#!/bin/bash
# Part of PiNet https://github.com/PiNet/PiNet
#
# See LICENSE file for copyright and license details

version=1.2.10

#PiNet (Previously RaspberryPi-LTSP)

#Written by Andrew Mulholland, based off the fantastic work by vagrantc and alksig from the LTSP community
#Initial guide available at http://cascadia.debian.net/trenza/Documentation/raspberrypi-ltsp-howto/
#Spindle was used to figure out needed changes to generate Raspbian image https://github.com/asb/spindle
#
#PiNet is a utility for setting up and configuring a Linux Terminal Server Project (LTSP) network for Raspberry Pi's

#Constants
#------------------------
ConfigFileLoc=/etc/pinet
Timeout=1
PythonFunctions="/usr/local/bin/pinet_functions_python.py"
PythonStart="python3"
p="$PythonStart $PythonFunctions"
RepositoryBase="https://github.com/PiNet/"
RepositoryName="PiNet"
BootRepositoryName="PiNet-Boot"
RawRepositoryBase="https://raw.github.com/PiNet/"
Repository="$RepositoryBase$RepositoryName"
BootRepository="$RepositoryBase$BootRepositoryName"
RawRepository="$RawRepositoryBase$RepositoryName"
ReleaseBranch="jessie-stable"  #Overwriten later on in SetupRepositories()
ltspBase="/opt/ltsp/"
cpuArch="armhf"


#------------------------

SetupRepositories(){
    ReleaseChannel=$(echo "$ReleaseChannel" | tr '[:upper:]' '[:lower:]')
    case "$ReleaseChannel" in
        stable)
            ReleaseBranch="stable"
        ;;

        beta)
            ReleaseBranch="beta"
        ;;

        dev)
            ReleaseBranch="beta"
        ;;

        alpha)
            ReleaseBranch="alpha"
        ;;

        "custom:*")
            ReleaseBranch=${ReleaseChannel:7:channelLength}
        ;;

        *)
            ReleaseBranch="stable"
        ;;
    esac

}

LegacyFixes() {
    #Runs a number of legacy code checks, making sure everything is configured correctly.
    if [ -d "/home/shared" ]; then
        CheckSharedFolderIntegrity
    fi
    CheckDesktopShortcut
    teacherSudoCheck
    CheckRaspberryPiUIMods
    ReplaceAnyTextOnLine /opt/ltsp/armhf/etc/lts.conf "NFS_HOME=/home" ""
    if [ -f "/etc/default/epoptes" ]; then
        ReplaceTextLine "/etc/default/epoptes" "SOCKET_GROUP=staff" "SOCKET_GROUP=teacher"
    fi

    if [ ! -f "/opt/ltsp/armhf/usr/local/bin/pinet-screenshot.sh" ]; then
        AddScreenshot
        UpdateConfig NBDBuildNeeded true
    fi

    if [ ! -f "/usr/local/bin/changePassword.sh" ]; then
        AddPasswordReset
        UpdateConfig NBDBuildNeeded true
    fi
    CheckPipSymbolicLinkBug
    local passwdVersion=$(cat /home/$SUDO_USER/Desktop/pinet-password.desktop | sed -n '2p')
    ReplaceAnyTextOnLine /opt/ltsp/armhf/etc/lts.conf REMOTE_APPS REMOTE_APPS=True
    exitcode=$?
    sed -i '/^[[:blank:]]*$/d' /opt/ltsp/armhf/etc/lts.conf
    if [ "$exitcode" = "1" ]; then
        UpdateConfig NBDBuildNeeded true
    fi

    CheckDebianVersion
    CheckBackupScriptVersion

    if [ -f "/usr/local/bin/pinet-functions-python.py" ]; then
        mv "/usr/local/bin/pinet-functions-python.py" "/usr/local/bin/pinet_functions_python.py"
    fi

    # Make sure that all the required Python libraries are installed
    $PythonStart -c 'import feedparser' 2>/dev/null || (sudo apt-get install -y python3-feedparser  )
    $PythonStart -c 'import requests' 2>/dev/null || (sudo apt-get install -y python3-requests  )
    $PythonStart -c 'import netifaces' 2>/dev/null || (sudo apt-get install -y python3-netifaces  )

    if [ "$NBDBuildNeeded" = "true" ] && [ ! "$1" = "NoRecompress" ] ; then
        echo $"A required system update has been found. The Raspbian operating system will now be recompressed to apply this update"
        NBDRun
    else
        UpdateConfig NBDBuildNeeded false
    fi
    $p "checkStatsNotification"

}


ConfigFileRead(){
    #Reads the config file and loads in data as variables
    #Taken from - http://wiki.bash-hackers.org/howto/conffile
    configfile_secured="/tmp/pinet-config"

    if egrep -q -v '^#|^[^ ]*=[^;]*' "$ConfigFileLoc"; then
        # filter the original to a new file
        egrep '^#|^[^ ]*=[^;&]*'  "$ConfigFileLoc" > "$configfile_secured"
        ConfigFileLoc="$configfile_secured"
        source "$ConfigFileLoc"
    else
        source "$ConfigFileLoc"
    fi
}

ReplaceTextLine(){
# ReplaceTextLine /textfile bob brian
    egrep -i "^$2" $1 >> /dev/null
    if [ $? = 0 ]; then
        sed -i "s/$2.*/$3/g" $1
    else
        echo "$3" >> $1
    fi

}

ReplaceAnyTextOnLine(){
# ReplaceTextLine /textfile bob brian
#REMEMBER!! The & symbol can't be in any of the strings as SED is using it for separating. Can change it if need be
        egrep -i "$2" $1 >> /dev/null
        if [ $? -eq 0 ]; then
                sed -i "s&.*$2.*&$3&g" $1
                return 0
        else
                echo "$3" >> $1
                return 1
        fi

}

UpdateConfig(){
    #Updates the PiNet config file with provided values
    #Example - UpdateConfig bob false
    local configName=$1
    local configValue=$2
    egrep -i "^$configName" $ConfigFileLoc >> /dev/null
    if [ $? = 0 ]; then
        sed -i "s/$configName.*/$configName=$configValue/g" $ConfigFileLoc
    else
        echo "$configName=$configValue" >> $ConfigFileLoc
    fi
ConfigFileRead
}


gp(){
    #Part of the Python functions code. As Python functions uses a text file to communicate back and forth, this reads it and echos to console.
    if [ -f /tmp/ltsptmp ]; then
        echo $(head -n 1 /tmp/ltsptmp)
    fi
}

installLTSP() {
#Installs main packages required by LTSP
apt-get update && apt-get upgrade -y

apt-get install -y ltsp-server qemu-user-static binfmt-support ldm-server sed git gnome-control-center nfs-kernel-server xml2 openssh-server inotify-tools bindfs
exitstatus=$?
if ! [ $exitstatus = 0 ]; then
    whiptail --title $"ERRORE!" --msgbox $"Nessuna connessione a Internet, oppure altro software e' gia' installato nel sistema! Per favore, aspetta 5-10 minuti o connettiti a Internet" 10 78
    exit 1
fi

}



buildClient() {
#Creates the custom config file needed to build Raspbian and grabs keychain. Then starts the build

wget http://archive.raspbian.org/raspbian.public.key -O - | gpg --import
gpg --export 90FDDD2E >> /etc/ltsp/raspbian.public.key.gpg

rm /etc/ltsp/ltsp-raspbian.conf

cat <<EOF > /etc/ltsp/ltsp-raspbian.conf
DEBOOTSTRAP_KEYRING=/etc/ltsp/raspbian.public.key.gpg
DIST=jessie
# For alternate raspbian mirrors, see: http://www.raspbian.org/RaspbianMirrors
MIRROR=http://mirrordirector.raspbian.org/raspbian
SECURITY_MIRROR=none
UPDATES_MIRROR=none
LOCALE="$LANG UTF-8"
KERNEL_PACKAGES=linux-image-3.10-3-rpi
EOF

VENDOR=Debian ltsp-build-client --arch armhf --config /etc/ltsp/ltsp-raspbian.conf
}



OneTimeFixes(){
#A number of one off fixes needed to be run

echo "/opt/ltsp *(ro,no_root_squash,async,no_subtree_check)" >> /etc/exports #sets up OS exporting for NFS
echo "/home   *(rw,sync,no_subtree_check)" >> /etc/exports #Sets up home folder exporting for NFS

mkdir /etc/skel/handin

echo '#!/bin/sh' >> /etc/network/if-up.d/tftpd-hpa      #Script to make sure tftpd-hpa autostarts
echo "service tftpd-hpa restart" >> /etc/network/if-up.d/tftpd-hpa
chmod 755 /etc/network/if-up.d/tftpd-hpa
service tftpd-hpa restart
groupadd -g 628 pupil
groupadd -g 629 teacher

}

configFixes() {
#Configuration file changes required after the client is built. These are not once off as they reside inside the Raspberry Pi OS

sed -i -e 's,/bin/plymouth quit --retain-splash.*,/bin/plymouth quit --retain-splash || true,g' /opt/ltsp/armhf/etc/init.d/ltsp-client-core
echo 'LTSP_FATCLIENT=true' >> /opt/ltsp/armhf/etc/lts.conf
ReplaceAnyTextOnLine /opt/ltsp/armhf/etc/lts.conf REMOTE_APPS REMOTE_APPS=True
DuplicateLTSConf

ltsp-chroot --arch armhf groupadd -g 628 pupil
ltsp-chroot --arch armhf groupadd -g 629 teacher
AddUdevRules

printf 'snd-bcm2835\n' >> /opt/ltsp/armhf/etc/modules

addSoundcardDefault

}

addSoundcardDefault(){
#Adds the soundcard settings for Raspbian
grep -q mmap_emul "/opt/ltsp/armhf/etc/asound.conf" > /dev/null 2>&1
checkSound=$?
if [ ! $checkSound = 1 ]; then
cat <<\EOF1 > /opt/ltsp/armhf/etc/asound.conf
pcm.!default {
type hw;
card 0;
}

ctl.!default {
    type hw
    card 0
}

EOF1
return 1
else
return 0

fi

}

checkInternet(){
#Checks if the internet is connected. Mainly passes off to CheckInternet Python programme in Python functions
if [ ! "$CheckInternetConnection" = "false" ]; then
    $p CheckInternet $Timeout
    result=$(gp)
    return $result
else
    return 0
fi

}

checkInternetDetailed(){
#Does a more detailed internet connection check than checkInternet, uses internetFullStatusCheck()
if [ ! "$CheckInternetConnection" = "false" ]; then
    $p internetFullStatusCheck
    status=$(gp)
    return $status
else
    return 0
fi
}

UpdateSD() {
#Function for updating the SD card images

$p updateSD
ConfigFileRead  # Grab updated $NBDBuildNeeded
if [ "$NBDBuildNeeded" = "true" ] && [ ! "$1" = "NoRecompress" ]; then
        echo $"È stato trovato un aggiornamento di sistema richiesto. Il sistema operativo Raspbian verrà ora ricompresso per applicare questo aggiornamento."
        NBDRun
    fi
return

}

EnableNBDswap(){
#Enables NBD swap system. Allows the Raspberry Pis to use NBD partition as swap

rm /etc/nbd-server/conf.d/swap.conf
cat <<EOF > /etc/nbd-server/conf.d/swap.conf
[swap]
exportname = /tmp/nbd-swap/%s
prerun = nbdswapd %s
postrun = rm -f %s
EOF
service nbd-server restart

}


FixRepo() {
#Adds the repositories used by Raspbian. The public keys are included

# Adds PiNet repo
echo "Aggiunta della chiave del repository PiNet."
echo deb http://apt.pinet.org.uk jessie main > /opt/ltsp/armhf/etc/apt/sources.list.d/pinet.list
wget http://apt.pinet.org.uk/pinet.public.key -O /opt/ltsp/armhf/tmp/pinet.public.key
sudo ltsp-chroot --arch armhf apt-key add /tmp/pinet.public.key

rm -rf /opt/ltsp/armhf/etc/apt/sources.list.d/raspi.list
echo "Sto aggiungendo la chiave del repository della PiNet Foundation."
echo "deb http://archive.raspberrypi.org/debian/ jessie main ui staging" > /opt/ltsp/armhf/etc/apt/sources.list.d/raspi.list
ltsp-chroot --arch armhf apt-key add - <<EOF1
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.12 (GNU/Linux)

mQENBE/d7o8BCACrwqQacGJfn3tnMzGui6mv2lLxYbsOuy/+U4rqMmGEuo3h9m92
30E2EtypsoWczkBretzLUCFv+VUOxaA6sV9+puTqYGhhQZFuKUWcG7orf7QbZRuu
TxsEUepW5lg7MExmAu1JJzqM0kMQX8fVyWVDkjchZ/is4q3BPOUCJbUJOsE+kK/6
8kW6nWdhwSAjfDh06bA5wvoXNjYoDdnSZyVdcYCPEJXEg5jfF/+nmiFKMZBraHwn
eQsepr7rBXxNcEvDlSOPal11fg90KXpy7Umre1UcAZYJdQeWcHu7X5uoJx/MG5J8
ic6CwYmDaShIFa92f8qmFcna05+lppk76fsnABEBAAG0IFJhc3BiZXJyeSBQaSBB
cmNoaXZlIFNpZ25pbmcgS2V5iQE4BBMBAgAiBQJP3e6PAhsDBgsJCAcDAgYVCAIJ
CgsEFgIDAQIeAQIXgAAKCRCCsSmSf6MwPk6vB/9pePB3IukU9WC9Bammh3mpQTvL
OifbkzHkmAYxzjfK6D2I8pT0xMxy949+ThzJ7uL60p6T/32ED9DR3LHIMXZvKtuc
mQnSiNDX03E2p7lIP/htoxW2hDP2n8cdlNdt0M9IjaWBppsbO7IrDppG2B1aRLni
uD7v8bHRL2mKTtIDLX42Enl8aLAkJYgNWpZyPkDyOqamjijarIWjGEPCkaURF7g4
d44HvYhpbLMOrz1m6N5Bzoa5+nq3lmifeiWKxioFXU+Hy5bhtAM6ljVb59hbD2ra
X4+3LXC9oox2flmQnyqwoyfZqVgSQa0B41qEQo8t1bz6Q1Ti7fbMLThmbRHiuQEN
BE/d7o8BCADNlVtBZU63fm79SjHh5AEKFs0C3kwa0mOhp9oas/haDggmhiXdzeD3
49JWz9ZTx+vlTq0s+I+nIR1a+q+GL+hxYt4HhxoA6vlDMegVfvZKzqTX9Nr2VqQa
S4Kz3W5ULv81tw3WowK6i0L7pqDmvDqgm73mMbbxfHD0SyTt8+fk7qX6Ag2pZ4a9
ZdJGxvASkh0McGpbYJhk1WYD+eh4fqH3IaeJi6xtNoRdc5YXuzILnp+KaJyPE5CR
qUY5JibOD3qR7zDjP0ueP93jLqmoKltCdN5+yYEExtSwz5lXniiYOJp8LWFCgv5h
m8aYXkcJS1xVV9Ltno23YvX5edw9QY4hABEBAAGJAR8EGAECAAkFAk/d7o8CGwwA
CgkQgrEpkn+jMD5Figf/dIC1qtDMTbu5IsI5uZPX63xydaExQNYf98cq5H2fWF6O
yVR7ERzA2w33hI0yZQrqO6pU9SRnHRxCFvGv6y+mXXXMRcmjZG7GiD6tQWeN/3wb
EbAn5cg6CJ/Lk/BI4iRRfBX07LbYULCohlGkwBOkRo10T+Ld4vCCnBftCh5x2OtZ
TOWRULxP36y2PLGVNF+q9pho98qx+RIxvpofQM/842ZycjPJvzgVQsW4LT91KYAE
4TVf6JjwUM6HZDoiNcX6d7zOhNfQihXTsniZZ6rky287htsWVDNkqOi5T3oTxWUo
m++/7s3K3L0zWopdhMVcgg6Nt9gcjzqN1c0gy55L/g==
=mNSj
-----END PGP PUBLIC KEY BLOCK-----
EOF1

