RASCSI/easyinstall.sh

#!/usr/bin/env bash

# BSD 3-Clause License
# Author @sonique6784
# Copyright (c) 2020, sonique6784

function showRaSCSILogo(){
logo="""
    .~~.   .~~.\n
  '. \ ' ' / .'\n
   .╔═══════╗.\n
  : ║|¯¯¯¯¯|║ :\n
 ~ (║|_____|║) ~\n
( : ║ .  __ ║ : )\n
 ~ .╚╦═════╦╝. ~\n
  (  ¯¯¯¯¯¯¯  ) RaSCSI Assistant\n
   '~ .~~~. ~'\n
       '~'\n
"""
echo -e $logo
}

function showMacNetworkWired(){
logo="""
                              .-~-.-~~~-.~-.\n
 ╔═══════╗                  .(              )\n
 ║|¯¯¯¯¯|║                 /               \`.\n
 ║|_____|║>--------------<~               .   )\n
 ║ .  __ ║                 (              :'-'\n
 ╚╦═════╦╝                  ~-.________.:'\n
  ¯¯¯¯¯¯¯\n
"""
echo -e $logo
}

function showMacNetworkWireless(){
logo="""
                              .-~-.-~~~-.~-.\n
 ╔═══════╗        .(       .(              )\n
 ║|¯¯¯¯¯|║  .(  .(        /               \`.\n
 ║|_____|║ .o    o       ~               .   )\n
 ║ .  __ ║  '(  '(        (              :'-'\n
 ╚╦═════╦╝        '(       ~-.________.:'\n
  ¯¯¯¯¯¯¯\n
"""
echo -e $logo
}

BASE="$HOME/RASCSI"
VIRTUAL_DRIVER_PATH="$HOME/images"
CFG_PATH="$HOME/.config/rascsi"
WEBINSTDIR="$BASE/src/web"
HFS_FORMAT=/usr/bin/hformat
HFDISK_BIN=/usr/bin/hfdisk
LIDO_DRIVER=$BASE/lido-driver.img
GIT_BRANCH=$(git rev-parse --abbrev-ref HEAD)
GIT_REMOTE=${GIT_REMOTE:-origin}

set -e

function initialChecks() {
    currentUser=$(whoami)
    if [ "pi" != "$currentUser" ]; then
        echo "You must use 'pi' user (current: $currentUser)"
        exit 1
    fi

    if [ ! -d "$BASE" ]; then
        echo "You must checkout RASCSI repo into $BASE"
        echo "$ git clone git@github.com:akuker/RASCSI.git"
        exit 2
    fi
}

# install all dependency packages for RaSCSI Service
function installPackages() {
    sudo apt-get update && sudo apt-get install git libspdlog-dev libpcap-dev genisoimage python3 python3-venv nginx libpcap-dev protobuf-compiler bridge-utils python3-dev libev-dev libevdev2 -y </dev/null
}

# compile and install RaSCSI Service
function installRaScsi() {
    stopRaScsiScreen
    stopRaScsi

    if [ -f /etc/systemd/system/rascsi.service ]; then
        sudo cp /etc/systemd/system/rascsi.service /etc/systemd/system/rascsi.service.old
        SYSTEMD_BACKUP=true
        echo "Existing version of rascsi.service detected; Backing up to rascsi.service.old"
    else
        SYSTEMD_BACKUP=false
    fi

    cd "$BASE/src/raspberrypi" || exit 1

    ( make clean && make all CONNECT_TYPE="${CONNECT_TYPE-FULLSPEC}" && sudo make install CONNECT_TYPE="${CONNECT_TYPE-FULLSPEC}" ) </dev/null

    if [[ `sudo grep -c "rascsi" /etc/sudoers` -eq 0 ]]; then
        sudo bash -c 'echo "
# Allow the web server to restart the rascsi service
www-data ALL=NOPASSWD: /bin/systemctl restart rascsi.service
www-data ALL=NOPASSWD: /bin/systemctl stop rascsi.service
# Allow the web server to reboot the raspberry pi
www-data ALL=NOPASSWD: /sbin/shutdown, /sbin/reboot
" >> /etc/sudoers'
    else
        echo "The sudoers file is already modified for rascsi-web."
    fi

    sudo systemctl daemon-reload
    sudo systemctl restart rsyslog
    sudo systemctl enable rascsi # optional - start rascsi at boot
    sudo systemctl start rascsi

