if [ "${USER_NAME}" != "" ] && [ "${USER_PASS}" != "" ]; then
	# add newUser
	# https://www.raspberrypi.com/documentation/computers/configuration.html#configuring-a-user
	echo "- create user"
	${e} echo "${USER_NAME}:$(openssl passwd -6 ${USER_PASS})" > tmp/userconf.txt
	cat tmp/userconf.txt
fi

sync ; sleep 1
echo "DONE"
${e} umount tmp



echo "ROOTFS"
${e} mount /dev/${DEVICE}2 tmp

# create start script
echo "- start script"
${e} echo "#!/bin/sh" > tmp/root/startScript.sh
${e} chmod +x tmp/root/startScript.sh
${e} echo "ping 1.1.1.1 -c 1"  >> tmp/root/startScript.sh
${e} echo "[ $? != 0 ] && exit 0" >> tmp/root/startScript.sh
${e} echo "sudo apt update" >> tmp/root/startScript.sh
${e} echo "sudo apt upgrade" >> tmp/root/startScript.sh

# add network config
echo "- network"
${e} cp res/sshd_config tmp/etc/ssh/
${e} cp res/wlan0.cfg tmp/etc/network/interfaces.d/
${e} cp res/eth0.cfg tmp/etc/network/interfaces.d/

# ssh keys
echo "- ssh keys"
${e} mkdir -p tmp/root/.ssh/RSA/server/

if [ ! -f tmp/root/.ssh/authorized_keys ]; then
	${e} touch tmp/root/.ssh/authorized_keys
fi

for KEY in ${RSA[@]}
do
	echo "  - ${KEY}"
	${e} cp ${KEY} tmp/root/.ssh/RSA/server/
	${e} echo "# ${KEY}" >> tmp/root/.ssh/authorized_keys
	${e} cat ${KEY} >> tmp/root/.ssh/authorized_keys
done
${e} echo "cp -r /root/.ssh /home/${USER_NAME}/" >> tmp/root/startScript.sh

# change hostname
echo "- host name"
${e} echo "${HOST_NAME}" > tmp/etc/hostname
${e} echo "127.0.0.1 ${HOST_NAME}" >> tmp/etc/hosts

# add hotspot if no network
if [ "WIFI_PASS" != "" ] && [ "WIFI_SSID" != "" ]; then
	echo "- hotspot"
	if [ ${#WIFI_PASS} -lt 8 ]; then
		echo -e "${E}merror${N} : WIFI pass length must be 8-32"
	fi
	echo "- add update on boot"
	${e} echo "apt -y install hostapd dnsmasq" >> tmp/root/startScript.sh
	${e} echo "systemctl unmask hostapd" >> tmp/root/startScript.sh
	${e} echo "systemctl disable hostapd" >> tmp/root/startScript.sh
	${e} echo "systemctl disable dnsmasq" >> tmp/root/startScript.sh
	
	echo "- hostapd conf"
	${e} mkdir -p tmp/etc/hostapd/
	${e} cp res/hostapd.conf tmp/etc/hostapd/
	${e} echo "ssid=${WIFI_SSID}" >> tmp/etc/hostapd/hostapd.conf
	${e} echo "wpa_passphrase=${WIFI_PASS}" >> tmp/etc/hostapd/hostapd.conf
	
	${e} cp res/dnsmasq.conf tmp/root/
	${e} echo "mv /root/dnsmasq.conf /etc/" >> tmp/root/startScript.sh

	${e} echo "nohook wpa_supplicant" >> tmp/etc/dhcpcd.conf
	
	# add and enable auto hotspot service
	echo "- hotspot service"
	${e} cp res/autohotspot.service tmp/etc/systemd/system/
	${e} echo "systemctl enable autohotspot.service" >> tmp/root/startScript.sh
	
	${e} cp res/autohotspot.sh tmp/usr/bin/
	${e} chmod +x tmp/usr/bin/autohotspot.sh
fi

if [ "${NODE}" == "y" ]; then
	echo "- nodejs ${NODE_VERSION}"
	${e} echo "apt install curl" >> tmp/root/startScript.sh
	${e} echo "curl -sL https://deb.nodesource.com/setup_${NODE_VERSION}.x | sudo bash -" >> tmp/root/startScript.sh
	${e} echo "apt install nodejs" >> tmp/root/startScript.sh
fi

echo "- add clean start script"
${e} echo "rm \$0" >> tmp/root/startScript.sh

echo "- rc.local"
${e} cat tmp/etc/rc.local | grep -v -E "^exit 0$" > tmp/etc/rc.local2
${e} mv tmp/etc/rc.local2 tmp/etc/rc.local
${e} chmod +x tmp/etc/rc.local
${e} echo "[ -f /root/startScript.sh ] && /root/startScript.sh" >> tmp/etc/rc.local
${e} echo "exit 0" >> tmp/etc/rc.local

sync ; sleep 1
echo "DONE"
${e} umount tmp

echo "accessible on "
echo "ssh ${USER_NAME}@${HOST_NAME}.local -i $(echo ${RSA[0]} | rev | cut -d'.' -f2- | rev)"

exit 0