ltsp-chroot --arch armhf debconf-set-selections <<SELEOF
wolfram-engine shared/accepted-wolfram-eula boolean true
SELEOF
#Auto accepts wolfram eula

echo deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib non-free rpi > /opt/ltsp/armhf/etc/apt/sources.list

ltsp-chroot --arch armhf apt-get update
#Fetches most recent package lists

}


Finished() {
#Function performing any actions that should happen after the boot image has been created
whiptail --title $"Installazione Completata" --msgbox $"L'installazione del client è stata completata, un file boot.img è stato posizionato nella directory /root, scrivilo in una scheda SD" 16 78
}


RaspiTheme(){
#Grabs a copy of the PiNet desktop/login theme and installs

rm -rf /tmp/pinet
git clone --no-single-branch --depth 1 $Repository.git /tmp/pinet #Clones main repository, including boot files
(cd "/tmp/pinet"; git checkout "$ReleaseBranch")
cp -r /tmp/pinet/themes/raspi /opt/ltsp/armhf/usr/share/ldm/themes/raspi
rm /opt/ltsp/armhf/etc/alternatives/ldm-theme
ln -s /usr/share/ldm/themes/raspi /opt/ltsp/armhf/etc/alternatives/ldm-theme
rm -rf /tmp/pinet
cp /opt/ltsp/armhf/usr/share/ldm/themes/raspi/bg.png /opt/ltsp/armhf/usr/share/images/desktop-base/pinet.png
sudo ltsp-chroot --arch armhf update-alternatives --install /usr/share/images/desktop-base/desktop-background desktop-background /usr/share/images/desktop-base/pinet.png 100

}


NBDRun() {
#Checks if it should be auto NBD compressing or not, if it should be, it recompresses the image
ConfigFileRead
if [ "$NBD" = "true" ]; then  #If NBD is enabled on the system overall
    if [ "$NBDuse" = "true" ]; then  #If temporarily NBD is disable
        echo "--------------------------------------------------------"
        echo $"Compressione dell'immagine, questo processo potrebbe durare 5 minuti"
        echo "--------------------------------------------------------"
        ltsp-update-image /opt/ltsp/armhf  #If NBD is enabled, recompress the image
        UpdateConfig NBDBuildNeeded false
    else
        echo $"L'auto recomprissione del Raspbian OS è disabilitata. Per attivarla, avvia il comando NBD-recompress dall'altro menu"
    fi
fi

}

NBDSetup() {
#Setup function for NBD, asks user if they wish to use it, if not it defaults to NFS

whiptail --title $"Tecnologia di rete" --yesno  $"Sono disponibili 2 tecnologie di rete per PiNet. NBD e NFS. NBD utilizza la compressione che migliora drasticamente i tempi di caricamento delle applicazioni. Il compromesso è però dopo ogni modifica al sistema operativo, l'immagine deve essere ricompressa che può richiedere circa 5 minuti. NFS è più lento ma non ha bisogno di essere compresso, tutte le modifiche vengono eseguite dal vivo. In caso di dubbio, selezionare NBD." --yes-button "NBD" --no-button "NFS" 11 78
exitstatus=$?
if [ $exitstatus = 0 ]; then
    EnableNBD
else
    UpdateConfig NBD false
    UpdateConfig NBDuse false
    UpdateConfig NBDBuildNeeded false
    ConfigFileRead
fi
}

EnableNBD() {
    /usr/sbin/ltsp-update-image --config-nbd /opt/ltsp/armhf
    service nbd-server restart
    UpdateConfig NBD true
    UpdateConfig NBDuse true
    UpdateConfig NBDBuildNeeded false
    ConfigFileRead

}

AddSoftware(){
#All the software not included in normal base Debian that has been added to Raspbian normally by Spindle

#------------------------------------------------------------------------------------------
#******************************************************************************************

$p installChrootSoftware
return 0

}


AddUdevRules(){

ltsp-chroot --arch armhf printf 'ATTRS{idVendor}=="0694", ATTRS{idProduct}=="0003", SUBSYSTEMS=="usb", ACTION=="add", MODE="0666", GROUP="plugdev"' >> /etc/udev/rules.d/40-scratch.rules
ltsp-chroot --arch armhf printf "SUBSYSTEM==\"gpio*\", PROGRAM=\"/bin/sh -c 'chown -R root:pupil /sys/class/gpio && chmod -R 770 /sys/class/gpio; chown -R root:pupil /sys/devices/virtual/gpio && chmod -R 770 /sys/devices/virtual/gpio; chown -R root:pupil /sys/devices/platform/soc/*.gpio/gpio && chmod -R 770 /sys/devices/platform/soc/*.gpio/gpio'\"\n" > /etc/udev/rules.d/99-com.rules
ltsp-chroot --arch armhf printf 'SUBSYSTEM=="input", GROUP="pupil", MODE="0660"\n' >> /etc/udev/rules.d/99-com.rules
ltsp-chroot --arch armhf printf 'SUBSYSTEM=="i2c-dev", GROUP="pupil", MODE="0660"\n' >> /etc/udev/rules.d/99-com.rules
ltsp-chroot --arch armhf printf 'SUBSYSTEM=="spidev", GROUP="pupil", MODE="0660"\n' >> /etc/udev/rules.d/99-com.rules
ltsp-chroot --arch armhf printf 'SUBSYSTEM=="bcm2835-gpiomem", GROUP="pupil", MODE="0660"\n' >> /etc/udev/rules.d/99-com.rules

}

PiConfigFixes(){
#Configuration changes to Raspberry Pi files, mostly to do with LXDE instead of Raspbian itself

ltsp-chroot --arch armhf sed /etc/xdg/lxsession/LXDE/desktop.conf -i -e "s|sNet/ThemeName.*|sNet/ThemeName=Mist|"
ltsp-chroot --arch armhf sed /etc/xdg/openbox/LXDE/rc.xml -i -e \
"s|<drawContents>yes</drawContents>|<drawContents>no</drawContents>|"
ltsp-chroot --arch armhf apt-get install -y raspberrypi-artwork
ltsp-chroot --arch armhf update-alternatives --install /usr/share/images/desktop-base/desktop-background desktop-background /usr/share/raspberrypi-artwork/raspberry-pi-logo.png 100
ltsp-chroot --arch armhf PCMANFMCFG=/etc/xdg/pcmanfm/LXDE/pcmanfm.conf
ltsp-chroot --arch armhf sed "$PCMANFMCFG" -i -e 's/^wallpaper_mode.*/wallpaper_mode=3/'
ltsp-chroot --arch armhf sed "$PCMANFMCFG" -i -e 's/^desktop_bg.*/desktop_bg=#ffffff/'
ltsp-chroot --arch armhf sed "$PCMANFMCFG" -i -e 's/^su_cmd.*/su_cmd=gksu %s/'
}


EpoptesInstaller() {
    #Installs Epoptes classroom managment software
    apt-get update
    apt-get install -y epoptes
    gpasswd -a root staff
    ltsp-chroot --arch armhf apt-get update
    ltsp-chroot --arch armhf apt-get install -y epoptes-client --no-install-recommends
    ltsp-chroot --arch armhf epoptes-client -c
    ReplaceTextLine "/etc/default/epoptes" "SOCKET_GROUP" "SOCKET_GROUP=teacher"
}

EpoptesRun() {
    #Launches Epoptes classroom management software. Makes sure it is being run as the user, not as root.
    su -c "epoptes &" $SUDO_USER > /dev/null 2>&1 &
}

fixGroups(){
    # Verify correct groups exist, then make sure all users are in correct groups.
    $p verifyCorrectGroupUsers
    ConfigFileRead
    if [ "$NBDBuildNeeded" = "true" ] && [ ! "$1" = "NoRecompress" ] ; then
        NBDRun
        whiptail --title $"Riavvio richiesto" --msgbox $"È stata apportata una modifica dell'ID di gruppo per correggere una mancata corrispondenza dell'ID. Questo non è nulla di cui preoccuparsi a meno che non si vedano più volte. Riavvia il tuo server PiNet il prima possibile." 9 78
    fi
}


fixGroupsSingle() {
    #Check a single user is in the correct groups
    $p verifyCorrectGroupSingleUser $1
}



AddTeacher() {
    #Adds a new teacher user to the system
    whiptail --title $"Insegnante" --msgbox $"Gli insegnanti hanno pieno accesso amministrativo sul server (quindi possono eseguire PiNet), accesso completo in lettura / scrittura a tutte le cartelle condivise e al livello di insegnante di Epoptes (in modo da poter controllare i computer degli studenti)." 9 78
    username=$(SelectUser $"per aggiungere al gruppo degli insegnanti")
    if [ ! $username = 1 ]; then
        INIT=""
        AddUserToTeacher $username
        whiptail --title $"Successo!" --msgbox "L'utente $username è stato aggiunto al gruppo insegnanti." 8 78
    fi
}

AddUserToTeacher() {
    #Adds the user to the teacher group
    usermod -a -G teacher $1
    AddDesktopShortcutToUser $1
}

FixDesktopIcons(){
#Adds all the correct desktop icons for PiNet
rm -rf /etc/skel/Desktop
cd /opt/ltsp/armhf/usr/share/applications
mkdir /etc/skel/Desktop
sudo cp -a scratch.desktop idle.desktop idle3.desktop lxterminal.desktop debian-reference-common.desktop wolfram-mathematica.desktop epiphany-browser.desktop wolfram-language.desktop sonic-pi.desktop minecraft-pi.desktop /etc/skel/Desktop
cd /etc/skel
wget "https://github.com/KenT2/python-games/tarball/master" -O python_games.tar.gz
tar -xvf python_games.tar.gz
mv KenT2-python-games* python_games
chmod +x python_games/launcher.sh
rm python_games.tar.gz
cd /etc/skel/Desktop
cat <<\EOF2 > python-games.desktop
[Desktop Entry]
Name=Python Games
Comment=From http://inventwithpython.com/pygame/
Exec=sh -c $HOME/python_games/launcher.sh
Icon=/usr/share/pixmaps/python.xpm
Terminal=false
Type=Application
Categories=Application;Games;
StartupNotify=true
EOF2

cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user
do
        mkdir /home/$user/Desktop
        cd /home/$user/Desktop/
        cp -R  /etc/skel/Desktop/* /home/$user/Desktop/
        chown -R "$user" *
        cp -R /etc/skel/python_games /home/$user/python_games

done

AddScreenshot
AddPasswordReset

}


CollectWork(){
#A work collection system. It grabs files from students "handin" folders, copies them to "submitted" folder on the server and changes their owner
INIT="$SUDO_USER"
USERHAND=$(whiptail --inputbox $"Immettere il nome utente dell'account utente su cui si desidera salvare il lavoro raccolto. Questo di solito è il nome del tuo account" 8 78 $INIT --title $"User selection" 3>&1 1>&2 2>&3)

exitstatus=$?
if [ $exitstatus = 0 ]; then
    whiptail --title $"AVVERTIMENTO" --yesno $"La cartella attuale scelta verrà eliminata, sei sicuro?" 8 78
    exitstatus=$?
    if [ $exitstatus = 0 ]; then
        rm -rf /home/"$USERHAND"/submitted
        mkdir /home/"$USERHAND"/submitted
        exitstatus=$?
        if [ $exitstatus = 0 ]; then
            if [ "$USERHAND" != "" ]; then
                cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user
                do
                    if groups "$user" | grep -q -E ' pupil(\s|$)'; then
                        if [ -d "/home/$user/handin" ]; then
                            echo $"l'utente $user ha una cartella di handin"
                            cp -r "/home/$user/handin/" "/home/$USERHAND/submitted/$user/"

                        fi

                        else
                            echo $"L'utente $user non ha una cartella di handin"

                    fi
                done

                chown -R "$USERHAND" /home/"$USERHAND"/submitted
                whiptail --title $"Completato!" --msgbox $"I lavori degli studenti sono stati raccolti e sono accessibili in : /home/$USERHAND/submitted/" 8 78
            else
            whiptail --title $"ERRORE" --msgbox $"l'username non può essere uno spazio vuoto" 8 78
            fi
        else
            whiptail --title $"ERRORE" --msgbox $"L'utente $USERHAND non è stato trovato" 8 78

        fi
    fi
fi

}

CopyToUsers(){ #(Path-to-folder, path-in-home, skel? warning?)
#Used to copy files out to every user, plus to the skel folder for new users

if [ $4 == "True" ]; then
    whiptail --title "ATTENZIONE" --yesno "Questo comporta copiare una cartella alla directory home, se esiste la cancello?" 8 78
    local delete=$?
else
    local delete=0
fi
local CurrentFilepath=$1
local NewFilepath=$2
local filename=$(basename "$NewFilepath")
cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user
do
    if [ $delete = 0 ] ; then
        rm -rf "/home/$user/$NewFilepath"
    fi
        mkdir -p "/home/$user/"$(dirname ${NewFilepath})
        cp -r  "$CurrentFilepath" "/home/$user/$NewFilepath"
        chown -R "$user" "/home/$user/$NewFilepath"

done
if [ $3 == "True" ]; then
    mkdir -p "/etc/skel/"$(dirname ${NewFilepath})
    cp -r  "$CurrentFilepath" "/etc/skel/$NewFilepath"
fi
}