    startRaScsiScreen
}

# install everything required to run an HTTP server (Nginx + Python Flask App)
function installRaScsiWebInterface() {
    if [ -f "$WEBINSTDIR/rascsi_interface_pb2.py" ]; then
        rm "$WEBINSTDIR/rascsi_interface_pb2.py"
	echo "Deleting old Python protobuf library rascsi_interface_pb2.py"
    fi
    echo "Compiling the Python protobuf library rascsi_interface_pb2.py..."
    protoc -I="$BASE/src/raspberrypi/" --python_out="$WEBINSTDIR" rascsi_interface.proto

    sudo cp -f "$BASE/src/web/service-infra/nginx-default.conf" /etc/nginx/sites-available/default
    sudo cp -f "$BASE/src/web/service-infra/502.html" /var/www/html/502.html

    sudo usermod -a -G pi www-data

    sudo systemctl reload nginx || true

    echo "Installing the rascsi-web.service configuration..."
    sudo cp -f "$BASE/src/web/service-infra/rascsi-web.service" /etc/systemd/system/rascsi-web.service

    sudo systemctl daemon-reload
    sudo systemctl enable rascsi-web
    sudo systemctl start rascsi-web
}

function installRaScsiScreen() {
    echo "IMPORTANT: This configuration requires a OLED screen to be installed onto your RaSCSI board."
    echo "See wiki for more information: https://github.com/akuker/RASCSI/wiki/OLED-Status-Display-(Optional)"
    echo ""
    echo "Do you want to use the recommended screen rotation (180 degrees)?"
    echo "Press Y/n and Enter, or CTRL-C to exit"
    read REPLY

    if [ "$REPLY" == "N" ] || [ "$REPLY" == "n" ]; then
        echo "Proceeding with 0 degrees rotation."
        ROTATION="0"
    else
        echo "Proceeding with 180 degrees rotation."
        ROTATION="180"
    fi

    stopRaScsiScreen
    updateRaScsiGit

    sudo apt-get update && sudo apt-get install python3-dev python3-pip python3-venv libjpeg-dev libpng-dev libopenjp2-7-dev i2c-tools raspi-config -y </dev/null

    if [ -f "$BASE/src/oled_monitor/rascsi_interface_pb2.py" ]; then
        rm "$BASE/src/oled_monitor/rascsi_interface_pb2.py"
        echo "Deleting old Python protobuf library rascsi_interface_pb2.py"
    fi
    echo "Compiling the Python protobuf library rascsi_interface_pb2.py..."
    protoc -I="$BASE/src/raspberrypi/" --python_out="$BASE/src/oled_monitor" rascsi_interface.proto

    if [[ $(grep -c "^dtparam=i2c_arm=on" /boot/config.txt) -ge 1 ]]; then
        echo "NOTE: I2C support seems to have been configured already."
        REBOOT=0
    else
        sudo raspi-config nonint do_i2c 0 </dev/null
        echo "Modified the Raspberry Pi boot configuration to enable I2C."
        echo "A reboot will be required for the change to take effect."
        REBOOT=1
    fi

    echo "Installing the monitor_rascsi.service configuration..."
    sudo cp -f "$BASE/src/oled_monitor/monitor_rascsi.service" /etc/systemd/system/monitor_rascsi.service
    sudo sed -i /^ExecStart=/d /etc/systemd/system/monitor_rascsi.service
    sudo sed -i "8 i ExecStart=$BASE/src/oled_monitor/start.sh --rotation=$ROTATION" /etc/systemd/system/monitor_rascsi.service

    sudo systemctl daemon-reload
    sudo systemctl enable monitor_rascsi

    if [ $REBOOT -eq 1 ]; then
        echo ""
        echo "The monitor_rascsi service will start on the next Pi boot."
        echo "Press Enter to reboot or CTRL-C to exit"
        read

        echo "Rebooting..."
        sleep 3
        sudo reboot
    fi

    sudo systemctl start monitor_rascsi
}

function createImagesDir() {
    if [ -d "$VIRTUAL_DRIVER_PATH" ]; then
        echo "The $VIRTUAL_DRIVER_PATH directory already exists."
    else
        echo "The $VIRTUAL_DRIVER_PATH directory does not exist; creating..."
        mkdir -p "$VIRTUAL_DRIVER_PATH"
        chmod -R 775 "$VIRTUAL_DRIVER_PATH"
    fi

