#!/bin/bash

#############################################################################
# FPP Install Script
#
# This is a quick and dirty script to take a stock OS build and install FPP
# onto it for use in building FPP images or setting up a development system.
#
# The script will automatically setup the system for the development
# version of FPP, the system can then be switched to a new version number
# or git branch for release.
#
#############################################################################
# To use this script, download the latest copy from github and run it as
# root on the system where you want to install FPP:
#
# wget -O ./FPP_Install.sh https://raw.githubusercontent.com/FalconChristmas/fpp/master/SD/FPP_Install.sh
# chmod 700 ./FPP_Install.sh
# su
# ./FPP_Install.sh
#
#############################################################################
# NOTE: This script is used to build the SD images for FPP releases.  Its
#       main goal is to prep these release images.  It may be used for othe
#       purposes, but it is not our main priority to keep FPP working on
#       other Linux distributions or distribution versions other than those
#       we base our FPP releases on.  Currently, FPP images are based on the
#       following OS images for the Raspberry Pi and BeagleBone Black:
#
#       Raspberry Pi
#           - URL: https://www.raspberrypi.org/downloads/
#           - Image
#             - 2020-08-20-raspbian-buster-lite.zip
#           - Login/Password
#             - pi/raspberry
#
#       BeagleBone Black
#           - URL: https://debian.beagleboard.org/images/2020-04-06/buster-console/
#           - Images
#             - bone-debian-10.5-console-armhf-2020-08-31-1gb.img.xz
#           - Login/Password
#             - debian/temppwd
#
#       Other OS images may work with this install script and FPP on the
#       Pi and BBB platforms, but these are the images we are currently
#       targetting for support.
#
#############################################################################
# Other platforms which may be functioning:
#
# NOTE: FPP Development is based on the latest *bian Buster images, so
#       hardware which does not support Buster may have issues.
#
#############################################################################
SCRIPTVER="4.4"
FPPBRANCH=${FPPBRANCH:-"master"}
FPPIMAGEVER="4.4"
FPPCFGVER="63"
FPPPLATFORM="UNKNOWN"
FPPDIR=/opt/fpp
FPPUSER=fpp
FPPHOME=/home/${FPPUSER}
OSVER="UNKNOWN"

# Make sure the sbin directories are on the path as we will
# need the adduser/addgroup/ldconfig/a2enmod/etc... commands
PATH=$PATH:/usr/sbin:/sbin

#############################################################################
# Some Helper Functions
#############################################################################
# Check local time against U.S. Naval Observatory time, set if too far out.
# This function was copied from /opt/fpp/scripts/functions in FPP source
# since we don't have access to the source until we clone the repo.
checkTimeAgainstUSNO () {
	# www.usno.navy.mil is not pingable, so check github.com instead
	ping -q -c 1 github.com > /dev/null 2>&1

	if [ $? -eq 0 ]
	then
		echo "FPP: Checking local time against U.S. Naval Observatory"

		# allow clocks to differ by 24 hours to handle time zone differences
		THRESHOLD=86400
		USNOSECS=$(wget --timeout=10 --tries=1 -q -O - http://www.usno.navy.mil/cgi-bin/time.pl | sed -e "s/.*\">//" -e "s/<\/t.*//" -e "s/...$//")

        if [ "x${USNOSECS}" != "x" ]
        then

            LOCALSECS=$(date +%s)
            MINALLOW=$(expr ${USNOSECS} - ${THRESHOLD})
            MAXALLOW=$(expr ${USNOSECS} + ${THRESHOLD})

            #echo "FPP: USNO Secs  : ${USNOSECS}"
            #echo "FPP: Local Secs : ${LOCALSECS}"
            #echo "FPP: Min Valid  : ${MINALLOW}"
            #echo "FPP: Max Valid  : ${MAXALLOW}"

            echo "FPP: USNO Time  : $(date --date=@${USNOSECS})"
            echo "FPP: Local Time : $(date --date=@${LOCALSECS})"

            if [ ${LOCALSECS} -gt ${MAXALLOW} -o ${LOCALSECS} -lt ${MINALLOW} ]
            then
                echo "FPP: Local Time is not within 24 hours of USNO time, setting to USNO time"
                date $(date --date="@${USNOSECS}" +%m%d%H%M%Y.%S)

                LOCALSECS=$(date +%s)
                echo "FPP: New Local Time: $(date --date=@${LOCALSECS})"
            else
                echo "FPP: Local Time is OK"
            fi
		else
			echo "FPP: Incorrect result or timeout from query to U.S. Naval Observatory"
        fi
	else
		echo "FPP: Not online, unable to check time against U.S. Naval Observatory."
	fi
}

#############################################################################
# Gather some info about our system
. /etc/os-release
OSID=${ID}
OSVER="${ID}_${VERSION_ID}"

if [ "x${PRETTY_NAME}" = "x" ]
then
	echo "ERROR: /etc/os-release does not exist, will not install"
	exit
fi

if [ "x${OSID}" = "x" ]
then
	echo "ERROR: /etc/os-release does not contain OS ID, will not install"
	exit
fi

# Parse build options as arguments
clone_fpp=true
build_vlc=true
skip_apt_install=false
desktop=true
isimage=false;

while [ -n "$1" ]; do
	case $1 in
		--skip-clone)
			clone_fpp=false
			shift
			;;
		--skip-vlc)
			build_vlc=false
			shift
			;;
		--skip-apt-install)
			skip_apt_install=true
			shift
			;;
		--img)
			desktop=false
            isimage=true
			shift
			;;
		*)
			echo "Unknown option $1" >&2
			exit 1
			;;
	esac
done