SudoMenu(){
#Used to enable Sudo on pupil accounts

whiptail --title $"Accesso come amministratore" --yesno $"Vorresti che gli studenti avessero l'accesso al comando sudo?( Sudo equivalente all'esegui come amministratore dli windows) è abilitato di default in Raspbian, quindi disabilitarlo comporterebbe avere dei problemi con alcuni software. Abilitarlo potrebbe dare possibilità agli studenti di eludere le misure di sicurezza PiNet. Puoi cambiare idea più tardi nel submenu Gestisci Utenti." 13 78
exitstatus=$?
rm -f /opt/ltsp/armhf/etc/sudoers.d/01pupil
touch /opt/ltsp/armhf/etc/sudoers.d/01pupil
chmod 440 /opt/ltsp/armhf/etc/sudoers.d/01pupil
if [ $exitstatus = 0 ]; then
    echo '%pupil ALL=NOPASSWD: ALL' >> /opt/ltsp/armhf/etc/sudoers.d/01pupil
fi
echo '%pupil ALL = NOPASSWD: /sbin/shutdown' >> /opt/ltsp/armhf/etc/sudoers.d/01pupil
echo '%pupil ALL = NOPASSWD: /sbin/reboot' >> /opt/ltsp/armhf/etc/sudoers.d/01pupil
echo '%pupil ALL = NOPASSWD: /sbin/poweroff' >> /opt/ltsp/armhf/etc/sudoers.d/01pupil
echo '%pupil ALL = NOPASSWD: /sbin/halt' >> /opt/ltsp/armhf/etc/sudoers.d/01pupil
UpdateConfig NBDBuildNeeded true
}


fileSelect(){
#Selects a folder using some BASH/Whiptail trickery
results=$(whiptail --title $"Posizione attuale $(pwd)"  --menu $"Seleziona una cartella. Per selezionare questa cartella, digita ./ e per andare su una cartella, digita ../ " 20 80 10 `for x in $(ls -pa | grep "/"); do echo $x "-"; done` 2>&1 >/dev/tty)
exitstatus=$?
if [ "$exitstatus" = "1" ]; then
        echo "L'utente annullato :( "
        return "1"
else
        if [ "$results" = "./" ]; then
                location=$(pwd)
                echo $"la posizione scelta è: $location"
        else
                cd "$results"
                fileSelect
        fi
fi

}

SingleFileSelect(){
#Selects a folder using some BASH/Whiptail trickery
results=$(whiptail --title $"Posizione attuale $(pwd)"  --menu $"Seleziona una cartella. Per selezionare questa cartella, digita ./ e per andare su una cartella, digita ../ " 20 80 10 `echo "../ -"; for x in $(ls -p); do echo $x "-"; done` 2>&1 >/dev/tty)
exitstatus=$?
if [ "$exitstatus" = "1" ]; then
        echo "L'utente annullato :("
        return "1"
else
        if [ -f "$results" ]; then
                location=$(pwd)/$results
                echo "$location"
        else
                cd "$results"
                SingleFileSelect
        fi
fi

}

removeAnacronLines() {
#Removes anacrontab lines which can cause issues. Used for backup scheduling
sed --in-place '/PiNet.backup/d' /etc/anacrontab
sed --in-place '/PiNet.backup/d' /etc/anacrontab
sed --in-place '/PiNet.backup/d' /etc/anacrontab

}

createBackupScript(){
#Adds the backup script to the system to auto backup user data
rm -rf /usr/local/bin/pinet-backup.sh

echo '#!/bin/sh
version=2

#PiNet backup utility script

ConfigFileLoc=/etc/pinet
ConfigFileRead(){
    if egrep -q -v "^#|^[^ ]*=[^;]*" "$ConfigFileLoc"; then
        # filter the original to a new file
        egrep "^#|^[^ ]*=[^;&]*"  "$ConfigFileLoc" > "$configfile_secured"
        ConfigFileLoc="$configfile_secured"
        source "$ConfigFileLoc"
    else
        source "$ConfigFileLoc"
    fi
    #echo config read
}

ConfigFileRead

currentDate=`date +"%d-%m-%y"`
currentTime=`date +"%H_%M"`
if [ ! $backupLoc = "" ]; then
        LOCATION=$backupLoc
        if [ -d "$LOCATION" ]; then
                find "$LOCATION" -name "*PiNet-Users-Backup.tar.gz" -ctime +"$DELETETIME" | xargs rm -rf
                tar -zcvf "$LOCATION$currentDate--$currentTime--PiNet-Users-Backup.tar.gz" /home
                exitstatus=$?
                if [ $exitstatus = 0 ]; then
                        logger -s "$currentDate $currentTime - Il backup dei file degli utenti ha avuto successo" 2>> /var/log/PiNet-backup.log
                else
                        logger -s "$currentDate $currentTime - Backup fallito con codice errore tar $exitstatus" 2>> /var/log/PiNet-backup.log
                fi
        else
                logger -s "$currentDate $currentTime - Cartella di backup non disponibile!" 2>> /var/log/PiNet-backup.log
        fi
else
        logger -s "$currentDate $currentTime - Nessuna posizione di backup specificata!" 2>> /var/log/PiNet-backup.log
fi' >> /usr/local/bin/pinet-backup.sh
chmod +x /usr/local/bin/pinet-backup.sh
}

AddUsers(){
#Add users to the system. Manually adds the user hash instead of using adduser
    username=$(whiptail --inputbox $"Inserisci un nuovo nome utente" 8 78 $INIT --title $"Nome utente" 3>&1 1>&2 2>&3)
    exitstatus=$?
    if [ "$exitstatus" = "0" ]; then
        password=$(whiptail --inputbox $"Inserire una nuova password" 8 78 $INIT --title $"Password" 3>&1 1>&2 2>&3)
        exitstatus=$?
        if [ "$exitstatus" = "0" ]; then
            egrep "^$username" /etc/passwd >/dev/null
            if [ $? -eq 0 ]; then
                whiptail --title "Errore" --msgbox $"Il nome utente esiste già!" 8 78
            else
                pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
                useradd -m -s /bin/bash -p $pass $username
            [ $? -eq 0 ] && echo $"$username è stato aggiunto al sistema!" || echo $"Impossibile aggiungere un utente!"
            fixGroupsSingle $username
            whiptail --title $"Livello di autorizzazione" --yesno $"Is $username un allievo o un insegnante? Gli insegnanti hanno molte più autorizzazioni, incluso l'accesso in scrittura a tutte le cartelle condivise, l'accesso agli insegnanti di Epoptes e la possibilità di eseguire il software di controllo PiNet." --yes-button $"Allievo" --no-button $"Insegnante" 8 78  ############
            if [ ! $? -eq 0 ]; then
                AddUserToTeacher $username
                whiptail --title $"Successo" --msgbox $"Un nuovo utente insegnante è stato aggiunto al sistema con successo con il nome - $username" 8 78
            else
                whiptail --title $"Successo" --msgbox $"Un nuovo utente studente è stato aggiunto al sistema con successo con il nome - $username" 8 78
            fi
            fi
            whiptail --title $"Un altro utente" --yesno $"Vorresti aggiungere un altro utente?" 8 78
            if [ $? -eq 0 ]; then
                AddUsers
            fi
        fi
    fi
}

RemoveUser(){
    #Removes user from list
    username=$(SelectUser "to remove.")
    if [ ! $username = 1 ]; then
        whiptail --title $"Sei sicuro?" --yesno $"Sei sicuro di voler eliminare $username e tutti i suoi file?" 8 78
        if [ $? -eq 0 ]; then
            userdel -rf $username
            whiptail --title $"Operazione terminata con uccesso" --msgbox $"Utente rimosso con successo" 8 78
        fi
    fi
    whiptail --title $"Un altro utente" --yesno $"Vorresti cancellare un altro utente?" 8 78
    if [ $? -eq 0 ]; then
        RemoveUser
    fi
}


ChangeUserPassword(){
    #Change a users password
    username=$(SelectUser $"cambiare la password di.")
    if [ ! $username = 1 ]; then
        password=$(whiptail --inputbox $"Inserisci la nuova password" 8 78 $INIT --title $"Password" 3>&1 1>&2 2>&3)
            if ! [ "$password" = "" ]; then
                echo -e "$password\n$password" | passwd $username
                whiptail --title $"Operazione terminata con uccesso" --msgbox $"Password cambiata con successo" 8 78
            else
                whiptail --title $"Errore" --msgbox $"Password non valida" 8 78
            fi
    fi
    whiptail --title $"Un altro utente" --yesno $"Volete cambiare la password di un altro utente?" 8 78
        if [ $? -eq 0 ]; then
            ChangeUserPassword
        fi


}


RestoreBackup() {  #Currently incomplete
    whiptail --title $"Seleziona il backup" --msgbox $"Si prega di selezionare un file di backup. Normalmente sono la data, l'ora seguita da Raspi-Users-Backup.tar.gz" 8 78

}

SelectUser(){
#Using some BASH/Whiptail magic, builds a list of users, formats it perfectly and hads it to whiptail
users=$(cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | sort | awk -F':' '{ print $1"\na"}')
user=$(whiptail --title $"Utenti" --menu $"Seleziona un utente $1" 16 78 5 $users --noitem 3>&1 1>&2 2>&3)
if [ $? -eq 0 ]; then
    echo $user
else
    echo 1
fi
}

TroubleShooter(){
#PiNet troubleshooter - Needs some more answers built in
    whiptail --title $"Risoluzione dei problemi" --msgbox $"Benvenuti nello strumento di risoluzione dei problemi PiNet. Lo strumento per la risoluzione dei problemi risolve alcuni problemi che potresti riscontrare nella configurazione e offre consigli. ATTENZIONE - Questo strumento per la risoluzione dei problemi è sperimentale, sentiti libero di aprire rapporti sulle problematiche all'indirizzo $Repository/issues se hai ulteriori problemi." 16 78
    whiptail --title $"Avvio" --yesno $"Sei arrivato fino a quando il tuo Raspberry Pi si avvia?" 8 78
    if [ $? -eq 0 ]; then
        whiptail --title $"Schermata di accesso" --yesno $"Sei arrivato fino alla visualizzazione della schermata di accesso?" 8 78
        if [ $? -eq 0 ]; then
            whiptail --title $"Schermata di accesso" --yesno $"Stai avendo problemi di accesso?" 8 78
            if [ $? -eq 0 ]; then
                whiptail --title $"Accesso" --msgbox $"LDM (schermata di accesso) non gestisce le password errate molto bene. Se inserisci una serie errata di credenziali, si riavvia da solo. Non preoccuparti di questo.
                Se non sei sicuro della tua password, ricorda che puoi facilmente modificarla nel sottomenu Gestione utenti" 16 78
            else
                whiptail --title $"USB drivers" --yesno $"La tua tastiera funziona?" 8 78
                if [ ! $? -eq 0 ]; then
                    whiptail --title $"Kernel disallineato" --msgbox $"9/10 volte, questo significa che i tuoi kernel sono disallineati. Fondamentalmente c'è un kernel sulla scheda SD e mentre si avvia e si connette al server PiNet, carica i moduli aggiuntivi richiesti (per cose come USB) dal server. Se il server ha moduli compilati per un kernel più recente, sono disallineati e non funzionano. Per risolvere questo problema, assicurati di aver eseguito la versione più recente di PiNet, anche l'opzione update-sd e aggiorna la scheda SD per vedere se lo risolve. In caso contrario, un set di file di avvio patchato potrebbe non essere ancora disponibile (devono essere preparati a mano). La cosa migliore che puoi fare è lasciare un'e-mail di supporto e informarli che stai riscontrando problemi di tastiera / mouse. Visita http://pinet.org.uk/articles/support.html" 17 78
                else
                    whiptail --title $"???" --msgbox $"Non ho riscontrato nessuno dei problemi in quest'area. Si prega di creare un ticket di supporto a $Repository/issues" 8 78
                fi
            fi
        else
            resetAndCleanup
            whiptail --title $"Riparato?" --yesno $"È riparato ora? Ho appena ripristinato alcuni dei servizi di rete." 8 78
            if [ ! $? -eq 0 ]; then
                whiptail --title $"Connessione rifiutata" --yesno $"Stai ottenendo connessione rifiutata o errore di connessione scaduta?" 8 78
                if [ $? -eq 0 ]; then
                    GetInternalIPAddress #Get the current main IP address
                    whiptail --title $"Risoluzione dei problemi" --msgbox $"Questo è un errore comune, si verifica quando l'indirizzo IP del server sulla scheda SD non è corretto. Inserisci la scheda SD in un computer e apri il file cmdline.txt. Trova NBDRoot = (o NFSRoot =) e assicurati che l'indirizzo che lo segue sia $IP  Se non lo è, cambiala così com'è. Se è attualmente 1.1.1.1 il server non è stato in grado di ottenere il tuo indirizzo corrente quando ha creato la scheda SD. Se si tratta di un indirizzo diverso, il tuo server potrebbe essere stato assegnato un nuovo indirizzo IP. Sarebbe una buona idea assegnare un indirizzo IP statico al tuo server. Parla con il tuo tecnico di questo." 16 78
                else
                    whiptail --title $"Rinuncia" --yesno $"Stai ricevendo un certo numero di errori di 'rinuncia'?" 8 78
                    if [ $? -eq 0 ]; then
                        whiptail --title $"Rinuncia" --msgbox $"Questo di solito significa che il Raspberry Pi non è fisicamente connesso alla rete, controllare che il cavo Ethernet sia collegato correttamente (il wifi non è supportato) e che sia collegato allo switch principale." 16 78
                    else
                        whiptail --title $"???" --msgbox $"Non ho riscontrato nessuno dei problemi presenti in quest'area. Si prega di creare un ticket di supporto a $Repository/issues" 8 78
                    fi
                fi
            fi
        fi
    else
        whiptail --title $"Scherda SD" --yesno $"Hai problemi con il caricamento dei file sulla scheda SD?" 8 78
        if [ $? -eq 0 ]; then
            whiptail --title $"Partizioni" --yesno $"Hai problemi con la presenza di 2-3 partizioni sulla scheda SD?" 8 78
            if [ $? -eq 0 ]; then
                whiptail --title $"Formattare le partizioni" --msgbox $"Quando si esegue il lampeggio di Raspbian o di un altro sistema operativo Raspberry Pi su schede SD, viene creata una serie di partizioni. PiNet ha bisogno solo di una singola partizione, la partizione di avvio. Di solito è una piccola partizione (50mb) formattata come fat32. Se si desidera formattare l'intera scheda SD (che, se si riscontrano problemi, si consiglia di farlo), fare riferimento al manuale sulla formattazione delle schede SD. " 16 78
            else
                whiptail --title $"???" --msgbox $"Non ho riscontrato nessuno dei problemi presenti in quest'area. Si prega di creare un ticket di supporto a $Repository/issues" 8 78
            fi
        else
            whiptail --title $"???" --msgbox $"Non ho riscontrato nessuno dei problemi presenti in quest'area. Si prega di creare un ticket di supporto a $Repository/issues" 8 78
        fi
    fi
}