    if [ -d "$CFG_PATH" ]; then
        echo "The $CFG_PATH directory already exists."
    else
        echo "The $CFG_PATH directory does not exist; creating..."
        mkdir -p "$CFG_PATH"
        chmod -R 775 "$CFG_PATH"
    fi
}

function stopOldWebInterface() {
    stopRaScsiWeb

    APACHE_STATUS=$(sudo systemctl status apache2 &> /dev/null; echo $?)
    if [ "$APACHE_STATUS" -eq 0 ] ; then
        echo "Stopping old Apache2 RaSCSI Web..."
        sudo systemctl disable apache2
        sudo systemctl stop apache2
    fi
}

function updateRaScsiGit() {
    cd "$BASE" || exit 1
    stashed=0
    if [[ $(git diff --stat) != '' ]]; then
        echo "There are local changes to the RaSCSI code; we will stash and reapply them."
        git -c user.name="${GIT_COMMITTER_NAME-rascsi}" -c user.email="${GIT_COMMITTER_EMAIL-rascsi@rascsi.com}" stash
        stashed=1
    fi

    if [[ `git for-each-ref --format='%(upstream:short)' "$(git symbolic-ref -q HEAD)"` != "" ]]; then
        echo "Updating checked out git branch $GIT_REMOTE/$GIT_BRANCH"
        git pull --ff-only
    else
        echo "Detected a local git working branch; skipping the remote update step."
    fi

    if [ $stashed -eq 1 ]; then
        echo "Reapplying local changes..."
        git stash apply
    fi
}

function stopRaScsi() {
    if [[ `systemctl list-units | grep -c rascsi.service` -ge 1 ]]; then
        sudo systemctl stop rascsi.service
    fi
}

function stopRaScsiWeb() {
    if [[ `systemctl list-units | grep -c rascsi-web.service` -ge 1 ]]; then
        sudo systemctl stop rascsi-web.service
    fi
}

function stopRaScsiScreen() {
    if [[ `systemctl list-units | grep -c monitor_rascsi.service` -ge 1 ]]; then
        sudo systemctl stop monitor_rascsi.service
    fi
}

function startRaScsiScreen() {
    if [[ -f "/etc/systemd/system/monitor_rascsi.service" ]]; then
        sudo systemctl start monitor_rascsi.service
	showRaScsiScreenStatus
    fi
}

function showRaScsiStatus() {
    sudo systemctl status rascsi | tee
}

function showRaScsiWebStatus() {
    sudo systemctl status rascsi-web | tee
}

function showRaScsiScreenStatus() {
    sudo systemctl status monitor_rascsi | tee
}

function createDrive600MB() {
    createDrive 600 "HD600"
}

function createDriveCustom() {
    driveSize=-1
    until [ $driveSize -ge "10" ] && [ $driveSize -le "4000" ]; do
        echo "What drive size would you like (in MB) (10-4000)"
        read driveSize

        echo "How would you like to name that drive?"
        read driveName
    done

    createDrive "$driveSize" "$driveName"
}

function formatDrive() {
    diskPath="$1"
    volumeName="$2"

    if [ ! -x $HFS_FORMAT ]; then
        # Install hfsutils to have hformat to format HFS
        sudo apt-get install hfsutils --assume-yes </dev/null
    fi

    if [ ! -x $HFDISK_BIN ]; then
        # Clone, compile and install 'hfdisk', partition tool
        git clone git://www.codesrc.com/git/hfdisk.git
        cd hfdisk || exit 1
        make

        sudo cp hfdisk /usr/bin/hfdisk
    fi

    # Inject hfdisk commands to create Drive with correct partitions
    # https://www.codesrc.com/mediawiki/index.php/HFSFromScratch
    # i                         initialize partition map
    # continue with default first block
    # C                         Create 1st partition with type specified next) 
    # continue with default
    # 32                        32 blocks (required for HFS+)
    # Driver_Partition          Partition Name
    # Apple_Driver              Partition Type  (available types: Apple_Driver, Apple_Driver43, Apple_Free, Apple_HFS...)
    # C                         Create 2nd partition with type specified next
    # continue with default first block
    # continue with default block size (rest of the disk)
    # ${volumeName}             Partition name provided by user
    # Apple_HFS                 Partition Type
    # w                         Write partition map to disk
    # y                         Confirm partition table
    # p                         Print partition map
    (echo i; echo ; echo C; echo ; echo 32; echo "Driver_Partition"; echo "Apple_Driver"; echo C; echo ; echo ; echo "${volumeName}"; echo "Apple_HFS"; echo w; echo y; echo p;) | $HFDISK_BIN "$diskPath"
    partitionOk=$?