# Attempt to detect the platform we are installing on
if [ "x${OSID}" = "xraspbian" ]
then
	FPPPLATFORM="Raspberry Pi"
	OSVER="debian_${VERSION_ID}"
elif [ "x${VARIANT}" = "xDebian on C.H.I.P" ]; then
	FPPPLATFORM="CHIP"
elif [ -e "/sys/class/leds/beaglebone:green:usr0" ]
then
	FPPPLATFORM="BeagleBone Black"
elif [ ! -z "$(grep ODROIDC /proc/cpuinfo)" ]
then
	FPPPLATFORM="ODROID"
elif [ ! -z "$(grep sun50iw1p1 /proc/cpuinfo)" ]
then
	FPPPLATFORM="Pine64"
elif [ ! -z "$(grep sun8i /proc/cpuinfo)" ]
then
	FPPPLATFORM="OrangePi"
elif [ "x${OSID}" = "xdebian" ]
then
	FPPPLATFORM="Debian"
elif [ "x${OSID}" = "xubuntu" ]
then
	FPPPLATFORM="Ubuntu"
elif [ "x${OSID}" = "xfedora" ]
then
    FPPPLATFORM="Fedora"
else
	FPPPLATFORM="UNKNOWN"
fi

checkTimeAgainstUSNO

#############################################################################
echo "============================================================"
echo "$0 v${SCRIPTVER}"
echo ""
echo "FPP Image Version: v${FPPIMAGEVER}"
echo "FPP Directory    : ${FPPDIR}"
echo "FPP Branch       : ${FPPBRANCH}"
echo "Operating System : ${PRETTY_NAME}"
echo "Platform         : ${FPPPLATFORM}"
echo "OS Version       : ${OSVER}"
echo "============================================================"
#############################################################################

echo ""
echo "Notes:"
echo "- Does this system have internet access to install packages and FPP?"
echo ""
echo "WARNINGS:"
echo "- This install expects to be run on a clean freshly-installed system."
echo "  The script is not currently designed to be re-run multiple times."
if $isimage; then
    echo "- This installer will take over your system.  It will disable any"
    echo "  existing 'pi' or 'debian' user and create a '${FPPUSER}' user.  If the system"
    echo "  has an empty root password, remote root login will be disabled."
fi
echo ""

echo -n "Do you wish to proceed? [N/y] "
read ANSWER
if [ "x${ANSWER}" != "xY" -a "x${ANSWER}" != "xy" ]
then
	echo
	echo "Install cancelled."
	echo
	exit
fi

STARTTIME=$(date)

#######################################
# Log output and notify user
echo "ALL output will be copied to FPP_Install.log"
exec > >(tee -a FPP_Install.log)
exec 2>&1
echo "========================================================================"
echo "FPP_Install.sh started at ${STARTTIME}"
echo "------------------------------------------------------------------------"

#######################################
# Remove old /etc/fpp if it exists
if [ -e "/etc/fpp" ]
then
	echo "FPP - Removing old /etc/fpp"
	rm -rf /etc/fpp
fi

#######################################
# Create /etc/fpp directory and contents
echo "FPP - Creating /etc/fpp and contents"
mkdir /etc/fpp
echo "${FPPPLATFORM}" > /etc/fpp/platform
echo "v${FPPIMAGEVER}" > /etc/fpp/rfs_version
echo "${FPPCFGVER}" > /etc/fpp/config_version
if $desktop; then
    echo "1" > /etc/fpp/desktop
else
# Bunch of configuration we wont do if installing onto desktop
# We shouldn't set the hostname or muck with the issue files, keyboard, etc...

#######################################
# Setting hostname
echo "FPP - Setting hostname"
echo "FPP" > /etc/hostname
hostname FPP

#######################################
# Add FPP hostname entry
echo "FPP - Adding 'FPP' hostname entry"
# Remove any existing 127.0.1.1 entry first
sed -i -e "/^127.0.1.1[^0-9]/d" /etc/hosts
echo "127.0.1.1       FPP" >> /etc/hosts

#######################################
# Update /etc/issue and /etc/issue.net
echo "FPP - Updating /etc/issue*"
head -1 /etc/issue.net > /etc/issue.new
cat >> /etc/issue.new <<EOF

Falcon Player OS Image v${FPPIMAGEVER}

EOF
cp /etc/issue.new /etc/issue.net
rm /etc/issue.new

head -1 /etc/issue > /etc/issue.new
cat >> /etc/issue.new <<EOF

Falcon Player OS Image v${FPPIMAGEVER}
My IP address: \4

FPP is configured from a web browser. Point your browser at http://\4 , http://fpp.local , or http://fpp .

EOF
cp /etc/issue.new /etc/issue
rm /etc/issue.new


#######################################
# Setup for U.S. users mainly
echo "FPP - Setting US keyboard layout and locale"
sed -i "s/XKBLAYOUT=".*"/XKBLAYOUT="us"/" /etc/default/keyboard
echo "LANG=en_US.UTF-8" > /etc/default/locale

# end of if desktop
fi


#######################################
# Make sure /opt exists
echo "FPP - Checking for existence of /opt"
cd /opt 2> /dev/null || mkdir /opt


#######################################
# Make sure dependencies are installed
# Set noninteractive install to skip prompt about restarting services
export DEBIAN_FRONTEND=noninteractive

case "${OSVER}" in
	debian_9 | debian_10 | ubuntu_20.04)
		case $FPPPLATFORM in
			'CHIP'|'BeagleBone Black')
				echo "FPP - Skipping non-free for $FPPPLATFORM"
				;;
			*)
				echo "FPP - Enabling non-free repo"
				sed -i -e "s/^deb \(.*\)/deb \1 non-free/" /etc/apt/sources.list
				sed -i -e "s/non-free\(.*\)non-free/non-free\1/" /etc/apt/sources.list
				;;
		esac