DisplayUsers(){
#Displays system users onto the terminal
clear
local TEACHER=$(cat /etc/group | grep --regex "^teacher:.*" | awk -F: '{print $4}')
echo "-------------------"
echo $"Utenti Linux attuali"
echo "-------------------"
cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user
    do
        echo "$user"
    done
echo "---------------"
echo $"Utenti Linux attuali nel gruppo di insegnanti"
echo "$TEACHER"
echo "---------------"
echo $"Premere invio per continuare"
read

}

SetupSambaServer(){
#Unused
    apt-get install samba libpam-smbpass -y


}

SetupSambaPi(){
#Unused
    mkdir /opt/ltsp/armhf/media/school-share
    ReplaceTextLine /opt/ltsp/armhf/etc/lts.conf FSTAB 'FSTAB_0="//server/School-Share  /media/school-share  cifs  guest,uid=1000,iocharset=utf8  0  0"'
    echo "file:///media/school-share School-Share" >>/tmp/.gtk-bookmarks
    CopyToUsers /tmp/.gtk-bookmarks .gtk-bookmarks True False
    rm -rf /tmp/.gtk-bookmarks

}

AfterUpdate(){
#Code run after a successful update on the BASH side, given that most update code is handled via Python
    ConfigFileRead
    whiptail --title $"Aggiornamento completato" --msgbox $"L'aggiornamento è riuscito. PiNet è ora aggiornato $ReleaseBranch." 8 78
        whiptail --title $"Aggiorna tutto" --yesno $"Dopo un aggiornamento del software si consiglia di eseguire un aggiornamento del sistema. Questo aggiornerà tutti i pacchetti alla loro versione più recente e aggiungerà i nuovi aggiunti nell'aggiornamento, procedere?" 9 78
        exitstatus=$?
        if [ $exitstatus = 0 ]; then
            exec /bin/bash pinet Update-All
            exit
        else
            exec /bin/bash pinet
            exit
        fi
}


Updater(){
#Main updater, most of it is handed by updatePiNet on the Python side or by AfterUpdate on BASH side
    $p updatePiNet
    exitstatus=$(gp)
    if [ $exitstatus = 0 ] && [ "$1" = "IgnoreAfterUpdate" ]; then
        if [ ! "$2" = "NoRestart" ]; then
            whiptail --title $"Riavvio di PiNet" --msgbox $"Riavvio di PiNet per garantire che stia eseguendo la versione corretta." 8 78
            exec /bin/bash pinet
            exit
        fi

    else
        if [ $exitstatus = 0 ]; then
            AfterUpdate
        else
            whiptail --title $"Aggiornamento non riuscito" --msgbox $"L'aggiornamento automatico non è riuscito. Questo di solito significa che non sei connesso a Internet" 8 78
            exec /bin/bash pinet
        fi
    fi

}

VerifyPythonPackages(){
#Verify needed Python packages are installed. If not installed, install them.
    $PythonStart -c 'import feedparser' 2>/dev/null || (sudo apt-get install -y python3-feedparser  )
    $PythonStart -c 'import requests' 2>/dev/null || (sudo apt-get install -y python3-requests  )
    $PythonStart -c 'import netifaces' 2>/dev/null || (sudo apt-get install -y python3-netifaces  )
}


CheckReleases(){
#Checks if there is a new software release. Mainly uses CheckUpdate on Python side. Also runs sendStats.
    $PythonStart -c 'import feedparser' 2>/dev/null || (sudo apt-get install -y python3-feedparser  )
    $PythonStart -c 'import requests' 2>/dev/null || (sudo apt-get install -y python3-requests  )
    $PythonStart -c 'import netifaces' 2>/dev/null || (sudo apt-get install -y python3-netifaces  )
    $p sendStats
    $p CheckUpdate $version
    exitstatus=$(gp)
    #echo $exitstatus
    if [ $exitstatus = 1 ]; then
        AfterUpdate
    fi

}

checkInstallLoc(){
#Checks PiNet is installed in the correct place (/usr/local/bin/pinet)
InstallLoc="${BASH_SOURCE[0]}"
if [ ! "$InstallLoc" = "/usr/local/bin/pinet" ]; then
    mv $InstallLoc /usr/local/bin/pinet
    exec /bin/bash pinet
fi
}

AddSambaUser(){
#Unused
    whiptail --title "Samaba" --msgbox "Samba utilizza un sistema utente separato rispetto a Linux. Può però condividere utenti, ma per aggiungere un nuovo utente a samba è necessario modificare la password. Puoi cambiarlo esattamente come prima e devi farlo solo una volta." 10 78
    whiptail --title "Samaba" --msgbox "Gli utenti di Samba potranno modificare la cartella di condivisione della scuola disponibile su tutti i Raspberry Pis. Non è consigliabile aggiungere studenti a questo." 8 78
    username=$(whiptail --inputbox "Inserisci il nome utente da aggiungere a samba" 8 78 $INIT --title "Nome utente" 3>&1 1>&2 2>&3)
    if [ $? -eq 0 ]; then
        if ! [ "$username" = "" ]; then
            egrep "^$username" /etc/passwd >/dev/null
            if [ $? -eq 0 ]; then
                smbpasswd -a "$username"
                password=$(whiptail --inputbox "Si prega di inserire nuovamente la password, deve essere corretta!" 8 78 $INIT --title "Password" 3>&1 1>&2 2>&3)
                if ! [ "$password" = "" ]; then
                    echo -e "$password\n$password" | passwd $username
                    whiptail --title "Operazione completata con successo" --msgbox "Utente aggiunto a Samba" 8 78
                else
                    whiptail --title "Errore" --msgbox "Password non valida" 8 78
                fi
            else
                whiptail --title "Errore" --msgbox "Il nome utente non esiste!" 8 78
            fi
        else
            whiptail --title "Errore" --msgbox "Il nome utente non è valido" 8 78
        fi
        whiptail --title "Un altro utente?" --yesno "Vorresti aggiungere un altro utente Samba?" 8 78
        if [ $? -eq 0 ]; then
            AddSambaUser
        fi
    fi

}


UpdateAll(){
#Does a full system update on the server and on the Raspberry Pi OS
    checkInternet
    if [ $? -eq 0 ]; then
        apt-get update
        apt-get upgrade -y
        ltsp-chroot --arch armhf apt-get update
        ltsp-chroot --arch armhf apt-get upgrade -y
        AddSoftware
        NBDRun
        whiptail --title $"Aggiornamento completato" --msgbox $"Aggiornamenti completati" 7 78
    else
        whiptail --title $"Erroer" --msgbox $"Nessuna connesione a internet, impossibile aggiornare il software..." 8 78
    fi

}

SetupSharedStandalone() {
    #Sets up shared folders. To use shared folders, extra line must be added to lts.conf file for Raspberry Pi
    mkdir /home/shared > /dev/null 2>&1
    sudo chown :teacher /home/shared
    sudo chmod 775 /home/shared
    ReplaceTextLine /opt/ltsp/armhf/etc/lts.conf LOCAL_APPS_EXTRAMOUNTS 'LOCAL_APPS_EXTRAMOUNTS=/home/shared'
    DuplicateLTSConf

}

SetupShared(){
    #User frontend for SetupSharedStandalone() for when it is not run directly
    echo $"Impostazione delle cartelle condivise"
    whiptail --title $"Impostazione delle cartelle condivise" --msgbox $"Poiché è la prima volta che si utilizzano le cartelle condivise, è necessario configurarle. Questo potrebbe richiedere alcuni minuti." 8 78
    SetupSharedStandalone
    NBDRun

}

CreateSharedFolder(){
    #Create a new shared folder on the Raspberry Pis
    mkdir /home/shared/$1
    if [ ! $? -eq 0 ]; then
        whiptail --title $"Errore" --msgbox $"La cartella condivisa in /home/shared/$1 non è stata creata. Potrebbe già esistere" 8 78
        return 1
    else
        chown root: /home/shared/$1
        chmod 0700 /home/shared/$1
        return 0
    fi
}

RebuildGTKBookmarks(){
#Shared folders use GTK bookmarks to appear on the left hand side of the file manager, this rebuilds them for each edit (for example, when you create a new shared folder)
FILES=/home/shared/*
    for f in $FILES
        do
        local FolderName=$(basename "$f")
        echo "file://$f $FolderName" >> /tmp/.gtk-bookmarks
    done
    CopyToUsers /tmp/.gtk-bookmarks .gtk-bookmarks True False
    rm -rf /tmp/.gtk-bookmarks
}

SelectSharedFolder(){
#Select a shared folder using some BASH/Whiptail magic
SFs=$(ls -1 /home/shared | awk -F':' '{ print $1"\na"}')
SF=$(whiptail --title "Cartelle condivise" --menu "Seleziona una cartella condivisa $1" 16 78 5 $SFs --noitem 3>&1 1>&2 2>&3)
if [ $? -eq 0 ]; then
    echo $SF
else
    echo 1
fi
}

CreateSharedFoldersDialog(){
    #Main dialog for creating new shared folders. Checks if they are installed, if so, displays all current shared folders, then asks for name, then adds it as a bindfs mount for the Pis
    whiptail --title $"Crea una cartella condivisa" --yesno $"Le cartelle condivise sono accessibili su tutti i Raspberry Pi e appaiono a sinistra nel file manager. Vorresti aggiungerne una?" 8 78
    if [ $? -eq 0 ]; then
        if [ ! -d /home/shared ]; then
            SetupShared
        fi
        CheckSharedFolderIntegrity
        clear
        echo ""
        echo "----------------------"
        echo $"Cartelle condivise correnti"
        echo "----------------------"
        echo ""
        ls /home/shared -1
        echo ""
        echo $"Premere invio per continuare"
        read
        FolderName=$(whiptail --inputbox $"Inserisci il nome della nuova cartella condivisa" 8 78 --title $"Cartella condivisa" 3>&1 1>&2 2>&3)
        if [ $? -eq 0 ]; then
            if ! [ "$FolderName" = "" ]; then
                CreateSharedFolder "$FolderName"
                if [ $? -eq 0 ]; then
                    whiptail --title $"Permesso di scrittura per alunni" --yesno $"Gli studenti devono avere accesso in lettura / scrittura a questa cartella condivisa o semplicemente accedere in lettura? (Solo lettura predefinita)" --yes-button $"Lettura" --no-button $"Lettura/Scrittura" 8 78
                    if [ ! $? -eq 0 ]; then
                        ReplaceAnyTextOnLine /usr/local/bin/bindfs-mount "/home/shared/$FolderName" "bindfs -o perms=0775,force-group=pupil /home/shared/$FolderName /home/shared/$FolderName"
                    else
                        ReplaceAnyTextOnLine /usr/local/bin/bindfs-mount "/home/shared/$FolderName" "bindfs -o perms=0775,force-group=teacher /home/shared/$FolderName /home/shared/$FolderName"
                    fi
                    RebuildGTKBookmarks
                    service bindfs-mount restart
                    whiptail --title $"Completato" --msgbox $"La cartella condivisa in /home/shared/$FolderName è stata create! Per accederci, riavvia il tuo Raspberry Pis." 8 78

                fi
            else
                whiptail --title $"Errore" --msgbox $"Il nome della cartella non può essere lasciato vuoto!" 8 78
            fi
        fi
    fi


}

RemoveSharedFolder(){
    #Used to remove shared folders. Involves removing the GTK bookmark, then removing the bindfs mount. Finally the actual folder is deleted
    whiptail --title $"Attenzione!" --yesno $"Avvertimento! Se si elimina una cartella condivisa, è necessario riavviare tutti i Raspberry Pis attualmente accessi in quanto potrebbero confondersi. Vuoi continuare?" 8 78
    if [ $? -eq 0 ]; then
        toDelete=$(SelectSharedFolder "per eliminare.")
        if [ ! $toDelete = 1 ]; then
            whiptail --title $"Sei sicuro?" --yesno $"Sei sicuro di voler eliminare definitivamente /home/shared/$toDelete ?" 8 78
            if [ $? -eq 0 ]; then
                RebuildGTKBookmarks
                ReplaceAnyTextOnLine /usr/local/bin/bindfs-mount $"/home/shared/$toDelete" ""
                if [ $? -eq 0 ]; then
                    service bindfs-mount restart
                    rm -rf "/home/shared/$toDelete"
                    whiptail --title $"Successo" --msgbox $"La cartella in /home/shared/$toDelete è stata correttamente eliminata." 8 78
                else
                    service bindfs-mount restart
                    whiptail --title $"Errore" --msgbox $"Si è verificato un problema durante la rimozione della montatura /usr/local/bin/bindfs-mount... Per favore riprova." 8 78
                fi
            fi
        fi
    fi
}

SharedFolderPerm(){
#Used to change permission level of a shared folder. Perhaps switch from pupil read only to pupil read/write

    if [ "$1" = "" ]; then
        FolderName=$(SelectSharedFolder "da modificare")
    else
        FolderName=$1
    fi
    if [ ! $FolderName = 1 ]; then
        whiptail --title $"Permesso di scrittura per alunni" --yesno $"Deve $ FolderName essere in lettura/scrittura per gli studenti o solo in lettura?" --yes-button $"Lettura" --no-button $"Lettura/Scrittura" 8 78
            if [ ! $? -eq 0 ]; then
                ReplaceAnyTextOnLine /usr/local/bin/bindfs-mount "/home/shared/$FolderName" "bindfs -o perms=0775,force-group=pupil /home/shared/$FolderName /home/shared/$FolderName"
                service bindfs-mount restart
                whiptail --title $"Completato" --msgbox $"Modifica delle autorizzazioni completata, gli studenti ora hanno accesso in lettura/scrittura in /home/shared/$FolderName" 8 78
            else
                ReplaceAnyTextOnLine /usr/local/bin/bindfs-mount "/home/shared/$FolderName" "bindfs -o perms=0775,force-group=teacher /home/shared/$FolderName /home/shared/$FolderName"
                service bindfs-mount restart
                whiptail --title $"Completato" --msgbox $"Modifica delle autorizzazioni completata, ora gli studenti hanno accesso solo in lettura in /home/shared/$FolderName" 8 78
            fi
    fi
}