    if [ $partitionOk -eq 0 ]; then
        if [ ! -f "$LIDO_DRIVER" ];then
            echo "Lido driver couldn't be found. Make sure RaSCSI is up-to-date with git pull"
            return 1
        fi

        # Burn Lido driver to the disk
        dd if="$LIDO_DRIVER" of="$diskPath" seek=64 count=32 bs=512 conv=notrunc

        driverInstalled=$?
        if [ $driverInstalled -eq 0 ]; then
            # Format the partition with HFS file system
            $HFS_FORMAT -l "${volumeName}" "$diskPath" 1
            hfsFormattedOk=$?
            if [ $hfsFormattedOk -eq 0 ]; then
                echo "Disk created with success."
            else
                echo "Unable to format HFS partition."
                return 4
            fi
        else
            echo "Unable to install Lido Driver."
            return 3
        fi
    else
        echo "Unable to create the partition."
        return 2
    fi
}

function createDrive() {
    if [ $# -ne 2 ]; then
        echo "To create a Drive, volume size and volume name must be provided"
        echo "$ createDrive 600 \"RaSCSI Drive\""
        echo "Drive wasn't created."
        return
    fi

    driveSize=$1
    driveName=$2
    mkdir -p "$VIRTUAL_DRIVER_PATH"
    drivePath="${VIRTUAL_DRIVER_PATH}/${driveSize}MB.hds"

    if [ ! -f "$drivePath" ]; then
        echo "Creating a ${driveSize}MB Drive"
        truncate --size "${driveSize}m" "$drivePath"

        echo "Formatting drive with HFS"
        formatDrive "$drivePath" "$driveName"

    else
        echo "Error: drive already exists"
    fi
}

function setupWiredNetworking() {
    echo "Setting up wired network..."

    LAN_INTERFACE=eth0

    echo "$LAN_INTERFACE will be configured for network forwarding with DHCP."
    echo ""
    echo "WARNING: If you continue, the IP address of your Pi may change upon reboot."
    echo "Please make sure you will not lose access to the Pi system."
    echo ""
    echo "Do you want to proceed with network configuration using the default settings? Y/n"
    read REPLY

    if [ "$REPLY" == "N" ] || [ "$REPLY" == "n" ]; then
        echo "Available wired interfaces on this system:"
	echo `ip -o addr show scope link | awk '{split($0, a); print $2}' | grep eth`
        echo "Please type the wired interface you want to use and press Enter:"
        read SELECTED
        LAN_INTERFACE=$SELECTED
    fi

    if [ "$(grep -c "^denyinterfaces" /etc/dhcpcd.conf)" -ge 1 ]; then
        echo "WARNING: Network forwarding may already have been configured. Proceeding will overwrite the configuration."
        echo "Press enter to continue or CTRL-C to exit"
        read REPLY
        sudo sed -i /^denyinterfaces/d /etc/dhcpcd.conf
    fi
    sudo bash -c 'echo "denyinterfaces '$LAN_INTERFACE'" >> /etc/dhcpcd.conf'
    echo "Modified /etc/dhcpcd.conf"

    # default config file is made for eth0, this will set the right net interface
    sudo bash -c 'sed s/eth0/'"$LAN_INTERFACE"'/g '"$BASE"'/src/raspberrypi/os_integration/rascsi_bridge > /etc/network/interfaces.d/rascsi_bridge'
    echo "Modified /etc/network/interfaces.d/rascsi_bridge"

    echo "Configuration completed!"
    echo "Please make sure you attach a DaynaPORT network adapter to your RaSCSI configuration."
    echo "Either use the Web UI, or do this on the command line (assuming SCSI ID 6):"
    echo "rasctl -i 6 -c attach -t scdp -f $LAN_INTERFACE"
    echo ""
    echo "We need to reboot your Pi"
    echo "Press Enter to reboot or CTRL-C to exit"
    read