        #remove a bunch of packages that aren't neeeded, free's up space
        PACKAGE_REMOVE="nginx nginx-full nginx-common python3-numpy python3-opencv python3-pip python3-pkg-resources python3-scipy python3-setuptools python3-smbus\
            python3-werkzeug python3-click python3-colorama python3-decorator python3-dev python3-distro \
            python3-distutils python3-flask python3-itsdangerous python3-jinja2 python3-lib2to3 python3-libgpiod python3-markupsafe \
            gfortran glib-networking libxmuu1 xauth network-manager"
        if [ "$FPPPLATFORM" == "BeagleBone Black" ]; then
            PACKAGE_REMOVE="$PACKAGE_REMOVE roboticscape nodejs c9-core-installer \
                doc-beaglebone-getting-started bonescript bone101 bb-node-red-installer ardupilot-copter-bbbmini ardupilot-copter-blue \
                ardupilot-plane-bbbmini ardupilot-plane-blue ardupilot-rover-bbbmini ardupilot-rover-blue \
                ardupilot-copter-3.6-bbbmini ardupilot-copter-3.6-blue ardupilot-copter-3.6-pocket \
                ardupilot-rover-3.4-bbbmini ardupilot-rover-3.4-blue ardupilot-rover-3.4-pocket"
        fi
        if $desktop; then
            #don't remove anything from a desktop
            PACKAGE_REMOVE=""
        else
            echo "FPP - Marking unneeded packages for removal to save space"
            systemctl disable network-manager.service
        fi
        
        if $skip_apt_install; then
            PACKAGE_REMOVE=""
        fi
        if [ "x${PACKAGE_REMOVE}" != "x" ]; then
            apt-get remove -y --purge --autoremove --allow-change-held-packages ${PACKAGE_REMOVE}
        fi
        

		echo "FPP - Removing anything left that wasn't explicity removed"
		apt-get -y --purge autoremove

		echo "FPP - Updating package list"
		apt-get update

		echo "FPP - Upgrading apt if necessary"
		apt-get install --only-upgrade apt

		echo "FPP - Sleeping 5 seconds to make sure any apt upgrade is quiesced"
		sleep 5

		echo "FPP - Upgrading other installed packages"
		apt-get -y upgrade
  
        echo "FPP - Cleanup caches"
        apt-get -y clean
        apt-get -y --purge autoremove
        apt-get -y clean

		# remove gnome keyring module config which causes pkcs11 warnings
		# when trying to do a git pull
		rm -f /etc/pkcs11/modules/gnome-keyring-module

		echo "FPP - Installing required packages"
		# Install 10 packages, then clean to lower total disk space required

        PACKAGE_LIST="alsa-utils arping avahi-daemon avahi-utils locales nano net-tools \
                      apache2 apache2-bin apache2-data apache2-utils libapache2-mod-php \
                      bc bash-completion btrfs-progs exfat-fuse lsof ethtool curl zip unzip bzip2 wireless-tools dos2unix \
                      fbi fbset file flite ca-certificates lshw \
                      build-essential ffmpeg gcc g++ gdb ccache vim vim-common bison flex device-tree-compiler dh-autoreconf \
                      git git-core hdparm i2c-tools ifplugd less sysstat tcpdump time usbutils usb-modeswitch \
                      samba rsync connman sudo shellinabox dnsmasq hostapd vsftpd ntp sqlite3 at haveged samba samba-common-bin \
                      mp3info mailutils dhcp-helper parprouted bridge-utils libiio-utils \
                      php php-cli php-common php-curl php-pear php-sqlite3 php-zip php-xml \
                      libavcodec-dev libavformat-dev libswresample-dev libswscale-dev libavdevice-dev libavfilter-dev libtag1-dev \
                      vorbis-tools libgraphicsmagick++1-dev graphicsmagick-libmagick-dev-compat libmicrohttpd-dev \
                      libmosquitto-dev mosquitto-clients mosquitto libzstd-dev lzma zstd gpiod libgpiod-dev libjsoncpp-dev libcurl4-openssl-dev \
                      fonts-freefont-ttf flex bison pkg-config libasound2-dev"

        if [ "$FPPPLATFORM" == "Raspberry Pi" -o "$FPPPLATFORM" == "BeagleBone Black" ]; then
            PACKAGE_LIST="$PACKAGE_LIST firmware-realtek firmware-atheros firmware-ralink firmware-brcm80211 firmware-iwlwifi firmware-libertas firmware-zd1211 firmware-ti-connectivity python-daemon python-smbus"
        fi

        if $skip_apt_install; then
            PACKAGE_LIST=""
        else
            apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install ${PACKAGE_LIST}
        fi

        echo "FPP - Cleaning up after installing packages"
        apt-get -y clean


		echo "FPP - Installing libhttpserver 0.17.5"
		(cd /opt/ && git clone https://github.com/etr/libhttpserver && cd libhttpserver && git checkout 0.17.5 && ./bootstrap && mkdir build && cd build && ../configure --prefix=/usr && make && make install && cd /opt/ && rm -rf /opt/libhttpserver)

        echo "FPP - Configuring shellinabox to use /var/tmp"
        echo "SHELLINABOX_DATADIR=/var/tmp/" >> /etc/default/shellinabox
        sed -i -e "s/SHELLINABOX_ARGS.*/SHELLINABOX_ARGS=\"--no-beep -t\"/" /etc/default/shellinabox


		if [ -f /bin/systemctl ]
		then
			echo "FPP - Disabling unneeded/unwanted services"
			systemctl disable bonescript.socket
			systemctl disable bonescript-autorun.service
			systemctl disable console-kit-daemon.service
			systemctl disable cloud9.socket
		fi

        if $isimage; then
            echo "FPP - Disabling GUI"
            systemctl disable gdm
            systemctl disable gdm3
            systemctl disable lightdm
            systemctl disable wdm
            systemctl disable xdm
            systemctl disable display-manager.service
            
            echo "FPP - Disabling dhcp-helper and hostapd from automatically starting"
            systemctl disable dhcp-helper
            systemctl disable hostapd
        fi

		;;
	*)
		echo "FPP - Unknown distro"
		;;
esac

if [ ! -f "/usr/include/SDL2/SDL.h" ]; then
    # we don't want to "apt-get install libsdl2-dev" as that brings in wayland, a bunch
    # of X libraries, mesa, some OpenGL libs, etc... A bunch of things we DON'T need
    # Thus, we'll grab the .deb file, modify it to remove those deps, and install
    echo "FPP - Installing SDL2"
    cd /tmp
    apt-get download libsdl2-dev
    mkdir deb
    dpkg-deb -R ./libsdl2*.deb  deb
    sed -i -e "s/Version\(.*\)+\(.*\)/Version\1~fpp/g" deb/DEBIAN/control
    sed -i -e "s/Depends: \(.*\)/Depends: libsdl2-2.0-0, libasound2-dev, libdbus-1-dev, libsndio-dev, libudev-dev/g" deb/DEBIAN/control
    dpkg-deb -b deb ./libsdl2-dev.deb
    apt -y install ./libsdl2-dev.deb
    apt-mark hold libsdl2-dev
    apt-get clean
fi
 