DisplaySharedFolders(){
#List all the shared folders in /home/shared
    clear
    echo ""
    echo "----------------------"
    echo $"Cartelle condivise correnti"
    echo "----------------------"
    echo ""
    ls /home/shared -1
    echo ""
    echo $"Permere invio per continuare"
    read
}


CheckSharedFolderIntegrity(){
    #Checks the permissions and everything for shared folders lines up with that that is on the Raspberry Pis. If not, it will ask you to clarify what it should be
    if [ ! -f /etc/init.d/bindfs-mount ]; then
        service stop bindfs-mount > /dev/null 2>&1
        addSharedFolderScript
    fi
    touch /usr/local/bin/bindfs-mount
    inFile=$(grep "bindfs" /usr/local/bin/bindfs-mount  | wc -l)
    inFolder=$(ls -1 /home/shared | wc -l)
    if [ ! "$inFile" = "$inFolder" ]; then
        whiptail --title $"Autorizzazioni di cartella condivisa non valide" --msgbox $"Avviso: le autorizzazioni della cartella condivisa non sono valide. Ciò potrebbe essere dovuto al fatto che hai importato cartelle condivise da un sistema precedente. È necessario selezionare nuovamente il livello di autorizzazione corretto per ogni cartella ora." 9 78
        for i in 1 2 3 4 5 6 7 8 9 10
        do
            ReplaceAnyTextOnLine /usr/local/bin/bindfs-mount "/home/shared/" ""
        done
        sed -i '/^[[:blank:]]*$/d' /usr/local/bin/bindfs-mount

        for f in $(ls -1 "/home/shared/")
        do
            SharedFolderPerm $f
            chown :root "/home/shared/$f"
        done
        SetupShared
    fi

}

addSharedFolderScript() {
#Adds the bindfs script which auto mounts the correct bind points and removes them when required (using stop)

rm -rf /etc/init.d/bindfs-mount

cat <<EOF1 >> /etc/init.d/bindfs-mount
#!/bin/bash
#Version=01
### BEGIN INIT INFO
# Provides:             Bindfs-mounts
# Required-Start:       \$syslog \$remote_fs
# Required-Stop:        \$syslog \$remote_fs
# Should-Start:         \$local_fs
# Should-Stop:          \$local_fs
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    Bindfs mounts for PiNet
# Description:          The shared folder Bindfs mounts for PiNet
### END INIT INFO

start() {
bash /usr/local/bin/bindfs-mount
}

stop() {
for i in \$(ls -1 /home/shared)
do
        umount -l /home/shared/\$i > /dev/null 2>&1
done
}


restart() {
    stop
    start
}

case "\$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        restart
        ;;
    *)
        echo "Usage: {start|stop|restart}"
        exit 1
        ;;
esac
exit

EOF1
chmod 755 /etc/init.d/bindfs-mount
update-rc.d bindfs-mount defaults
touch /usr/local/bin/bindfs-mount
service bindfs-mount restart > /dev/null 2>&1

}


CheckOS(){
    #Check the correct operating system is being used. Ubuntu is recommended and Debian is no longer supported.
    OS=$(lsb_release -si)
    if [ ! $OS == "Ubuntu" ]; then
        if [ $OS == "Debian" ]; then
            whiptail --title $"ATTENZIONE!!" --msgbox $"Debian non è più ufficialmente supportato da PiNet! Si prega di utilizzare Ubuntu 14.04 o successivo.La versione può variare con Debian e PiNet..." 8 78
        else
            whiptail --title $"ATTENZIONE!!" --msgbox $"Non riconosco questo sistema operativo. Si prega di utilizzare Ubuntu 14.04 o successivo.La versione può variare notevolmente con altre distribuzioni e non verrà fornito alcun supporto." 8 78
        fi
    fi
}

CheckTerminalSize(){
    #Resizes the terminal to the correct size for the menus
        eval `resize`
        if [ "$LINES" -le "28" ]; then
                a='\e[8;28;'
                b='t'
                printf "$a$COLUMNS$b"
        fi
        eval `resize`
        if [ "$COLUMNS" -le "90" ]; then
                a='\e[8;'
                b=';90t'
                printf "$a$LINES$b"
        fi
        sleep 0.5 # Time to allow the terminal to resize.
}

listStatus(){
    #Displays a status of the PiNet. Includes a status of all logged in users

while true; do
dpkg-query -s epoptes > /dev/null 2>&1
if [ $? -eq 0 ]; then
    local EPOPTES="True"
else
    local EPOPTES="False"
fi
local TEACHER=$(cat /etc/group | grep --regex "^teacher:.*" | awk -F: '{print $4}')
local RAM=$(top -bn1 | awk '/Mem/ { mem =  $5 / $3 * 100 }; END { print mem }')
#local CPU=$(bc <<< "scale=0; $(top -bn 1 | awk '{print $9}' | tail -n +8 | awk '{s+=$1} END {print s}') / $(grep -c ^processor /proc/cpuinfo)")
clear

GetInternalIPAddress
echo "           Stato del sistema PiNet"
echo "---------------------------------------------------"
echo "Versione corrente                      - $version"
echo "Indirizzo IP del server                      - $IP"
echo "---------------------------------------------------"
echo "È in esecuzione la versione $version da     - $(stat -c %y /usr/local/bin/pinet | cut -d ' ' -f1)"
echo "Ultima modifica della cartella Piboot             - $(stat -c %y /home/$SUDO_USER/PiBoot | cut -d ' ' -f1)"
echo "Ultimo aggiornamento a livello di sistema (aggiornamento-tutto)   - $(stat -c %y /var/lib/apt/periodic/update-success-stamp | cut -d ' ' -f1)"
echo "----------------"
echo "Uso del disco rigido (potrebbe essere inaccurato)"
echo "----------------"
echo "Spazio totale                            - $(df -h | sed -n 2p | awk '{print $2}')"
echo "Spazio utilizzato                             - $(df -h | sed -n 2p | awk '{print $3}')"
echo "Spazio libero                             - $(df -h | sed -n 2p | awk '{print $4}')"
echo "-----"
echo "Altro"
echo "-----"
echo "Utilizzo della CPU                              - $CPU%"
#echo "RAM usage                              - $(free -tom | grep 'Total:' | awk '{print $4}')MB / $(free -tom | grep 'Total:' | awk '{print $2}')MB"
echo "Epoptes installato                    - $EPOPTES"
echo "Insegnanti                       - $TEACHER"
echo "-----------------------"
echo "Attuali utenti attivi"
echo "-----------------------"
netstat -tnpa | grep ESTABLISHED.*sshd | awk '{ print $5 " - " $8 } '
echo ""
echo "Peremere invio per ritornare al menu principale"
read -t 2
if [ $? -eq 0 ]; then
   break
fi
done

}

CheckDesktopShortcut(){
    #Checks if the PiNet desktop shortcut exists. If not it adds it
checkInternet
if [ $? -eq 0 ]; then
    AddDesktopShortcutToUser $SUDO_USER

    if [ ! -f "/usr/share/pixmaps/pinet-icon.png" ] || [ ! -f "/opt/ltsp/armhf/usr/share/pixmaps/pinet-icon.png" ]; then
        wget $RawRepository/$ReleaseBranch/images/pinet-icon.png -O /tmp/pinet-icon.png
        cp /tmp/pinet-icon.png /usr/share/pixmaps/pinet-icon.png
        cp /tmp/pinet-icon.png /opt/ltsp/armhf/usr/share/pixmaps/pinet-icon.png
        UpdateConfig NBDBuildNeeded true
    fi

fi
}

AddDesktopShortcutToUser() {
#Adds desltop shortcut for PiNet if needed

if [ ! -f "/home/$1/Desktop/pinet.desktop" ]; then
    cat <<EOF1 >> /home/$1/Desktop/pinet.desktop
[Desktop Entry]
Version=3.0
Name=PiNet
Comment=PiNet Control Panel
Exec=sudo bash pinet
Icon=/usr/share/pixmaps/pinet-icon.png
Terminal=true
Type=Application
Categories=Utility;Application;
EOF1
    chmod +x "/home/$1/Desktop/pinet.desktop"
    chown "$1" "/home/$1/Desktop/pinet.desktop"
fi

if [ ! -f "/opt/ltsp/armhf/usr/local/bin/pinet" ]; then
    echo "ltsp-remoteapps gnome-terminal -x sh -c 'sudo bash pinet'" > /opt/ltsp/armhf/usr/local/bin/pinet
    UpdateConfig NBDBuildNeeded true
fi

}


teacherSudoCheck() {
#Checks if teachers have auto sudo (as in, no password asked each time). If not, it enables it (but requires a log out and in again to apply)
if [ ! -f "/etc/sudoers.d/01staff" ]; then
    rm -f /etc/sudoers.d/01staff
    touch /etc/sudoers.d/01staff
    chmod 440 /etc/sudoers.d/01staff
    echo '%teacher ALL=NOPASSWD: ALL' >> /etc/sudoers.d/01staff
fi
}


resetAndCleanup(){
#Resets the NBD server. Can sometimes help fix weird issues.
service nfs-kernel-server restart
sudo DEBIAN_FRONTEND=noninteractive dpkg-reconfigure nbd-server
sudo service nbd-server restart

}

AddPasswordReset(){
#Adds the password reset utility to the desktop of new users
    wget $RawRepository/$ReleaseBranch/Scripts/changePassword.sh -O /tmp/changePassword.sh
    wget $RawRepository/$ReleaseBranch/images/pinet-change-password.png -O /tmp/pinet-change-password.png
    cp /tmp/pinet-change-password.png /opt/ltsp/armhf/usr/share/pixmaps/pinet-change-password.png
    cp /tmp/changePassword.sh /usr/local/bin/changePassword.sh
    cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user
    do
        AddPasswordResetDesktop $user
    done

    if [ ! -f "/etc/skel/Desktop/pinet-password.desktop" ]; then
cat <<EOF1 >> /etc/skel/Desktop/pinet-password.desktop
[Desktop Entry]
Version=1.1
Name=Change Password
Comment=Change password
Exec=ltsp-remoteapps bash changePassword.sh
Icon=/usr/share/pixmaps/pinet-change-password.png
Terminal=false
Type=Application
Categories=Utility;Application;

EOF1
fi

}

AddPasswordResetDesktop(){
#Adds the password reset utility to the desktop of existing users with help of AddPasswordReset
if [ ! -f "/home/$1/Desktop/pinet-password.desktop" ]; then
cat <<EOF1 >> /home/$1/Desktop/pinet-password.desktop
[Desktop Entry]
Version=1.1
Name=Change Password
Comment=Change password
Exec=ltsp-remoteapps bash changePassword.sh
Icon=/usr/share/pixmaps/pinet-change-password.png
Terminal=false
Type=Application
Categories=Utility;Application;

EOF1
chown "$1" "/home/$1/Desktop/pinet-password.desktop"
fi

}

AddScreenshot(){
#Adds the screenshot utility to the desktop of new users
    wget $RawRepository/$ReleaseBranch/Scripts/pinet-screenshot.sh -O /tmp/pinet-screenshot.sh
    wget $RawRepository/$ReleaseBranch/images/pinet-screenshot.png -O /tmp/pinet-screenshot.png
    cp /tmp/pinet-screenshot.png /opt/ltsp/armhf/usr/share/pixmaps/pinet-screenshot.png
    cp /tmp/pinet-screenshot.sh /opt/ltsp/armhf/usr/local/bin/pinet-screenshot.sh
    chmod +x /opt/ltsp/armhf/usr/local/bin/pinet-screenshot.sh
    cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user
    do
        AddScreenshotDesktop $user
    done

    if [ ! -f "/etc/skel/Desktop/pinet-screenshot.desktop" ]; then
cat <<EOF1 >> /etc/skel/Desktop/pinet-screenshot.desktop
[Desktop Entry]
Version=1.0
Name=Take Screenshot
Comment=Take Screenshot
Exec=bash pinet-screenshot.sh
Icon=/usr/share/pixmaps/pinet-screenshot.png
Terminal=false
Type=Application
Categories=Utility;Application;

EOF1
fi

}

AddScreenshotDesktop(){
#Adds the screenshot utility to the desktop of existing users with help of AddScreenshot
if [ ! -f "/home/$1/Desktop/pinet-screenshot.desktop" ]; then
cat <<EOF1 >> /home/$1/Desktop/pinet-screenshot.desktop
[Desktop Entry]
Version=1.0
Name=Take Screenshot
Comment=Take Screenshot
Exec=bash pinet-screenshot.sh
Icon=/usr/share/pixmaps/pinet-screenshot.png
Terminal=false
Type=Application
Categories=Utility;Application;

EOF1
chown "$1" "/home/$1/Desktop/pinet-screenshot.desktop"
fi


}

CreateMoveBackup() {
#Create a full backup of all users and groups data for moving to a clean system
whiptail --title $"Attenzione" --yesno $"Questo processo è progettato solo per spostare i file utente su un'installazione Ubuntu completamente nuova in cui PiNet non è installato. Assicurati di verificare che tutti i dati utente siano stati importati correttamente sul nuovo server PiNet. Visita http://PiNet.org.uk/manage-users/migration.html per le istruzioni complete. Sei sicuro di voler procedere?" 11 78
if [ $? -eq 0 ]; then
    mkdir /root/move/
    export UGIDLIMIT=1000
    awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/passwd > /root/move/passwd.mig
    awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/group > /root/move/group.mig
    awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534) {print $1}' /etc/passwd | tee - |egrep -f - /etc/shadow > /root/move/shadow.mig
    cp /etc/gshadow /root/move/gshadow.mig
    rm /home/$SUDO_USER/toMove.tar.gz # Remove previous toMove.tar.gz file in case is already one there.
    tar -zcvpf /root/move/home.tar.gz /home
    tar -zcvpf /home/$SUDO_USER/toMove.tar.gz /root/move
    chown $SUDO_USER /home/$SUDO_USER/toMove.tar.gz
    rm -rf /root/move/
    whiptail --title $"Completato" --msgbox $"Il processo è ora completo. Un file zippato chiamato toMove.tar.gz è stato salvato in /home/$SUDO_USER/toMove.tar.gz. Si prega di copiare questo in /home/youruser/toMove.tar.gz nel nuovo server (via pendrive per esempio) quindi eseguire PiNet e selezionare Sì quando viene chiesto di importare gli utenti." 11 78
fi
}

