Add apt cleanup to reduce image size

2024-03-15-raspios-bookworm-arm64-lite.img.xz.sha256

@@ -1 +0,0 @@
-58a3ec57402c86332e67789a6b8f149aeeb4e7bb0a16c9388a66ea6e07012e45  2024-03-15-raspios-bookworm-arm64-lite.img.xz

README.md

@@ -3,7 +3,6 @@ N-AnotterKiosk (Not-AnotterKiosk)
 
 ### I have hacked this about alot from the main branch, mainly Raspberry Pi changes
 
-- Removed x86 support
 - Added scheduled screen on/off
 - Added scheduled chrome page refresh
 - Rpi3 Overclock settings

build_raspberry_pi.sh

@@ -15,16 +15,13 @@ sudo mkdir -p "${BUILD_DIR}"
 # download a modern RaspiOS build
 if [ ! -f raspios.img.xz ]
 then
-	wget -O raspios.img.xz "https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2024-03-15/2024-03-15-raspios-bookworm-arm64-lite.img.xz"
+	wget -O raspios.img.xz "https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2023-05-03/2023-05-03-raspios-bullseye-arm64-lite.img.xz"
-	wget -O raspios.img.xz.sha256 "https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2024-03-15/2024-03-15-raspios-bookworm-arm64-lite.img.xz.sha256"
+	echo "bf982e56b0374712d93e185780d121e3f5c3d5e33052a95f72f9aed468d58fa7 raspios.img.xz" | sha256sum --check --status
-	sed -i 's/2024-03-15-raspios-bookworm-arm64-lite.img.xz/raspios.img.xz/g' raspios.img.xz.sha256
-	sha256sum --check --status raspios.img.xz.sha256
 	if [ $? -ne 0 ]
 	then
 	    echo "downloaded raspios does not match checksum";
-	    exit -1;
+	    return -1;
 	fi
-	rm raspios.img.xz.sha256
 fi
 
 rm -f raspios.img
@@ -46,11 +43,8 @@ sudo mount /dev/loop0p2 "${BUILD_DIR}"
 sudo mount /dev/loop0p1 "${BUILD_DIR}/boot"
 
 # Copy the (raspberry pi-specific) skeleton files
-sudo rsync -rl --exclude ".DS_Store" --exclude "boot" "${SCRIPT_DIR}/raspberry_pi_skeleton/." "${BUILD_DIR}"
+sudo rsync -a "${SCRIPT_DIR}/raspberry_pi_skeleton/." "${BUILD_DIR}"
-sudo rsync -rl --exclude ".DS_Store" "${SCRIPT_DIR}/kiosk_skeleton/." "${BUILD_DIR}/kiosk_skeleton"
+sudo rsync -a "${SCRIPT_DIR}/kiosk_skeleton/." "${BUILD_DIR}/kiosk_skeleton"
-sudo cp "${SCRIPT_DIR}/raspberry_pi_skeleton/boot/config.txt" "${BUILD_DIR}/boot/config.txt"
-sudo cp "${SCRIPT_DIR}/raspberry_pi_skeleton/boot/ssh" "${BUILD_DIR}/boot/ssh"
-sudo sed -i '$ s/$/ logo.nologo consoleblank=0 loglevel=0 quiet/' "${BUILD_DIR}/boot/cmdline.txt"
 
 # Make fstab read-only
 sed -i 's/vfat    defaults/vfat    ro,defaults/g' "${BUILD_DIR}/etc/fstab"
@@ -65,10 +59,14 @@ sudo mount proc -t proc -o nosuid,noexec,nodev "${BUILD_DIR}/proc/"
 sudo mount sys -t sysfs -o nosuid,noexec,nodev,ro "${BUILD_DIR}/sys/"
 sudo mount devpts -t devtmpfs -o mode=0755,nosuid "${BUILD_DIR}/dev/"
 
+# Raspbian currently ships only Debian 11. Let's upgrade to 12.
+sudo chroot "${BUILD_DIR}" /raspberry_pi_bullseye.sh
+
 # and then actually install everything.
 sudo chroot "${BUILD_DIR}" /kiosk_skeleton/build.sh
 
 sudo rm -r "${BUILD_DIR}/kiosk_skeleton"
+sudo rm "${BUILD_DIR}/raspberry_pi_bullseye.sh"
 
 cp "${BUILD_DIR}/version-info" version-info
 

kiosk_skeleton/build.sh

@@ -2,6 +2,7 @@
 # This script is being run on the target debian platform
 
 apt update
+APT_LISTCHANGES_FRONTEND=none DEBIAN_FRONTEND=noninteractive apt dist-upgrade -y
 DEBIAN_FRONTEND=noninteractive apt install -y lightdm openbox nginx php-fpm php-cli chromium autossh unclutter x11-xserver-utils xdotool htop nano openssh-server rsync x11vnc lm-sensors ntpdate scrot wireless-regdb fontconfig
 