#######################################
# Platform-specific config
case "${FPPPLATFORM}" in
	'BeagleBone Black')
        echo "blacklist spidev" > /etc/modprobe.d/blacklist-spidev.conf
        echo "# allocate 3M instead of the default 256K" > /etc/modprobe.d/uio_pruss.conf
        echo "options uio_pruss extram_pool_sz=3145728" >> /etc/modprobe.d/uio_pruss.conf

        # need to blacklist the gyroscope and barometer on the SanCloud enhanced or it consumes some pins
        echo "blacklist st_pressure_i2c" > /etc/modprobe.d/blacklist-gyro.conf
        echo "blacklist st_pressure" >> /etc/modprobe.d/blacklist-gyro.conf
        echo "blacklist inv_mpu6050_i2c" >> /etc/modprobe.d/blacklist-gyro.conf
        echo "blacklist st_sensors_i2c" >> /etc/modprobe.d/blacklist-gyro.conf
        echo "blacklist inv_mpu6050" >> /etc/modprobe.d/blacklist-gyro.conf
        echo "blacklist st_sensors" >> /etc/modprobe.d/blacklist-gyro.conf

        # need to blacklist the bluetooth on BBG Gateway or it tends to crash the kernel, we don't need it
        echo "blacklist bluetooth" > /etc/modprobe.d/blacklist-bluetooth.conf
        echo "blacklist hci_uart" >> /etc/modprobe.d/blacklist-bluetooth.conf
        echo "blacklist bnep" >> /etc/modprobe.d/blacklist-bluetooth.conf
        
        # we will need the PRU's, we might as well bring them up immediately for faster boot
        echo "pruss_soc_bus" >> /etc/modules-load.d/modules.conf
        echo "pru_rproc" >> /etc/modules-load.d/modules.conf
        echo "pruss" >> /etc/modules-load.d/modules.conf
        echo "irq_pruss_intc" >> /etc/modules-load.d/modules.conf
        echo "remoteproc" >> /etc/modules-load.d/modules.conf
		;;

	'Raspberry Pi')
		echo "FPP - Updating firmware for Raspberry Pi install"
        sudo apt-get dist-upgrade -y

		echo "FPP - Installing Pi-specific packages"
		apt-get -y install raspi-config

        echo "FPP - Install kernel headers so modules can be compiled later"
        apt-get -y install raspberrypi-kernel-headers

        if $isimage; then
            echo "FPP - Disabling dhcpcd"
            systemctl disable dhcpcd.service

            echo "FPP - Configuring connman"
            mv /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.orig
            mkdir /etc/connman
            chmod 755 /etc/connman

            cat <<-EOF > /var/lib/connman/settings
[global]
OfflineMode=false

[WiFi]
Enable=true
Tethering=false

[Bluetooth]
Enable=false
Tethering=false

[Wired]
Enable=true
Tethering=false
EOF

cat <<-EOF >> /etc/connman/main.conf
[General]
PreferredTechnologies=wifi,ethernet
SingleConnectedTechnology=false
AllowHostnameUpdates=false
PersistentTetheringMode=true
EOF

            echo "FPP - Disabling stock users (pi, odroid, debian), use the '${FPPUSER}' user instead"
            sed -i -e "s/^pi:.*/pi:*:16372:0:99999:7:::/" /etc/shadow
            sed -i -e "s/^odroid:.*/odroid:*:16372:0:99999:7:::/" /etc/shadow
            sed -i -e "s/^debian:.*/debian:*:16372:0:99999:7:::/" /etc/shadow

            echo "FPP - Disabling auto mount of USB drives"
            sed -i -e "s/ENABLED=1/ENABLED=0/" /etc/usbmount/usbmount.conf 2> /dev/null

            echo "FPP - Disabling the hdmi force hotplug setting"
            sed -i -e "s/hdmi_force_hotplug/#hdmi_force_hotplug/" /boot/config.txt

            echo "FPP - Disabling the VC4 OpenGL driver"
            sed -i -e "s/dtoverlay=vc4-fkms-v3d/#dtoverlay=vc4-fkms-v3d/" /boot/config.txt

            echo "FPP - Enabling SPI in device tree"
            echo >> /boot/config.txt

            echo "# Enable SPI in device tree" >> /boot/config.txt
            echo "dtparam=spi=on" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "FPP - Updating SPI buffer size and enabling HDMI audio devices"
            sed -i 's/$/ spidev.bufsiz=102400 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_compat_alsa=1/' /boot/cmdline.txt

            echo "FPP - Updating root partition device"
            sed -i 's/root=PARTUUID=[A-Fa-f0-9-]* /root=\/dev\/mmcblk0p2 /g' /boot/cmdline.txt
            sed -i 's/PARTUUID=[A-Fa-f0-9]*-01/\/dev\/mmcblk0p1/g' /etc/fstab
            sed -i 's/PARTUUID=[A-Fa-f0-9]*-02/\/dev\/mmcblk0p2/g' /etc/fstab

            echo "FPP - Disabling fancy network interface names"
            sed -e 's/rootwait/rootwait net.ifnames=0 biosdevname=0/' /boot/cmdline.txt

            echo "# Enable I2C in device tree" >> /boot/config.txt
            echo "dtparam=i2c_arm=on,i2c_arm_baudrate=400000" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "# Setting kernel scaling framebuffer method" >> /boot/config.txt
            echo "scaling_kernel=8" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "# Enable audio" >> /boot/config.txt
            echo "dtparam=audio=on" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "# Allow more current through USB" >> /boot/config.txt
            echo "max_usb_current=1" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "# Setup UART clock to allow DMX output" >> /boot/config.txt
            echo "init_uart_clock=16000000" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "# Swap Pi 3 and Zero W UARTs with BT" >> /boot/config.txt
            echo "dtoverlay=pi3-miniuart-bt" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "dtoverlay=dwc2" >> /boot/config.txt
            echo >> /boot/config.txt