    echo "Rebooting..."
    sleep 3
    sudo reboot
}

function setupWirelessNetworking() {
    NETWORK="10.10.20"
    IP=$NETWORK.2 # Macintosh or Device IP
    NETWORK_MASK="255.255.255.0"
    CIDR="24"
    ROUTER_IP=$NETWORK.1
    ROUTING_ADDRESS=$NETWORK.0/$CIDR
    WLAN_INTERFACE="wlan0"

    echo "$WLAN_INTERFACE will be configured for network forwarding with static IP assignment."
    echo "Configure your Macintosh or other device with the following:"
    echo "IP Address (static): $IP"
    echo "Router Address: $ROUTER_IP"
    echo "Subnet Mask: $NETWORK_MASK"
    echo "DNS Server: Any public DNS server"
    echo ""
    echo "Do you want to proceed with network configuration using the default settings? Y/n"
    read REPLY

    if [ "$REPLY" == "N" ] || [ "$REPLY" == "n" ]; then
        echo "Available wireless interfaces on this system:"
	echo `ip -o addr show scope link | awk '{split($0, a); print $2}' | grep wlan`
        echo "Please type the wireless interface you want to use and press Enter:"
        read -r WLAN_INTERFACE
        echo "Base IP address (ex. 10.10.20):"
        read -r NETWORK
        echo "CIDR for Subnet Mask (ex. '24' for 255.255.255.0):"
        read -r CIDR
        ROUTER_IP=$NETWORK.1
        ROUTING_ADDRESS=$NETWORK.0/$CIDR
    fi


    if [ "$(grep -c "^net.ipv4.ip_forward=1" /etc/sysctl.conf)" -ge 1 ]; then
        echo "WARNING: Network forwarding may already have been configured. Proceeding will overwrite the configuration."
        echo "Press enter to continue or CTRL-C to exit"
        read REPLY
    else
        sudo bash -c 'echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf'
	echo "Modified /etc/sysctl.conf"
    fi

    sudo iptables --flush
    sudo iptables -t nat -F
    sudo iptables -X
    sudo iptables -Z
    sudo iptables -P INPUT ACCEPT
    sudo iptables -P OUTPUT ACCEPT
    sudo iptables -P FORWARD ACCEPT
    sudo iptables -t nat -A POSTROUTING -o "$WLAN_INTERFACE" -s "$ROUTING_ADDRESS" -j MASQUERADE

    # Check if iptables-persistent is installed
    if [ `apt-cache policy iptables-persistent | grep Installed | grep -c "(none)"` -eq 0 ]; then
        echo "iptables-persistent is already installed"
        sudo iptables-save --file /etc/iptables/rules.v4
    else
        sudo apt-get install iptables-persistent --assume-yes </dev/null
    fi
    echo "Modified /etc/iptables/rules.v4"

    echo "Configuration completed!"
    echo ""
    echo "Please make sure you attach a DaynaPORT network adapter to your RaSCSI configuration"
    echo "Either use the Web UI, or do this on the command line (assuming SCSI ID 6):"
    echo "rasctl -i 6 -c attach -t scdp -f $WLAN_INTERFACE:$ROUTER_IP/$CIDR"
    echo ""
    echo "We need to reboot your Pi"
    echo "Press Enter to reboot or CTRL-C to exit"
    read REPLY

    echo "Rebooting..."
    sleep 3
    sudo reboot
}

function reserveScsiIds() {
    sudo systemctl stop rascsi
    echo "WARNING: This will override any existing modifications to rascsi.service!"
    echo "Please type the SCSI ID(s) that you want to reserve and press Enter:"
    echo "The input should be numbers between 0 and 7 separated by commas, e.g. \"0,1,7\" for IDs 0, 1, and 7."
    echo "Leave empty to make all IDs available."
    read -r RESERVED_IDS

    if [[ $RESERVED_IDS = "" ]]; then
        sudo sed -i /^ExecStart=/d /etc/systemd/system/rascsi.service
        sudo sed -i "8 i ExecStart=/usr/local/bin/rascsi" /etc/systemd/system/rascsi.service
    else
        sudo sed -i /^ExecStart=/d /etc/systemd/system/rascsi.service
        sudo sed -i "8 i ExecStart=/usr/local/bin/rascsi -r $RESERVED_IDS" /etc/systemd/system/rascsi.service
    fi

    echo "Modified /etc/systemd/system/rascsi.service"