CheckRestoreMoveBackup(){
#Checks if LTSP is already installed as importing user data with a server already running PiNet can cause issues..
if [ -f /home/$SUDO_USER/toMove.tar.gz ]; then
    if [ -d /opt/ltsp ]; then
        whiptail --title $"ATTENZIONE!!" --yesno $"PiNet potrebbe essere già installato! Si consiglia vivamente di non importare utenti da un'installazione di PiNet precedente. Sei stato avvertito! Vorresti importarli comunque?" 10 78
        if [ $? -eq 0 ]; then
            RestoreMoveBackup
        fi
    else
        RestoreMoveBackup
    fi

else

    whiptail --title $"Errore" --msgbox $"Il file zippato dei dati utente non può essere trovato in /home/$SUDO_USER/toMove.tar.gz." 8 78
fi
}

RestoreMoveBackup() {
#Restore full backup of all users and group data
whiptail --title $"Attenzione" --yesno $"L'importazione dovrebbe essere eseguita solo su un'installazione Ubuntu completamente nuova. PiNet o Raspi-LTSP non devono essere già installati. Assicurati di controllare manualmente che tutti i file siano stati copiati correttamente. Vuoi procedere?" 10 78
if [ $? -eq 0 ]; then
    if [ -f /home/$SUDO_USER/toMove.tar.gz ]; then
        $p importMigration "/home/$SUDO_USER/toMove.tar.gz"
        UpdateConfig "ImportedUsers" "true"
        return 0
    else
        whiptail --title $"Importazione fallita" --yesno $"L'importazione degli utenti è fallita, /home/$SUDO_USER/toMove.tar.gz non è stato trovato? Sei sicuro di averlo copiato in quella posizione? Riprovare?" 9 78
        if [ $? -eq 0 ]; then
            RestoreMoveBackup
        else
            exit
        fi
    fi
else
    exit
fi

}

InstallScratchGPIO(){
#Installs ScratchGPIO 5 by manually pushing an install script to each user
    whiptail --title $"Nota" --msgbox $"ScratchGPIO non può essere installato direttamente, ogni utente deve installarlo. Un collegamento sul desktop è stato aggiunto a ogni account utente chiamato \"Install ScratchGPIO\". Chiedi a ogni studente di eseguirlo la prima volta che desidera utilizzare il software." 10 78
    rm -rf /tmp/isgh7.sh
    rm -rf /opt/ltsp/armhf/usr/local/bin/isgh5.sh
    rm -rf /opt/ltsp/armhf/usr/local/bin/scratchSudo.sh
    rm -rf /opt/ltsp/armhf/usr/local/bin/isgh7.sh
    wget http://bit.ly/1wxrqdp -O /tmp/isgh7.sh
    cp /tmp/isgh7.sh  /opt/ltsp/armhf/usr/local/bin/isgh7.sh
    echo "bash /usr/local/bin/isgh7.sh \$SUDO_USER" > /opt/ltsp/armhf/usr/local/bin/scratchSudo.sh
    cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user
    do
    if [ ! -f "/home/$user/Desktop/Install-scratchGPIO.desktop" ]; then
cat <<EOF1 > /home/$user/Desktop/Install-scratchGPIO.desktop
[Desktop Entry]
Version=1.0
Name=Install ScratchGPIO
Comment=Install ScratchGPIO
Exec=sudo bash /usr/local/bin/scratchSudo.sh
Icon=scratch
Terminal=true
Type=Application
Categories=Utility;Application;

EOF1
chown "$user" "/home/$user/Desktop/Install-scratchGPIO.desktop"
fi
    done

if [ ! -f " /etc/skel/Desktop/Install-scratchGPIO.desktop" ]; then
cat <<EOF1 >  /etc/skel/Desktop/Install-scratchGPIO.desktop
[Desktop Entry]
Version=1.0
Name=Install ScratchGPIO
Comment=Install ScratchGPIO
Exec=sudo bash /usr/local/bin/scratchSudo.sh
Icon=scratch
Terminal=true
Type=Application
Categories=Utility;Application;
EOF1
fi



}

FirstTimeImportUsers(){
#Asks user if they want to import users on the first startup of PiNet
if [ ! -f /home/$SUDO_USER/Desktop/lxterminal.desktop ]; then
    whiptail --title $"Importazione degli utenti"  --defaultno --yesno $"Vorresti importare dati utente da un precedente server PiNet (o Raspi-LTSP)? Questo può essere fatto solo ora durante l'installazione. In caso di dubbio, selezionare no." 8 78
    if [ $? -eq 0 ]; then
        RestoreMoveBackup
    fi
fi
}

DisableI2C_SPI(){
#Disables both I2C and SPI to allow the pins to be used as general purpose IO
    if [ ! -f /opt/ltsp/armhf/etc/modprobe.d/raspi-blacklist.conf ]; then
        echo "blacklist spi-bcm2708
blacklist i2c-bcm2708 " > /opt/ltsp/armhf/etc/modprobe.d/raspi-blacklist.conf
    UpdateConfig NBDBuildNeeded true
    fi
}

DisableSPI(){
#Disables SPI (and enables I2C) to allow the SPI pins to be used as general purpose IO
    echo "blacklist spi-bcm2708" > /opt/ltsp/armhf/etc/modprobe.d/raspi-blacklist.conf
    UpdateConfig NBDBuildNeeded true
}

InstallBlueJ(){
#Install BlueJ java IDE. Part of AddSoftware
    rm -rf /tmp/bluej-314a.deb
    rm -rf /opt/ltsp/armhf/tmp/bluej-314a.deb
    wget http://bluej.org/download/files/bluej-314a.deb -O /tmp/bluej-314a.deb
    cp /tmp/bluej-314a.deb /opt/ltsp/armhf/tmp/bluej-314a.deb
    ltsp-chroot --arch armhf dpkg -i /tmp/bluej-314a.deb
}
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# IO SO ARRIVATO QUI, VAVA, 1000 RIGHE ME SO FATTO! 19:16 20/04/2019
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#

checkPythonFunctionsInstalled(){
#Checks the vital Python functions file is installed on the system. If not, it goes and downloads it from the web
    if [ ! -f $PythonFunctions ]; then
        wget $RawRepository/$ReleaseBranch/Scripts/pinet_functions_python.py -O $PythonFunctions
        if [ ! $? -eq 0 ]; then
            whiptail --title $"Errore!" --msgbox $"Scusa, c'è stato un errore critico con PiNet. Una libreria fondamentake non è stata acquisita. PiNet non può funzionare senza questa libreria. Il perchè del problema può essere che non sei connesso a internet. Per favore, scarica manualmente il file da http://bit.ly/pinet-fn e copialo in $PythonFunctions . Se il problema persiste, contatta il supporto a: http://PiNet.org.uk/support.html" 16 78
            rm -rf $PythonFunctions
            exit
        fi
    fi

}

checkKernelFileUpdateWeb(){
#Checks the web to see if the SD cards need updated with new kernel files
    $p checkKernelFileUpdateWeb
    KernelV=$(gp)
    if [ $KernelV = "1" ]; then
        current=$(head -n 1 /home/$SUDO_USER/PiBoot/version.txt)
        newVersion=$(head -n 1 /tmp/kernelVersion.txt)
        whiptail --title $"Kernel file update" --yesno $"Un aggiornamento importante è disponibile per i file del kernel Raspberry Pi (file sulle schede SD). Se si aggiorna, PiNet tenterà di caricare questi nuovi file sulle schede SD all'avvio. Questo aggiornamento è altamente raccomandato. Attualmente stai usando la versione $current e la versione più aggiornata è $newVersion. Ti piacerebbe procedere con un aggiornamento automatico dei file di avvio e del tuo server?" 12 78
        if [ $? -eq 0 ]; then
            whiptail --title $"Auto riavvio" --msgbox $"Il tuo Raspberry Pis tenterà di aggiornare automaticamente le loro schede SD (afferrando la versione dal server) al prossimo riavvio. Lo faranno in background e si riavvieranno al termine dell'aggiornamento ** senza preavviso **." 9 78
            installKernelUpdater ""
            UpdateSD
            UpdateAll
        fi
    fi


}

checkKernelUpdater(){
#Runs the installKernelUpdater
    installKernelUpdater $1

}

installKernelUpdater(){
    #Downloads new kernel files if required
    local compress=$1
    $p checkKernelUpdater
    exitstatus=$(gp)
    if [ "$exitstatus" = "1" ]; then
        if [ "$compress" = "NBD" ]; then
            echo "----------------------------------------------------------------------------------------------"
            echo $"È stato rilevato un aggiornamento per il programma di aggiornamento del kernel, che verrà applicato automaticamente"
            echo "----------------------------------------------------------------------------------------------"
            NBDRun
        fi
    fi

}

CheckRaspberryPiUIMods(){

    if [ ! -f "/opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/desktop-items-0.conf" ]; then
        InstallRaspberryPiUIMods
        UpdateConfig NBDBuildNeeded true
        return
    fi


    $p checkIfFileContainsString "/opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/pcmanfm.conf" "raspberrypi-artwork"
    exitstatus=$(gp)
    if [ "$exitstatus" = "1" ]; then
        InstallRaspberryPiUIMods
        UpdateConfig NBDBuildNeeded true
    else
        $p checkIfFileContainsString "/opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/desktop-items-0.conf" "raspberrypi-artwork"
        exitstatus=$(gp)
        if [ "$exitstatus" = "1" ]; then
            InstallRaspberryPiUIMods
            UpdateConfig NBDBuildNeeded true
        fi
    fi

}

FixUIConfigFile(){
    if [ $1 == "System" ]; then
        $p replaceLineOrAdd /opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/$2 wallpaper_mode= wallpaper_mode=stretch
        $p replaceLineOrAdd /opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/$2 wallpaper= wallpaper=/etc/alternatives/desktop-background
        $p replaceLineOrAdd /opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/$2 side_pane_mode= side_pane_mode=1
        $p replaceLineOrAdd /opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/$2 desktop_shadow= desktop_shadow=#000000
        $p replaceLineOrAdd /opt/ltsp/armhf/etc/xdg/pcmanfm/LXDE-pi/$2 desktop_fg= desktop_fg=#ffffff
    else
        $p replaceLineOrAdd /home/$3/.config/pcmanfm/LXDE-pi/$2 wallpaper_mode= wallpaper_mode=stretch
        $p replaceLineOrAdd /home/$3/.config/pcmanfm/LXDE-pi/$2 wallpaper= wallpaper=/etc/alternatives/desktop-background
        $p replaceLineOrAdd /home/$3/.config/pcmanfm/LXDE-pi/$2 side_pane_mode= side_pane_mode=1
        $p replaceLineOrAdd /home/$3/.config/pcmanfm/LXDE-pi/$2 desktop_shadow= desktop_shadow=#000000
        $p replaceLineOrAdd /home/$3/.config/pcmanfm/LXDE-pi/$2 desktop_fg= desktop_fg=#ffffff
    fi
}

CheckRaspberryPiUIModsAllUsers(){
    cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1 | while IFS= read -r user  #Gets all users
    do
        if [ -f "/home/$user/.config/pcmanfm/LXDE-pi/desktop-items-0.conf" ]; then
            FixUIConfigFile "User" "pcmanfm.conf" $user
            FixUIConfigFile "User" "desktop-items-0.conf" $user

            #$p replaceLineOrAdd /home/$user/.config/pcmanfm/LXDE-pi/desktop-items-0.conf wallpaper_mode= wallpaper_mode=stretch
            #$p replaceLineOrAdd /home/$user/.config/pcmanfm/LXDE-pi/desktop-items-0.conf wallpaper= wallpaper=/etc/alternatives/desktop-background
            #$p replaceLineOrAdd /home/$user/.config/pcmanfm/LXDE-pi/desktop-items-0.conf side_pane_mode= side_pane_mode=1
        fi
    done
    $p resetThemeCacheForAllUsers
}

InstallRaspberryPiUIMods(){
#Fixes the mistakes made in the wallpaper setting of RaspberryPi-UI-Mods
        #ltsp-chroot apt-get update
        #ltsp-chroot apt-get -o Dpkg::Options::="--force-confnew" install -y raspberrypi-ui-mods
        FixUIConfigFile "System" "pcmanfm.conf"
        FixUIConfigFile "System" "desktop-items-0.conf"
        CheckRaspberryPiUIModsAllUsers
}

ChooseReleaseChannelOld(){
    whiptail --title $"Release channels" --yesno --yes-button $"Stable" --no-button $"Development" $"Would you like to use the stable or development (dev) software update channels? Stable is recommended. Do not use the development (dev) channels in a production environment (for example a school) as stability is not guaranteed. " 10 78
    if [ $? -eq 0 ]; then
        UpdateConfig ReleaseChannel "Stable"
    else
        UpdateConfig ReleaseChannel "Dev"
    fi
    SetupRepositories
    if [ $1 = "Restart" ]; then
        exec /bin/bash pinet
        exit
    fi
}

ChooseReleaseChannel(){
    # Select a release channel (branch) for PiNet to use for software updates etc.
    $p "selectReleaseChannel"
    exitstatus=$(gp)
    SetupRepositories
    if [ $1 = "Restart" ]; then
        if [ "$exitstatus" = "1" ]; then
            # Invalidate previous package version caches to force them to be redownloaded
            rm "/opt/PiNet/pinet-package-versions.txt"
            rm "/opt/PiNet/PiBootBackup/apt_version.txt"

            # If the release channel has changed, restart PiNet software to check for updates etc
            Updater
        else
            Menu
        fi
    else
        Updater "IgnoreAfterUpdate" "$1"
    fi

}
GroupCheck(){
    #Checks if all users permissions are correct in groups. Front end for fixGroups
    whiptail --title $"Groupcheck" --msgbox $"Il controllo di gruppo passa attraverso ogni account utente controllando che gli vengano assegnati i gruppi corretti. Reimposta anche la configurazione dell'interfaccia utente. Può richiedere un pò di minuti se hai una grande quantità di utenti." 9 78
    fixGroups
    CheckRaspberryPiUIModsAllUsers
    whiptail --title $"Complete" --msgbox $"Tutti i gruppi di utenti sono stati controllati e, se necessario, corretti." 8 78
}