            echo "# GPU memory set to 128 to deal with error in omxplayer with hi-def videos" >> /boot/config.txt
            echo "[pi4]" >> /boot/config.txt
            echo "gpu_mem=128" >> /boot/config.txt
            echo "[pi3]" >> /boot/config.txt
            echo "gpu_mem=128" >> /boot/config.txt
            echo "[pi0]" >> /boot/config.txt
            echo "gpu_mem=64" >> /boot/config.txt
            echo "[pi1]" >> /boot/config.txt
            echo "gpu_mem=64" >> /boot/config.txt
            echo "[pi2]" >> /boot/config.txt
            echo "gpu_mem=64" >> /boot/config.txt
            echo "" >> /boot/config.txt
            echo "[all]" >> /boot/config.txt
            echo "" >> /boot/config.txt

            echo "FPP - Freeing up more space by removing unnecessary packages"
            apt-get -y purge wolfram-engine sonic-pi minecraft-pi
            apt-get -y --purge autoremove

            echo "FPP - Make things cleaner by removing configuration from unnecessary packages"
            dpkg --get-selections | grep deinstall | while read package deinstall; do
                apt-get -y purge $package
            done

            echo "FPP - Disabling Swap to save SD card"
            systemctl disable dphys-swapfile

            echo "FPP - Kernel doesn't support cgroups so remove to silence warnings on boot"
            update-rc.d -f cgroup-bin remove

            echo "FPP - Remove dhcpcd since we start DHCP interfaces on our own"
            update-rc.d -f dhcpcd remove

            echo "FPP - Setting locale"
            sed -i 's/^\(en_GB.UTF-8\)/# \1/;s/..\(en_US.UTF-8\)/\1/' /etc/locale.gen
            locale-gen en_US.UTF-8
            dpkg-reconfigure --frontend=noninteractive locales
            export LANG=en_US.UTF-8

            echo "FPP - Fix ifup/ifdown scripts for manual dns"
            sed -i -n 'H;${x;s/^\n//;s/esac\n/&\nif grep -qc "Generated by fpp" \/etc\/resolv.conf\; then\n\texit 0\nfi\n/;p}' /etc/network/if-up.d/000resolvconf
            sed -i -n 'H;${x;s/^\n//;s/esac\n/&\nif grep -qc "Generated by fpp" \/etc\/resolv.conf\; then\n\texit 0\nfi\n\n/;p}' /etc/network/if-down.d/resolvconf

            cat <<-EOF > /etc/dnsmasq.d/usb.conf
interface=usb0
interface=usb1
port=53
dhcp-authoritative
domain-needed
bogus-priv
expand-hosts
cache-size=2048
dhcp-range=usb0,192.168.7.1,192.168.7.1,2m
dhcp-range=usb1,192.168.6.1,192.168.6.1,2m
listen-address=127.0.0.1
listen-address=192.168.7.2
listen-address=192.168.6.2
dhcp-option=usb0,3
dhcp-option=usb0,6
dhcp-option=usb1,3
dhcp-option=usb1,6
dhcp-leasefile=/var/run/dnsmasq.leases
EOF

            sed -i -e "s/^IGNORE_RESOLVCONF.*/IGNORE_RESOLVCONF=yes/g" /etc/default/dnsmasq
            sed -i -e "s/#IGNORE_RESOLVCONF.*/IGNORE_RESOLVCONF=yes/g" /etc/default/dnsmasq
            echo "DNSMASQ_EXCEPT=lo" >> /etc/default/dnsmasq

            echo "FPP - Removing extraneous blacklisted modules"
            rm -f /etc/modprobe.d/blacklist-rtl8192cu.conf
            rm -f /etc/modprobe.d/blacklist-rtl8xxxu.conf
        fi
        
		echo "FPP - Disabling getty on onboard serial ttyAMA0"
		if [ "x${OSVER}" == "xdebian_9" ] || [ "x${OSVER}" == "xdebian_10" ]; then
			systemctl disable serial-getty@ttyAMA0.service
			sed -i -e "s/console=serial0,115200 //" /boot/cmdline.txt
			sed -i -e "s/autologin pi/autologin ${FPPUSER}/" /etc/systemd/system/autologin@.service
		fi

		;;
	#TODO
	'CHIP')
		echo "FPP - Reinstall chip packages that were probably removed earlier from dependencies"
		for package in chip-exit chip-metapackage chip-configs chip-hwtest \
						chip-input-reset chip-power chip-theme
		do
			apt-get -y install ${package}
			let packages=$((${packages}+1))
			if [ $packages -gt 10 ]; then
				let packages=0
				apt-get -y clean
			fi
		done
		;;
	'ODROID')
		echo "FPP - Installing wiringPi"
		cd /opt/ && git clone https://github.com/hardkernel/wiringPi && cd /opt/wiringPi && ./build
		;;
	'Pine64')
		echo "FPP - Pine64"
		;;
	'Orange Pi')
		echo "FPP - Orange Pi"

		echo "FPP - Installing wiringOP (wiringPi port)"
		cd /opt/ && git clone https://github.com/zhaolei/WiringOP && cd /opt/WiringOP && ./build

		echo "FPP - Disabling stock users, use the '${FPPUSER}' user instead"
		sed -i -e "s/^orangepi:.*/orangepi:*:16372:0:99999:7:::/" /etc/shadow

		;;
	'Ununtu')
		echo "FPP - Ununtu"
		;;
	'Debian')
		echo "FPP - Debian"
		;;
	*)
		echo "FPP - Unknown platform"
		;;
esac

#######################################
# Clone git repository
cd /opt
if $clone_fpp; then

    #######################################
    # Remove old /opt/fpp if it exists
    if [ -e "/opt/fpp" ]
    then
        echo "FPP - Removing old /opt/fpp"
        rm -rf /opt/fpp
    fi

    echo "FPP - Cloning git repository into /opt/fpp"
    git clone https://github.com/FalconChristmas/fpp fpp
fi

#######################################
# Build VLC
if $build_vlc; then
    echo "FPP - Building VLC"
    cd /opt/fpp/SD
    ./buildVLC.sh
    rm -rf /opt/vlc/
fi


#######################################
# Switch to desired code branch
echo "FPP - Switching git clone to ${FPPBRANCH} branch"
cd /opt/fpp
git checkout ${FPPBRANCH}