    sudo systemctl daemon-reload
    sudo systemctl start rascsi
}

function installNetatalk() {
    NETATALK_VERSION="20200806"
    AFP_SHARE_PATH="$HOME/afpshare"

    echo "Cleaning up existing Netatalk installation, if it exists..."
    sudo /etc/init.d/netatalk stop || true
    sudo rm -rf /etc/default/netatalk.conf /etc/netatalk || true

    if [ -f "$HOME/netatalk-classic-$NETATALK_VERSION" ]; then
        echo "Deleting existing version of $HOME/netatalk-classic-$NETATALK_VERSION."
        sudo rm -rf "$HOME/netatalk-classic-$NETATALK_VERSION"
    fi

    echo "Downloading netatalk-classic-$NETATALK_VERSION to $HOME"
    cd $HOME || exit 1
    wget "https://github.com/christopherkobayashi/netatalk-classic/archive/refs/tags/$NETATALK_VERSION.tar.gz" </dev/null
    tar -xzvf $NETATALK_VERSION.tar.gz

    cd "netatalk-classic-$NETATALK_VERSION" || exit 1
    sed -i /^~/d ./config/AppleVolumes.default.tmpl
    echo "/home/pi/afpshare \"Pi File Server\" adouble:v1 volcharset:ASCII" >> ./config/AppleVolumes.default.tmpl

    echo "ATALKD_RUN=yes" >> ./config/netatalk.conf
    echo "\"RaSCSI-Pi\" -transall -uamlist uams_guest.so,uams_clrtxt.so,uams_dhx.so -defaultvol /etc/netatalk/AppleVolumes.default -systemvol /etc/netatalk/AppleVolumes.system -nosavepassword -nouservol -guestname \"nobody\" -setuplog \"default log_maxdebug /var/log/afpd.log\"" >> ./config/afpd.conf.tmpl

    ( sudo apt-get update && sudo apt-get install libssl-dev libdb-dev libcups2-dev autotools-dev automake libtool --assume-yes ) </dev/null

    echo "Compiling and installing Netatalk..."
    ./bootstrap
    ./configure --enable-debian --enable-cups --sysconfdir=/etc --with-uams-path=/usr/lib/netatalk
    ( make && sudo make install ) </dev/null

    if [ -d "$AFP_SHARE_PATH" ]; then
        echo "The $AFP_SHARE_PATH directory already exists."
    else
        echo "The $AFP_SHARE_PATH directory does not exist; creating..."
        mkdir -p "$AFP_SHARE_PATH"
        chmod -R 2775 "$AFP_SHARE_PATH"
    fi

    if [[ `grep -c netatalk /etc/rc.local` -eq 0 ]]; then
        sudo sed -i "/^exit 0/i sudo /etc/init.d/netatalk start" /etc/rc.local
        echo "Modified /etc/rc.local"
    fi

    sudo /etc/init.d/netatalk start

    if [[ `lsmod | grep -c appletalk` -eq 0 ]]; then
        echo ""
        echo "Your system may not have support for AppleTalk networking."
        echo "Use TCP to connect to your AppleShare server via the IP address of the network interface that is connected to the rest of your network:"
        echo `ip -4 addr show scope global | grep -oP '(?<=inet\s)\d+(\.\d+){3}'`
        echo "See wiki for information on how to compile support for AppleTalk into your Linux kernel."
    fi

    echo ""
    echo "Netatalk is now installed and configured to run on system boot."
    echo "To start or stop the File Server manually, do:"
    echo "sudo /etc/init.d/netatalk start"
    echo "sudo /etc/init.d/netatalk stop"
    echo ""
    echo "Make sure that the user running Netatalk has a password of 8 chars or less. You may execute the 'passwd' command to change the password of the current user."
    echo "For more information on configuring Netatalk and accessing AppleShare from your vintage Macs, see wiki:"
    echo "https://github.com/akuker/RASCSI/wiki/AFP-File-Sharing"
    echo ""
}

function notifyBackup {
    if $SYSTEMD_BACKUP; then
        echo ""
        echo "IMPORTANT: /etc/systemd/system/rascsi.service has been overwritten."
        echo "A backup copy was saved as rascsi.service.old in the same directory."
        echo "Please inspect the backup file and restore configurations that are important to your setup."
        echo ""
    fi
}