CheckForRaspiLTSP(){
    #Checks if Raspi-LTSP is installed and warns the user if it is.
    if [ -f /etc/raspi-ltsp ]; then
        whiptail --title $"Raspi-LTSP trovato!" --msgbox $"È stata trovata una precedente installazione Raspi-LTSP! PiNet e Raspi-LTSP non possono essere installati contemporaneamente! Si prega di reinstallare Ubuntu quindi eseguire PiNet." 9 78
        echo $"file di configurazione di Raspi-LTSP trovato in: /etc/raspi-ltsp"
        exit
    else
        if [ -d /opt/raspiLTSP ]; then
            whiptail --title $"Raspi-LTSP trovato!" --msgbox $"È stata trovata una precedente installazione Raspi-LTSP! PiNet e Raspi-LTSP non possono essere installati contemporaneamente! Si prega di reinstallare Ubuntu quindi eseguire PiNet." 9 78
            echo $"cartella di configurazione di Raspi-LTSP  in: /opt/raspiLTSP"
            exit
        fi
    fi
}


ImportUsersFromCSV(){
    whiptail --title $"Importa da CSV" --yesno $"PiNet supporta l'importazione di utenti da un file CSV. Molti sistemi di gestione degli utenti possono esportare un file CSV con nomi utente e password (o solo nomi utente). Il formato richiesto è 1a colonna è username e 2nd coloum è password. Se la colonna della password è vuota, verrà utilizzata una password predefinita selezionata. Vuoi continuare?" 11 78
    if [ $? -eq 0 ]; then
        whiptail --title $"Seleziona CSV" --msgbox $"Perfavore, ora seleziona il tuo file CSV." 9 78
        cd /home/$SUDO_USER
        local fileLoc=$(SingleFileSelect)
        if [ ! fileLoc = "L'utente cancellato :(" ]; then
            password=$(whiptail --inputbox $"Inserisci una password predefinita da utilizzare se non riesco a trovarne una." 8 78 --title $"Password" 3>&1 1>&2 2>&3)
            if [ password = "" ]; then
                whiptail --title $"Errore" --msgbox $"La casella password predefinita non può essere lasciata vuota!" 9 78
            else
                $p importFromCSV $fileLoc $password
            fi
        fi
    fi
}

DeleteUsersFromCSV(){
    whiptail --title $"Cancella da CSV" --yesno $"PiNet supporta l'eliminazione batch degli utenti da un file CSV. Il formato richiesto è 1a colonna è nome utente. Tutte le altre colonne vengono ignorate. Vuoi continuare?" 11 78
    if [ $? -eq 0 ]; then
        whiptail --title $"Seleziona CSV" --msgbox $"Seleziona ora il tuo file CSV." 9 78
        cd /home/$SUDO_USER
        fileLoc=$(SingleFileSelect)
        if [ ! fileLoc = "L'utente cancellato :(" ]; then
            $p usersCSVDelete $fileLoc False
        fi
    fi
}

CheckInstallSuccess(){
    if [ -d "/opt/ltsp/armhf/debootstrap" ]; then
        whiptail --title $"Errore di installazione" --msgbox $"È stato rilevato un problema con l'installazione PiNet! Il sistema operativo Raspbian è mancante o non è riuscito a installare correttamente. Ciò è più comunemente causato dai filtri Internet scolastici che bloccano gli archivi software o dalla mancata connessione Internet durante l'installazione. In questa fase si consiglia vivamente di eseguire una reinstallazione completa (compresa Ubuntu), se possibile, di una connessione Internet diversa. Se fallisce, contatta l'assistenza http://pinet.org.uk/articles/support.html" 14 78
        echo $"Potresti voler controllare i log di PiNet per aiutare a diagnosticare il problema. Possono essere trovati su /var/log/pinet.log."
        exit

    else
        $p verifyChrootIntegrity
    fi
}

CreatePartitionTable() {
  #Directly borrowed from Spindle - https://github.com/asb/spindle/blob/master/wheezy-stage0
  sudo parted $1 <<EOF
  unit b
  mklabel msdos
  mkpart primary fat32 $(expr 4 \* 1024 \* 1024) $(expr 60 \* 1024 \* 1024 - 1)
  print
  quit
EOF
}
CreateSDCardImageFile(){
    fileName="/tmp/pinet.img"
    dd if=/dev/zero of=$fileName bs=512 count=208845
    create_partition_table $fileName
    sudo mkdosfs -n PINET -S 512 -s 16 -v $fileName
    mkdir /mnt/sdimage
    mount $fileName /mnt/sdimage
    cp -r /home/$SUDO_USER/PiBoot/* /mnt/sdimage/
    umount /mnt/sdimage
    rm -r /mnt/sdimage
    mv $fileName /home/$SUDO_USER/pinetSDImage.img
}

CheckPipSymbolicLinkBug(){
    #Checks and fixes the pip3-2 symbolic link bug added in PiNet 1.1.1 and fixed in PiNet 1.1.4
    #if [ ! -h "/opt/ltsp/armhf/usr/bin/pip3" ] || [ ! -f "/opt/ltsp/armhf/usr/bin/pip3" ]; then
    #   ltsp-chroot apt-get purge -y python3-pip
    #   ltsp-chroot apt-get install -y python3-pip
    #   ltsp-chroot --arch armhf ln -sf /usr/bin/pip-3.2 /usr/bin/pip3
    #   UpdateConfig NBDBuildNeeded true
    #fi
    echo ""
}

CheckDebianVersion(){
    $p checkDebianVersion
    exitstatus=$(gp)
    if [ "$exitstatus" = "1" ]; then
        RebuildOS
    fi

}

CheckBackupScriptVersion(){
    if [ -f "/usr/local/bin/pinet-backup.sh" ]; then
        thirdLineCheck="if [ ! \$backupLoc = \"\" ]; then"
        currentThirdLine=$(sed '3q;d' /usr/local/bin/pinet-backup.sh)
        if [ "$thirdLineCheck" == "$currentThirdLine" ]; then
            createBackupScript
        fi
    fi

}

DuplicateLTSConf(){
    #Duplicate the lts.conf from /opt/ltsp/armhf/etc/lts.conf to /var/lib/tftpboot/ltsp/armhf/lts.conf
    cp /opt/ltsp/armhf/etc/lts.conf /var/lib/tftpboot/ltsp/armhf/lts.conf

}

WheezyJessieUpgradePartTwo(){
    ChooseReleaseChannel "NoRestart"
    exec /bin/bash pinet "Wheezy-upgrade-part-three"
    exit
}

WheezyJessieUpgradePartThree(){
    # Delete old pinet-functions-python.py file (has been replaced by pinet_functions_pinet.py and start OS rebuild.
    rm /usr/local/bin/pinet-functions-python.py
    RebuildOS
    $p resetThemeCacheForAllUsers
    #UpdateAll
}

GetInternalIPAddress(){
    # Gets the current internal IP address and sets the $IP variable to it.
    $p getInternalIPAddress
    IP=$(gp)
}

#***************************************************************************************************
backupDeleteTime(){
  MENUEPT=$(whiptail --menu $"How long would you like to store backups? Note this only runs when a backup runs." --nocancel 20 85 10 \
    "10 giorni" $"I backup verranno conservati per 10 giorni, quindi cancellati" \
    "30 giorni" $"I backup verranno conservati per 30 giorni, quindi cancellati " \
    "90 giorni" $"I backup saranno conservati per 90 giorni e poi cancellati" \
    "Per Sempre" $"Cancellero i miei backups manualmente" \
    3>&1 1>&2 2>&3)

case "$MENUEPT" in
    Ten-Days)
    DELETETIME=10
    ;;
    Thirty-Days)
    DELETETIME=30
    ;;
    Ninety-Days)
    DELETETIME=90
    ;;
    Forever)
    DELETETIME=9999
    ;;
    *)
    removeAnacronLines
    rm -rf /usr/local/bin/pinet-backup.sh
    Menu
    ;;

esac
}


#***************************************************************************************************
backupFrequency(){
  MENUEPT=$(whiptail --menu $"How often should PiNet create a backup?" --nocancel 20 85 10 \
    "Every-day" $"Will create a new backup every day" \
    "Twice-weekly" $"Will create a backup on Tuesday and Thursday" \
    "Once-a-week" $"Will create a backup every Friday" \
    3>&1 1>&2 2>&3)

case "$MENUEPT" in
    Every-day)
    removeAnacronLines
    echo "1       15      PiNet.backup1      /bin/sh /usr/local/bin/pinet-backup.sh" >> /etc/anacrontab

    ;;
    Twice-weekly)
    removeAnacronLines
    echo "3       15      PiNet.backup1      /bin/sh /usr/local/bin/pinet-backup.sh" >> /etc/anacrontab
    ;;
    Once-a-week)
    removeAnacronLines
    echo "1       15      PiNet.backup1      /bin/sh /usr/local/bin/pinet-backup.sh" >> /etc/anacrontab
    ;;
    *)
    removeAnacronLines
    rm -rf /usr/local/bin/pinet-backup.sh
    Menu
    ;;

esac
}



#***************************************************************************************************
OtherMenu() {
#
 #
 #
 #
 #
 #
 #      BRUH, 24/4/2019
 #
 #
 #
 #

  MENUEPT=$(whiptail --title $"Other Submenu" --cancel-button $"Main Menu" --ok-button $"Select" --menu $"What would you like to do?" 20 85 10 \
    "Refresh-System" $"Refreshes network services. Useful if having boot issues" \
    "Custom-config" $"Customise the config.txt file on the SD cards." \
    "NBD-recompress" $"Force an NBD compress if changes are made outside PiNet" \
    "NBD-compress-disable" $"Disable auto NBD recompression after every change" \
    "NBD-compress-enable" $"Enable auto NBD recompression after every change (default)" \
    "Export-users" $"Export all user data for migrating to new PiNet server" \
    "Change-release-channel" $"Change your current update channel to dev or stable" \
    "Edit-Information" $"Edit information attached to the PiNet server" \
    "Full-Install" $"Full install of PiNet server" \
    3>&1 1>&2 2>&3)

#<<COMMENT1
#if [$MENUOPT -eq 0]; then
case "$MENUEPT" in
    Collect-work)
    CollectWork
    Menu
    ;;
    NBD-compress-disable)
    UpdateConfig NBDuse false
    ConfigFileRead
    Menu
    ;;
    NBD-compress-enable)
    UpdateConfig NBDuse true
    ConfigFileRead
    Menu
    ;;
    Custom-config)
    $p "customConfig"
    ConfigFileRead
    if [ "$NBDBuildNeeded" = "true" ]; then
        NBDRun
    fi
    Menu
    ;;
    NBD-recompress)
    local CurrentNBD=$NBDuse
    UpdateConfig NBDuse true
    NBDRun
    UpdateConfig NBDuse $CurrentNBD
    ConfigFileRead
    Menu
    ;;
    Refresh-System)
    resetAndCleanup
    Menu
    ;;
    Export-users)
    CreateMoveBackup
    Menu
    ;;
    Edit-Information)
    $p "askExtraStatsInfo"
    Menu
    ;;
    Change-release-channel)
    ChooseReleaseChannel "Restart"
    ;;
    Full-Install)
    if [ -d /opt/ltsp/armhf ]; then
        whiptail --title $"Error" --yesno $"An LTSP install has been detected.. Not recommended to continue. Should PiNet continue?" 8 78
    exitstatus=$?
    if [ $exitstatus = 0 ]; then
            echo ""
    else
        Menu
    fi
fi
    FullInstall
Menu
    ;;
    *)
    Menu
    ;;

esac

} #***************************************************************************************************

SharedFolderMenu() {

  MENUEPT=$(whiptail --title $"Shared folders" --cancel-button $"Main Menu" --ok-button $"Select" --menu $"What would you like to do?" 20 85 10 \
    "Create-Shared-Folder" $"Create a new shared folder" \
    "Remove-Shared-Folder" $"Remove a shared folder" \
    "Change-Permissions" $"Changes shared folder permissions" \
    "Display-Shared-Folders" $"Display a list of all shared folders" \
    "Add-Teacher" $"Add a new account to the teacher group" \
    3>&1 1>&2 2>&3)

case "$MENUEPT" in
    Create-Shared-Folder)
    CreateSharedFoldersDialog
    Menu
    ;;
    Remove-Shared-Folder)
    RemoveSharedFolder
    Menu
    ;;
    Change-Permissions)
    SharedFolderPerm
    Menu
    ;;
    Display-Shared-Folders)
    DisplaySharedFolders
    ;;
    Add-Teacher)
    AddTeacher
    Menu
    ;;
    *)
    Menu
    ;;

esac

} #***************************************************************************************************

EpoptesMenu() {

  MENUEPT=$(whiptail --title $"Epoptes Submenu" --cancel-button $"Main Menu" --ok-button $"Select" --menu $"Epoptes classroom management software is a free, open source and easy to use computer lab management and monitoring tool. What would you like to do?" 20 80 10 \
    "Install-Epoptes" $"Install Epoptes onto the server and Raspberry Pis" \
    "Epoptes-launch" $"Launches Epoptes, it must be installed first though" \
    "Add-Teacher" $"Add a new account to the teacher group" \
    "Remove-epoptes" $"Uninstall Epoptes from the server and Raspberry Pis" \
    3>&1 1>&2 2>&3)

case "$MENUEPT" in
    Install-Epoptes)
    checkInternet
    if [ $? -eq 0 ]; then
        whiptail --title $"Epoptes install" --yesno $"I am now going to install Epoptes classroom management software on the server and Raspberry Pis. Would you like to continue?" 8 78
        if [ $? -eq 0 ];then

            EpoptesInstaller
            NBDRun
        fi
    else
        whiptail --title $"Error" --msgbox $"No internet connection, unable to proceed..." 8 78
    fi
    Menu
    ;;
    Epoptes-launch)
    EpoptesRun
    Menu
        ;;
    Add-Teacher)
    AddTeacher
    Menu
    ;;
    Remove-epoptes)
    ltsp-chroot --arch armhf apt-get remove -y epoptes-client
    ltsp-chroot --arch armhf apt-get -y autoremove
    NBDRun
    whiptail --title $"Epoptes" --msgbox $"Epoptes has been removed from the pi image" 16 78
    Menu
    ;;
    *)
    Menu
    ;;

esac
}

#***************************************************************************************************
##### WIP ##########################
BackupMenu() {

  MENUEPT=$(whiptail --title $"Backup Submenu" --cancel-button $"Main Menu" --ok-button $"Select" --menu $"What would you like to do?" 20 80 10 \
    "Configure-backup" $"Configure and enable backups. Also use to make changes" \
    "Disable-backup" $"Disables backup daemon, old backups will not be deleted" \
    "Display-Logs" $"Displays logs for the backup daemon, check these regularly!" \
    3>&1 1>&2 2>&3)