#######################################
# Upgrade the config if needed
sh scripts/upgrade_config -notee


#######################################
PHPDIR="/etc/php/7.3"
if [ -d "/etc/php/7.4" ]; then
    PHPDIR="/etc/php/7.4"
fi

echo "FPP - Allowing short tags in PHP"
FILES="cli/php.ini apache2/php.ini"
for FILE in ${FILES}
do
    if [ -f ${PHPDIR}/${FILE} ]; then
        sed -i -e "s/^short_open_tag.*/short_open_tag = On/" ${PHPDIR}/${FILE}
        sed -i -e "s/max_execution_time.*/max_execution_time = 1000/" ${PHPDIR}/${FILE}
        sed -i -e "s/max_input_time.*/max_input_time = 900/" ${PHPDIR}/${FILE}
        sed -i -e "s/default_socket_timeout.*/default_socket_timeout = 900/" ${PHPDIR}/${FILE}
        sed -i -e "s/post_max_size.*/post_max_size = 4G/" ${PHPDIR}/${FILE}
        sed -i -e "s/upload_max_filesize.*/upload_max_filesize = 4G/" ${PHPDIR}/${FILE}
        sed -i -e "s/;upload_tmp_dir =.*/upload_tmp_dir = \/home\/${FPPUSER}\/media\/upload/" ${PHPDIR}/${FILE}
        sed -i -e "s/^;max_input_vars.*/max_input_vars = 5000/" ${PHPDIR}/${FILE}
    fi
done

if $isimage; then
    #######################################
    echo "FPP - Copying rsync daemon config files into place"
    sed -e "s#FPPDIR#${FPPDIR}#g" -e "s#FPPHOME#${FPPHOME}#g" -e "s#FPPUSER#${FPPUSER}#g" < ${FPPDIR}/etc/rsync > /etc/default/rsync
    sed -e "s#FPPDIR#${FPPDIR}#g" -e "s#FPPHOME#${FPPHOME}#g" -e "s#FPPUSER#${FPPUSER}#g" < ${FPPDIR}/etc/rsyncd.conf > /etc/rsyncd.conf
fi

#######################################
# Add the ${FPPUSER} user and group memberships
echo "FPP - Adding ${FPPUSER} user"
addgroup --gid 500 ${FPPUSER}
adduser --uid 500 --home ${FPPHOME} --shell /bin/bash --ingroup ${FPPUSER} --gecos "Falcon Player" --disabled-password ${FPPUSER}
adduser ${FPPUSER} adm
adduser ${FPPUSER} sudo
case "${FPPPLATFORM}" in
	'Raspberry Pi'|'BeagleBone Black')
		adduser ${FPPUSER} spi
		adduser ${FPPUSER} gpio
		adduser ${FPPUSER} i2c
		;;
esac
adduser ${FPPUSER} video
adduser ${FPPUSER} audio
# FIXME, use ${FPPUSER} here instead of hardcoding
sed -i -e 's/^fpp:\*:/fpp:\$6\$rA953Jvd\$oOoLypAK8pAnRYgQQhcwl0jQs8y0zdx1Mh77f7EgKPFNk\/jGPlOiNQOtE.ZQXTK79Gfg.8e3VwtcCuwz2BOTR.:/' /etc/shadow

if $isimage; then
    echo "FPP - Disabling any stock 'debian' user, use the '${FPPUSER}' user instead"
    sed -i -e "s/^debian:.*/debian:*:16372:0:99999:7:::/" /etc/shadow
    
    #######################################
    echo "FPP - Fixing empty root passwd"
    sed -i -e 's/root::/root:*:/' /etc/shadow

    echo "FPP - Setting up ssh to disallow root login"
    sed -i -e "s/#PermitRootLogin .*/PermitRootLogin prohibit-password/" /etc/ssh/sshd_config
    sed -i -e "s/#\?Banner .*/Banner \/etc\/issue.net/g" /etc/ssh/sshd_config

    echo "FPP - Cleaning up /root/.cpanm to save space on the SD image"
    rm -rf /root/.cpanm
fi


#######################################
echo "FPP - Populating ${FPPHOME}"
mkdir ${FPPHOME}/.ssh
chown ${FPPUSER}.${FPPUSER} ${FPPHOME}/.ssh
chmod 700 ${FPPHOME}/.ssh

mkdir ${FPPHOME}/media
chown ${FPPUSER}.${FPPUSER} ${FPPHOME}/media
chmod 775 ${FPPHOME}/media

cat > ${FPPHOME}/.vimrc <<-EOF
set tabstop=4
set shiftwidth=4
set expandtab
set autoindent
set ignorecase
set mouse=r
EOF

chmod 644 ${FPPHOME}/.vimrc
chown ${FPPUSER}.${FPPUSER} ${FPPHOME}/.vimrc

echo >> ${FPPHOME}/.bashrc
echo ". /opt/fpp/scripts/common" >> ${FPPHOME}/.bashrc
echo >> ${FPPHOME}/.bashrc

mkdir ${FPPHOME}/media/logs
chown fpp.fpp ${FPPHOME}/media/logs

#######################################
# Configure log rotation
echo "FPP - Configuring log rotation"
cp /opt/fpp/etc/logrotate.d/* /etc/logrotate.d/
sed -i -e "s/#compress/compress/" /etc/logrotate.conf
sed -i -e "s/rotate .*/rotate 2/" /etc/logrotate.conf

#######################################
# Configure ccache
echo "FPP - Configuring ccache"
ccache -M 250M
ccache --set-config=temporary_dir=/tmp
ccache --set-config=sloppiness=pch_defines,time_macros

if $isimage; then
    #######################################
    echo "FPP - Configuring FTP server"
    sed -i -e "s/.*anonymous_enable.*/anonymous_enable=NO/" /etc/vsftpd.conf
    sed -i -e "s/.*local_enable.*/local_enable=YES/" /etc/vsftpd.conf
    sed -i -e "s/.*write_enable.*/write_enable=YES/" /etc/vsftpd.conf
    service vsftpd restart
fi