function runChoice() {
  case $1 in
          1)
              echo "Installing / Updating RaSCSI Service (${CONNECT_TYPE-FULLSPEC}) + Web interface"
              stopOldWebInterface
              updateRaScsiGit
              createImagesDir
              installPackages
              installRaScsi
              installRaScsiWebInterface
              showRaScsiStatus
              showRaScsiWebStatus
              notifyBackup
              echo "Installing / Updating RaSCSI Service (${CONNECT_TYPE-FULLSPEC}) + Web interface - Complete!"
          ;;
          2)
              echo "Installing / Updating RaSCSI Service (${CONNECT_TYPE-FULLSPEC})"
              updateRaScsiGit
              createImagesDir
              installPackages
              installRaScsi
              showRaScsiStatus
              notifyBackup
	          echo "Installing / Updating RaSCSI Service (${CONNECT_TYPE-FULLSPEC}) - Complete!"
          ;;
          3)
              echo "Installing / Updating RaSCSI OLED Screen"
              installRaScsiScreen
              showRaScsiScreenStatus
              echo "Installing / Updating RaSCSI OLED Screen - Complete!"
          ;;
          4)
              echo "Creating a 600MB drive"
              createDrive600MB
              echo "Creating a 600MB drive - Complete!"
          ;;
          5)
              echo "Creating a custom drive"
              createDriveCustom
              echo "Creating a custom drive - Complete!"
          ;;
          6)
              echo "Configuring wired network bridge"
              showMacNetworkWired
	      setupWiredNetworking
              echo "Configuring wired network bridge - Complete!"
          ;;
          7)
              echo "Configuring wifi network bridge"
	      showMacNetworkWireless
              setupWirelessNetworking
              echo "Configuring wifi network bridge - Complete!"
          ;;
          8)
              echo "Reserving SCSI IDs"
	      reserveScsiIds
              showRaScsiWebStatus
              echo "Reserving SCSI IDs - Complete!"
          ;;
          9)
              echo "Installing AppleShare File Server"
              installNetatalk
              echo "Installing AppleShare File Server - Complete!"
          ;;
          -h|--help|h|help)
              showMenu
          ;;
          *)
              echo "${1} is not a valid option, exiting..."
              exit 1
      esac
}

function readChoice() {
   choice=-1

   until [ $choice -ge "0" ] && [ $choice -le "9" ]; do
       echo -n "Enter your choice (0-9) or CTRL-C to exit: "
       read -r choice
   done

   runChoice "$choice"
}

function showMenu() {
    echo ""
    echo "Choose among the following options:"
    echo "INSTALL/UPDATE RASCSI (${CONNECT_TYPE-FULLSPEC} version)"
    echo "  1) install or update RaSCSI Service + Web Interface"
    echo "  2) install or update RaSCSI Service"
    echo "  3) install or update RaSCSI OLED Screen (requires hardware)"
    echo "CREATE HFS FORMATTED (MAC) IMAGE WITH LIDO DRIVERS"
    echo "** For the Mac Plus, it's better to create an image through the Web Interface **"
    echo "  4) 600MB drive (suggested size)"
    echo "  5) custom drive size (up to 4000MB)"
    echo "NETWORK ASSISTANT"
    echo "  6) configure network forwarding over Ethernet (DHCP)"
    echo "  7) configure network forwarding over WiFi (static IP)" 
    echo "MISCELLANEOUS"
    echo "  8) reserve SCSI IDs"
    echo "  9) install AppleShare File Server (Netatalk)"
}

# parse arguments
while [ "$1" != "" ]; do
    PARAM=$(echo "$1" | awk -F= '{print $1}')
    VALUE=$(echo "$1" | awk -F= '{print $2}')
    case $PARAM in
        -c | --connect_type)
            CONNECT_TYPE=$VALUE
            ;;
	-r | --run_choice)
	    RUN_CHOICE=$VALUE
	    ;;
        *)
            echo "ERROR: unknown parameter \"$PARAM\""
            exit 1
            ;;
    esac
    case $VALUE in
        FULLSPEC | STANDARD | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 )
            ;;
        *)
            echo "ERROR: unknown option \"$VALUE\""
	    exit 1
            ;;
    esac
    shift
done

showRaSCSILogo
initialChecks

if [ -z "${RUN_CHOICE}" ]; then # RUN_CHOICE is unset, show menu
    showMenu
    readChoice
else
    runChoice "$RUN_CHOICE"
fi