 rsync -a --chown=root:root "/kiosk_skeleton/." "/"
@@ -69,7 +70,6 @@ systemctl disable avahi-daemon || true
 systemctl disable bluetooth || true
 
 systemctl enable kiosk-ssh-keys
-systemctl enable NetworkManager
 systemctl enable kiosk-wifi
 systemctl enable kiosk-autossh
 systemctl enable kiosk-watchdog
@@ -92,15 +92,10 @@ apt install -y hyperion
 # Run Hyperion as the 'pi' user
 mkdir -p /etc/systemd/system/hyperiond.service.d
 echo -e "[Service]\nUser=pi\nGroup=pi" > /etc/systemd/system/hyperiond.service.d/override.conf
-mkdir -p /var/lib/hyperion
+chown -R pi:pi /var/lib/hyperion || true
-mkdir -p /etc/hyperion
-chown -R pi:pi /var/lib/hyperion
 chown -R pi:pi /etc/hyperion
 usermod -a -G video pi
 
-# clean up apt cache to reduce image size
-apt clean
-
 # generate a version info/build info file
 echo -n "Chromium version: " >> /version-info
 dpkg --list | grep "ii  chromium " >> /version-info
@@ -108,3 +103,7 @@ dpkg --list | grep "ii  chromium " >> /version-info
 echo -n "Linux kernel version: " >> /version-info
 ls /lib/modules/  | sort -r | head -n 1 >> /version-info
 echo >> /version-info
+
+# Clean up apt cache and remove unused packages
+apt-get clean
+apt-get autoremove -y

kiosk_skeleton/etc/systemd/system/kiosk-wifi.service

@@ -1,7 +1,6 @@
 [Unit]
-Description=Configure WiFi from kioskbrowser.ini
+Description=Generate wpa_supplicant.conf from kioskbrowser.ini
-Requires=NetworkManager.service
+Before=wpa_supplicant.service dhcpcd.service
-After=NetworkManager.service
 
 [Service]
 Type=oneshot

kiosk_skeleton/usr/bin/kiosk-wifi

@@ -1,15 +1,27 @@
 #!/bin/bash
 
+if [ -f "/boot/wpa_supplicant.conf" ]; then
+	ln -s /boot/wpa_supplicant.conf /tmp/wpa_supplicant.conf
+	exit
+fi
+
 WIFI_SSID=$(get-ini /boot/kioskbrowser.ini wifi ssid)
 WIFI_PSK=$(get-ini /boot/kioskbrowser.ini wifi psk)
 WIFI_COUNTRY=$(get-ini /boot/kioskbrowser.ini wifi country)
 
-if [ -n "${WIFI_COUNTRY}" ]
-then
-    nmcli general reload conf-only
-fi
-
 if [ -n "${WIFI_SSID}" ]
 then
-    nmcli device wifi connect "${WIFI_SSID}" password "${WIFI_PSK}" || true
+	echo "country=${WIFI_COUNTRY}" > /tmp/wpa_supplicant.conf
+	echo "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev" >> /tmp/wpa_supplicant.conf
+	echo "update_config=1" >> /tmp/wpa_supplicant.conf
+	echo "network={" >> /tmp/wpa_supplicant.conf
+	echo "	ssid=\"${WIFI_SSID}\"" >> /tmp/wpa_supplicant.conf
+	if [ -n "${WIFI_PSK}" ]
+	then
+		echo "	psk=\"${WIFI_PSK}\"" >> /tmp/wpa_supplicant.conf
+	else
+		echo "	key_mgmt=NONE" >> /tmp/wpa_supplicant.conf
+	fi
+	echo "}" >> /tmp/wpa_supplicant.conf
 fi
+

kiosk_skeleton/var/www/html/index.php

@@ -1,4 +1,5 @@
 <h1>Kioskbrowser</h1>
+<h2>Version: <?php echo exec('git describe --tags --abbrev=0'); ?></h2>
 
 CPU temperature: <br>
 <?php passthru("sudo vcgencmd measure_temp"); ?>

raspberry_pi_skeleton/raspberry_pi_bullseye.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+echo > /etc/apt/sources.list
+echo "deb http://deb.debian.org/debian bookworm main contrib non-free" >> /etc/apt/sources.list
+echo "deb http://security.debian.org/debian-security bookworm-security main contrib non-free" >> /etc/apt/sources.list
+echo "deb http://deb.debian.org/debian bookworm-updates main contrib non-free" >> /etc/apt/sources.list
+
+apt update
+APT_LISTCHANGES_FRONTEND=none DEBIAN_FRONTEND=noninteractive apt -o Dpkg::Options::="--force-confold" -f -y dist-upgrade
+
+# This step is a bit risky, as the current kernel in https://github.com/raspberrypi/rpi-firmware might
+# be less tested as the currently shipping kernel in the Raspberry Pi images.
+apt install -y rpi-update
+SKIP_CHECK_PARTITION=1 SKIP_WARNING=1 rpi-update