#######################################
echo "FPP - Configuring Samba"
cat <<-EOF >> /etc/samba/smb.conf

[FPP]
  comment = FPP Media Share
  path = ${FPPHOME}/media
  veto files = /._*/.DS_Store/
  delete veto files = yes
  writeable = Yes
  only guest = Yes
  create mask = 0777
  directory mask = 0777
  browseable = Yes
  public = yes
  force user = ${FPPUSER}

EOF

case "${OSVER}" in
	debian_9 |  debian_10 | ubuntu_20.04)
		systemctl restart smbd.service
		systemctl restart nmbd.service
		;;
esac


#######################################
# Fix sudoers to not require password
echo "FPP - Giving ${FPPUSER} user sudo"
echo "${FPPUSER} ALL=(ALL:ALL) NOPASSWD: ALL" >> /etc/sudoers


if $isimage; then
    #######################################
    # Setup mail
    echo "FPP - Updating exim4 config file"
    cat <<-EOF > /etc/exim4/update-exim4.conf.conf
# /etc/exim4/update-exim4.conf.conf
#
# Edit this file and /etc/mailname by hand and execute update-exim4.conf
# yourself or use 'dpkg-reconfigure exim4-config'
#
# Please note that this is _not_ a dpkg-conffile and that automatic changes
# to this file might happen. The code handling this will honor your local
# changes, so this is usually fine, but will break local schemes that mess
# around with multiple versions of the file.
#
# update-exim4.conf uses this file to determine variable values to generate
# exim configuration macros for the configuration file.
#
# Most settings found in here do have corresponding questions in the
# Debconf configuration, but not all of them.
#
# This is a Debian specific file
dc_eximconfig_configtype='smarthost'
dc_other_hostnames='fpp'
dc_local_interfaces='127.0.0.1'
dc_readhost=''
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost='smtp.gmail.com::587'
CFILEMODE='644'
dc_use_split_config='true'
dc_hide_mailname='false'
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'
EOF

    # remove exim4 panic log so exim4 doesn't throw an alert about a non-zero log
    # file due to some odd error thrown during inital setup
    rm /var/log/exim4/paniclog
    #update config and restart exim
    update-exim4.conf

    #######################################
    # Print notice during login regarding console access
    cat <<-EOF >> /etc/motd

                   _______  ___
                  / __/ _ \\/ _ \\
                 / _// ___/ ___/  Falcon Player
                /_/ /_/  /_/

This FPP console is for advanced users, debugging, and developers.  If
you aren't one of those, you're probably looking for the web-based GUI.

You can access the UI by typing "http://fpp.local/" into a web browser.
EOF

    #######################################
    # Config fstab to mount some filesystems as tmpfs
    echo "FPP - Configuring tmpfs filesystems"
    echo "#####################################" >> /etc/fstab
    echo "tmpfs         /tmp        tmpfs   nodev,nosuid,size=50M 0 0" >> /etc/fstab
    echo "tmpfs         /var/tmp    tmpfs   nodev,nosuid,size=50M 0 0" >> /etc/fstab
    echo "#####################################" >> /etc/fstab

    COMMENTED=""
    SDA1=$(lsblk -l | grep sda1 | awk '{print $7}')
    if [ -n ${SDA1} ]
    then
        COMMENTED="#"
    fi
    echo "${COMMENTED}/dev/sda1     ${FPPHOME}/media  auto    defaults,nonempty,noatime,nodiratime,exec,nofail,flush,uid=500,gid=500  0  0" >> /etc/fstab
    echo "#####################################" >> /etc/fstab

    #######################################
    #  Prefer IPv4
    echo "FPP - Prefer IPv4"
    echo "precedence ::ffff:0:0/96  100" >>  /etc/gai.conf

    # need to keep extra memory to process network packets
    echo "vm.min_free_kbytes=16384" >> /etc/sysctl.conf
fi

#######################################
echo "FPP - Configuring Apache webserver"

# Environment variables
sed -i -e "s/APACHE_RUN_USER=.*/APACHE_RUN_USER=${FPPUSER}/" /etc/apache2/envvars
sed -i -e "s/APACHE_RUN_GROUP=.*/APACHE_RUN_GROUP=${FPPUSER}/" /etc/apache2/envvars
sed -i -e "s#APACHE_LOG_DIR=.*#APACHE_LOG_DIR=${FPPHOME}/media/logs#" /etc/apache2/envvars
sed -i -e "s/Listen 8080.*/Listen 80/" /etc/apache2/ports.conf

sed -e "s#FPPDIR#${FPPDIR}#g" -e "s#FPPHOME#${FPPHOME}#g" < ${FPPDIR}/etc/apache2.site > /etc/apache2/sites-enabled/000-default.conf

# Enable Apache modules
a2enmod cgi
a2enmod rewrite
a2enmod proxy
a2enmod proxy_http
a2enmod proxy_html
a2enmod headers


# Fix name of Apache default error log so it gets rotated by our logrotate config
sed -i -e "s/error\.log/apache2-base-error.log/" /etc/apache2/apache2.conf

# Disable default access logs
rm /etc/apache2/conf-enabled/other-vhosts-access-log.conf

case "${OSVER}" in
	debian_9 |  debian_10 | ununtu_20.04)
		systemctl enable apache2.service
		;;
esac


if [ "x${FPPPLATFORM}" = "xBeagleBone Black" ]; then
    #######################################
    echo "FPP - Updating HotSpot"
    sed -i -e "s/USE_PERSONAL_SSID=.*/USE_PERSONAL_SSID=FPP/" /etc/default/bb-wl18xx
    sed -i -e "s/USE_PERSONAL_PASSWORD=.*/USE_PERSONAL_PASSWORD=Christmas/" /etc/default/bb-wl18xx
    
    systemctl disable dev-hugepages.mount

    echo "FPP - update BBB boot scripts for faster boot, don't force getty"
    cd /opt/scripts
    git reset --hard
    git pull
    sed -i 's/systemctl restart serial-getty/systemctl is-enabled serial-getty/g' boot/am335x_evm.sh
    git commit -a -m "delay getty start" --author='fpp<fpp>'
    
    if [ ! -f "/opt/source/bb.org-overlays/Makefile" ]; then
        mkdir -p /opt/source
        cd /opt/source
        git clone https://github.com/beagleboard/bb.org-overlays
    fi
    
    cd /opt/fpp/capes/drivers/bbb
    make
    make install
    make clean
    
    # install the newer pru code generator
    apt-get install ti-pru-cgt-installer
    
    #set the preferred tech
    sed -i -e "s/PreferredTechnologies\(.*\)/PreferredTechnologies=wifi,ethernet/" /etc/connman/main.conf