#<<COMMENT1
#if [$MENUOPT -eq 0]; then
case "$MENUEPT" in
    Configure-backup)
    whiptail --title $"Select Location" --msgbox $"Select the location where you wish to save the backups. An external hard drive is highly recommended! Even a large (16gb+) pendrive should be sufficient. In Linux external drives are attached in /media so you will start there. Do not save backups on the same hard drive as the /home folder!" 12 78
    cd /media
    fileSelect
    exit=$?
    if [ "$exit" = "1" ]; then
        Menu
    else
        $p setConfigParameter backupLoc "$location/"
        backupFrequency
        backupDeleteTime
        createBackupScript
        currentDate=`date +"%d-%m-%y"`
        currentTime=`date +"%H:%M"`
        logger -s "$currentDate $currentTime - Backup configured. Folder chosen is $location" 2>> /var/log/PiNet-backup.log
        whiptail --title $"Backup setup" --msgbox $"The backup is now configured, the logs can be viewed at any time by checking /var/log/PiNet-backup.log" 12 78
    fi
    Menu
    ;;
    Disable-backup)
    rm -rf /usr/local/bin/pinet-backup.sh
    removeAnacronLines
    currentDate=`date +"%d-%m-%y"`
    currentTime=`date +"%H:%M"`
    logger -s "$currentDate $currentTime - Backup disabled from PiNet" 2>> /var/log/PiNet-backup.log
    whiptail --title $"Backup disabled" --msgbox $"The backup daemon has now been disabled, no more backups will be performed till it is enabled again with Configure-backup. All old backups have been kept." 12 78
    Menu
    ;;
    Display-Logs)
    clear
    echo "-------------------"
    echo $"PiNet log file"
    echo "-------------------"
    echo " "
    echo "$(cat /var/log/PiNet-backup.log)"
    echo " "
    echo $"Hit enter to continue"
    read
    Menu
    ;;
    *)
    Menu
    ;;

esac

}

##### WIP ##########################

#***************************************************************************************************
UserGroups() {

  MENUEPT=$(whiptail --title $"Manage-users Submenu" --cancel-button $"Main Menu" --ok-button $"Select" --menu $"What would you like to do?" 20 80 11 \
    "Add-user" $"Add a new Linux user" \
    "Remove-user" $"Remove a Linux user" \
    "Change-password" $"Change password of a user" \
    "Display-users" $"List all the users on the system" \
    "Add-teacher" $"Add user to the staff permission group" \
    "Import-Users" $"Import usernames and passwords from a CSV file" \
    "Delete-Batch" $"Batch delete users from a CSV file" \
    "Change-Sudo" $"Change student sudo permissions. Used for GPIO access" \
    "Group-check" $"Checks all users are in the correct system groups" \
    "Export-users" $"Export all user data for migrating to new PiNet server" \
    3>&1 1>&2 2>&3)

case "$MENUEPT" in
    Add-user)
    AddUsers
    Menu
    ;;
    Remove-user)
    RemoveUser
    Menu
    ;;
    Change-password)
    ChangeUserPassword
    Menu
    ;;
    Display-users)
    DisplayUsers
    ;;
    Group-check)
    GroupCheck
    Menu
    ;;
    Add-teacher)
    AddTeacher
    Menu
    ;;
    Import-Users)
    ImportUsersFromCSV
    ;;
    Delete-Batch)
    DeleteUsersFromCSV
    ;;
    Graphics-fix)
    fixGroups
    Menu
    ;;
    Change-Sudo)
    SudoMenu
    if [ "$NBDBuildNeeded" = "true" ]; then
        NBDRun
    fi
    Menu
    ;;

    Remove-Samab-user)
    user=$(whiptail --inputbox "Enter the username of the user you wish to remove from Samba" 8 78 $INIT --title "Samba" 3>&1 1>&2 2>&3)
    pdbedit -u "$user" -xl
    whiptail --title "Samba" --msgbox 'User has been removed from samba. ' 12 78
    Menu
    ;;
    Export-users)
    CreateMoveBackup
    Menu
    ;;
    *)
    Menu
    ;;

esac
} #***************************************************************************************************


FullInstall(){
  checkInternetDetailed
  if [ $? -eq 0 ]; then
        ConfigFileRead
        if [ "$ImportedUsers" = "" ]; then
            FirstTimeImportUsers
        fi
        if [ "$ReleaseChannel" = "" ]; then
            ChooseReleaseChannel 1
        fi
        $p initialInstallSoftwareList
        whiptail --title $"Full Install" --msgbox $"A full install will take around 1-2 hours depending on your Internet speed. There will be a number of options to select at the end so do not close this terminal until the install has completed!" 10 78
        installLTSP   #Installs LTSP and other packages required to build an Raspberry Pi OS
        buildClient   #Creates config file to build Raspbian with LTSP and builds it
        OneTimeFixes   #Runs some one off config changes, these are not repeated at any time later
        #PiConfigFixes   #Adds configuration changes to LXDE and installs Raspi artwork
        configFixes   #Main configuration changes that are run on the the LTSP chroot (/opt/ltsp/armhf). These must be run every time the image is generated
        FixRepo   #Adds additional repositories to the Raspbian build
        AddSoftware   #Adds all the custom software on top of a normal Armhf Debian Wheezy build
        RaspiTheme   #Installs the PiNet theme which can be seen at login
        FixDesktopIcons   #Adds desktop icons
        InstallRaspberryPiUIMods
        EnableNBDswap   #Enables NBD swap for if the Pi runs out of RAM, it can use server as RAM using NBD
        UpdateConfig NBD false
        UpdateConfig NBDuse false
        $p installSoftwareFromFile
        DisableSPI
        SudoMenu   #Asks the user if they wish to enable Sudo for the pupils
        UpdateSD "NoRecompress"   #Runs the IP address selector and builds the SD card image
        addSoundcardDefault
        SetupSharedStandalone
        installKernelUpdater ""
        $p checkKernelFileUpdateWeb
        fixGroups "NoRecompress"   #Adds all current users to the correct groups.
        DuplicateLTSConf
        usermod -a -G teacher $SUDO_USER
        LegacyFixes "NoRecompress"
        AddSoftware
        EnableNBD #Enables NBD compression
        resetAndCleanup
        $p triggerInstall
        CheckInstallSuccess

        whiptail --title "Main installation complete" --msgbox "PiNet main installation is now complete. There may be a few other minor updates that will be applied now. You will need to flash an SD card with the PiNet boot files, instructions can be found at http://pinet.org.uk/articles/installation/sd-card-copy.html. Then plug the Raspberry Pi into the network and boot it up." 11 78
    else
        whiptail --title "Error" --msgbox "The installation has been cancelled due to a problem accessing key domains used in the installation." 8 78
        echo "The installation has been cancelled due to a problem accessing key domains used in the installation."
        exit 1
    fi
}

RebuildOS(){
checkInternet
if [ $? -eq 0 ]; then
            rm -rf /opt/ltsp/armhf
            rm -rf /var/lib/tftpboot/ltsp/armhf
            $p initialInstallSoftwareList
            buildClient
            configFixes
            FixRepo
            AddSoftware
            RaspiTheme
            FixDesktopIcons   #Adds desktop icons
            InstallRaspberryPiUIMods
            EnableNBDswap
            #whiptail --title $"Extra software" --msgbox $"Select any additional software you want to use or use Install-Custom-software to install a specific package from the Raspbian apt repository if you know its name. To quit the menu, use the cancel option. This menu can be later accessed from Install-Program from the main menu." 12 78
            $p installSoftwareFromFile
            DisableSPI
            SudoMenu   #Asks the user if they wish to enable Sudo for the pupils
            UpdateSD "NoRecompress"
            addSoundcardDefault
            SetupSharedStandalone
            installKernelUpdater ""
            $p checkKernelFileUpdateWeb
            fixGroups "NoRecompress"
            DuplicateLTSConf
            LegacyFixes "NoRecompress"
            AddSoftware
            EnableNBD
            resetAndCleanup
            CheckInstallSuccess
            whiptail --title $"Rebuild complete" --msgbox $"PiNet rebuild is now complete. You will need to flash an SD card with the PiNet boot files, instructions can be found at http://pinet.org.uk/articles/installation/sd-card-copy.html. Then plug the Raspberry Pi into the network and boot it up." 10 78
        else
            whiptail --title $"Error" --msgbox $"No internet connection, unable to proceed..." 8 78
        fi

}


Menu() {
GetInternalIPAddress
  MENUOPT=$(whiptail --title $"PiNet $version Main Menu - $IP" --cancel-button $"Quit" --ok-button $"Select" --menu $"What would you like to do?" 22 80 14 \
    "System-Status" $"Display status of key parts of your PiNet server" \
    "Install-Program" $"Install a new program on the Raspberry Pi's" \
    "Manage-Users" $"Add new users, change passwords and delete users" \
    "Update-All" $"Run an automatic update on server and Raspbian" \
    "Backup-Menu" $"User files backup submenu" \
    "Shared-Folders" $"Manage and create shared folders" \
    "Collect-work" $"Collects students work in a single folder" \
    "Update-SD" $"Update the SD card image. This includes IP address changes" \
    "Rebuild-OS" $"Rebuilds the LTSP Raspberry Pi image from scratch again" \
    "Epoptes-Menu" $"Epoptes classroom management submenu" \
    "Troubleshooter" $"Having issues? Try running the troubleshooter" \
    "Other" $"Other options and utilities for management" \
    "Update-PiNet" $"Forces PiNet to update itself" \
    3>&1 1>&2 2>&3)

case "$MENUOPT" in
    System-Status)
    listStatus
    Menu
    ;;
Update-SD)
    UpdateSD
    if [ $? -eq 0 ]; then
        whiptail --title $"SD image updated" --msgbox $"SD card image updated. A folder of boot files in /home/$SUDO_USER/PiBoot has been created. An experimental disk image ready to flash onto the SD card has also been created at /home/$SUDO_USER/pinetSDImage.img. You can use either option. See http://pinet.org.uk/articles/installation/sd-card-copy.html for help." 11 78
    fi
    Menu
    ;;
Install-Program)
    $p installSoftwareList
    Menu
    ;;
Shared-Folders)
    SharedFolderMenu
    Menu
    ;;
Rebuild-OS)
    whiptail --title $"WARNING!!" --yesno $"Warning, you are about to delete the entire Raspbian OS from the server and rebuild it. Students files are not affected but any custom programs added will need to be re-added. This will take 1-2 hours. Are you sure?" 9 78

    exitstatus=$?
    if [ $exitstatus = 0 ]; then
        RebuildOS
    fi
    Menu
    ;;
Backup-Menu)
    whiptail --title "WARNING" --msgbox 'WARNING - The backup system in PiNet is currently in alpha, you are responsible to check backups are correctly being made and checking the log file frequently. To check the log file, select Display-Logs in the Backup submenu!' 12 78
    BackupMenu
    ;;
Manage-Users)
    UserGroups
    Menu
    ;;
Install-Epoptes)
    EpoptesInstaller
    Menu
    ;;
Update-All)
    UpdateAll
    Menu
    ;;
Epoptes-Menu)
    EpoptesMenu
    ;;
Collect-work)
    CollectWork
    Menu
    ;;
Other)
    OtherMenu

    ;;
Troubleshooter)
    TroubleShooter
    Menu
    ;;
Update-PiNet)
    Updater
    ;;
    *)
    exit
    ;;
    esac


}



#************************************* Startup stuff **************************************************************

if [ "$(id -u)" != "0" ]; then  #Check if script is being run as root
   echo $"This script must be run as root" 1>&2
   exit 1
fi

if [ ! "$BASH_VERSION" ] ; then   #Checks that PiNet is being run using bash and not ash (aka sh)
    whiptail --title $"Shell error" --msgbox $"Please do not run PiNet with sudo sh $0. Please run it with bash using     sudo bash $0" 8 78
    echo $"Please do not run PiNet with sh $0. Please run it with bash using     sudo bash $0" 1>&2
    exit 1
fi
CheckOS   #Checks if running Ubuntu, if not complains a little
if [ "$SUDO_USER" = "" ]; then
    SUDO_USER=$(whiptail --inputbox $"No user in the SUDO_USER variable was detected. This occurs when you didn't launch the application with sudo. Please enter your normal Linux username." 9 78 --title $"Unsupported operating system" 3>&1 1>&2 2>&3)  #Sometimes can't detect username to run program as.
fi

checkInstallLoc   #Checks PiNet is installed in /usr/local/bin. If not offer to move it

echo $"Starting PiNet - Please wait"
checkPythonFunctionsInstalled  #Checks the supporting Python functions are installed correctly
CheckForRaspiLTSP
VerifyPythonPackages

CheckTerminalSize  #Changes the terminal to the minimum size if is too small

case "$1" in  #Checks if PiNet needs to run an update all, usually run after an update when the software is launched by itself
Update-All)
    UpdateSD
    UpdateAll
    ;;
SD-card-update)
    UpdateSD
    ;;
Wheezy-upgrade-part-two)
    WheezyJessieUpgradePartTwo
    ;;
Wheezy-upgrade-part-three)
    WheezyJessieUpgradePartThree
    ;;
esac

if [ ! -d /opt/ltsp/armhf ]; then   # Check if PiNet is installed. If not, offer to install
        whiptail --title $"Welcome" --yesno $"Welcome to PiNet. No previous PiNet installation is detected, would you like to run the full PiNet installer? " 8 78
        exitstatus=$?
        if [ $exitstatus = 0 ]; then
            UpdateConfig FirstUser $SUDO_USER
            FullInstall
        else
            Menu
        fi
fi
ConfigFileRead  #Reads the main configuration file (/etc/pinet) and loads all values in as environmental variables

if [ "$ReleaseChannel" = "" ]; then   #Makes sure a release channel is selected, if not asks for one
    ChooseReleaseChannel "Restart"
fi

SetupRepositories #Sets up the correct branch variables as selected in ChooseReleaseChannel()

checkInternet #Checks if PiNet server has a web connection. If so, checks for updates on PiNet, PiNet kernels and PiNet kernel updater
if [ $? -eq 0 ]; then
    if [ ! "$DisableUpdateChecking" = "true" ]; then
            CheckReleases
            checkKernelFileUpdateWeb
            checkKernelUpdater "NBD"
    fi
fi
fixGroups #Verify all groups are set up correctly with correct users
LegacyFixes #Makes sure all configuration data is correctly configured
CheckInstallSuccess
Menu #Runs main menu