    #Set colored prompt
    sed -i -e "s/#force_color_prompt=yes/force_color_prompt=yes/" /home/fpp/.bashrc
    
    #adjust a bunch of settings in /boot/uEnv.txt
    sed -i -e "s+^#disable_uboot_overlay_video=\(.*\)+disable_uboot_overlay_video=1+g"  /boot/uEnv.txt
    sed -i -e "s+#uboot_overlay_addr0=\(.*\)+uboot_overlay_addr0=/lib/firmware/bbb-fpp-reserve-memory.dtbo+g"  /boot/uEnv.txt
    sed -i -e "s+#uboot_overlay_addr4=\(.*\)+uboot_overlay_addr4=/lib/firmware/AM335X-I2C2-400-00A0.dtbo+g"  /boot/uEnv.txt
    sed -i -e "s+#uboot_overlay_addr5=\(.*\)+uboot_overlay_addr5=/lib/firmware/AM335X-I2C1-400-00A0.dtbo+g"  /boot/uEnv.txt
    sed -i -e "s+ quiet+ quiet rootwait+g"  /boot/uEnv.txt
    sed -i -e "s+^uboot_overlay_pru=+#uboot_overlay_pru=+g"  /boot/uEnv.txt
    sed -i -e "s+#uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-19-TI-00A0.dtbo+uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-19-TI-00A0.dtbo+g" /boot/uEnv.txt
    sed -i -e "s+#uboot_overlay_pru=AM335X-PRU-RPROC-4-19-TI-00A0.dtbo+uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-19-TI-00A0.dtbo+g" /boot/uEnv.txt
    echo "bootdelay=0" >> /boot/uEnv.txt
    echo "#cmdline=init=/opt/fpp/SD/BBB-AutoFlash.sh" >> /boot/uEnv.txt
fi

if $isimage; then
    rm -rf /usr/share/doc/*
    apt-get clean
fi


#######################################
echo "FPP - Configuring FPP startup"
cp /opt/fpp/etc/systemd/*.service /lib/systemd/system/
if [ "$FPPPLATFORM" == "BeagleBone Black" ]; then
    # Beagles don't have hdmi/video out so no need to wait for getty before starting up
    sed -i -e "s/getty.target//g" /lib/systemd/system/fppd.service
fi

systemctl disable mosquitto
systemctl daemon-reload
systemctl enable fppinit.service
systemctl enable fppcapedetect.service
systemctl enable fpprtc.service
systemctl enable fppoled.service
systemctl enable fppd.service
systemctl enable fpp_postnetwork.service
systemctl enable rsync

if $isimage; then
    cp /opt/fpp/etc/update-RTC /etc/cron.daily
    
    echo "FPP - Disabling services not needed/used"
    systemctl disable connman-wait-online
fi


echo "FPP - Compiling binaries"
cd /opt/fpp/src/
make clean ; make optimized


######################################
if [ "$FPPPLATFORM" == "Raspberry Pi" -o "$FPPPLATFORM" == "BeagleBone Black" ]; then
    echo "FPP - Compiling WIFI drivers"
    cd /opt/fpp/SD
    bash ./FPP-Wifi-Drivers.sh
    rm -f /etc/modprobe.d/rtl8723bu-blacklist.conf
    
    sed -i 's/ExecStart.*/ExecStart=\/usr\/sbin\/connmand -n --nodnsproxy/g' /lib/systemd/system/connman.service

    # replace entry already there
    sed -i 's/^DAEMON_CONF.*/DAEMON_CONF="\/etc\/hostapd\/hostapd.conf"/g' /etc/default/hostapd
    if ! grep -q etc/hostapd/hostapd.conf "/etc/default/hostapd"; then
        # not there, append after the commented out default line
        sed -i 's/^#DAEMON_CONF\(.*\)/#DAEMON_CONF\1\nDAEMON_CONF="\/etc\/hostapd\/hostapd.conf"/g' /etc/default/hostapd
    fi
    if ! grep -q etc/hostapd/hostapd.conf "/etc/default/hostapd"; then
        # default line not there, just append to end of file
        echo "DAEMON_CONF=\"/etc/hostapd/hostapd.conf\"" >> /etc/default/hostapd
    fi

    sed -i 's/^NetworkInterfaceBlacklist.*/NetworkInterfaceBlacklist=SoftAp0,usb0,usb1/g' /etc/connman/main.conf
    if ! grep -q "^NetworkInterfaceBlacklist" "/etc/connman/main.conf"; then
        echo "NetworkInterfaceBlacklist=SoftAp0,usb0,usb1" >> /etc/connman/main.conf
    fi
    
    if $isimage; then

        systemctl enable dnsmasq
        systemctl unmask hostapd
    
        cd /etc
        rm resolv.conf
        ln -s /var/run/connman/resolv.conf .
    fi
fi

ENDTIME=$(date)

echo "========================================================="
echo "FPP Install Complete."
echo "Started : ${STARTTIME}"
echo "Finished: ${ENDTIME}"
echo "========================================================="
echo "You can reboot the system by changing to the '${FPPUSER} user with the"
echo "password 'falcon' and running the shutdown command."
echo ""
echo "su - ${FPPUSER}"
echo "sudo shutdown -r now"
echo ""
echo "NOTE: If you are prepping this as an image for release,"
echo "remove the SSH keys before shutting down so they will be"
echo "rebuilt during the next boot."
echo ""
echo "su - ${FPPUSER}"
echo "sudo rm -rf /etc/ssh/ssh_host*key*"
echo "sudo shutdown -r now"
echo "========================================================="
echo ""

cp /root/FPP_Install.* ${FPPHOME}/
chown fpp.fpp ${FPPHOME}/FPP_Install.*