entrypoint.sh

#!/bin/bash +e

#check if container is running in host mode
if [[ -z `grep "docker0" /proc/net/dev` ]]; then
  echo "Container not running in host mode. Sure you configured host network mode? Container stopped."
  exit 143
fi

#check if container is running in privileged mode
ip link add dummy0 type dummy >/dev/null 2>&1
if [[ -z `grep "dummy0" /proc/net/dev` ]]; then
  echo "Container not running in privileged mode. Sure you configured privileged mode? Container stopped."
  exit 143
else
  # clean the dummy0 link
  ip link delete dummy0 >/dev/null 2>&1
fi

# check if dbus address is already defined -> then dbus-deamon of host shall be used
if [[ ! -S "/var/run/dbus/system_bus_socket" ]]; then
   # else start a dbus daemon instance in the container
   /etc/init.d/dbus start
   touch dbus_in_container_started
elif  [[ -e dbus_in_container_started ]]; then
   # start a dbus daemon instance in the container
   /etc/init.d/dbus start
fi

pidbt=0

# catch signals as PID 1 in a container
# SIGNAL-handler
term_handler() {

  echo "stopping bluetooth daemon ..."
  if [ $pidbt -ne 0 ]; then
        kill -SIGTERM "$pidbt"
        wait "$pidbt"
        echo "bring hci0 down ..."
        hciconfig hci0 down
  fi

  echo "terminating dbus ..."
  if [[ ! -S "/var/run/dbus/system_bus_socket" ]]; then
    /etc/init.d/dbus stop
  fi

  exit 143; # 128 + 15 -- SIGTERM
}

# on callback, stop all started processes in term_handler
trap 'kill ${!}; term_handler' SIGINT SIGKILL SIGTERM SIGQUIT SIGTSTP SIGSTOP SIGHUP

#check if we have a user V1 management running
httpUrl='https://127.0.0.1/getLandingPageStructure'
rep=$(curl -k -s $httpUrl)
if [[ $rep == *'model-name'* ]]; then
  sed -i -e 's+//adminAuth: {+adminAuth: require("./user-authentication_v1.js"),\n    //adminAuth: {+' /usr/lib/node_modules/node-red/settings.js
else
  sed -i -e 's+adminAuth: require("./user-authentication_v1.js"),\n    //adminAuth: {+//adminAuth: {+' /usr/lib/node_modules/node-red/settings.js
fi


#check if we have a user V2 management running
httpUrl='https://127.0.0.1/cockpit/login'
rep=$(curl -k -s $httpUrl -H 'cookie: cockpit=deleted')
if [[ $rep == *'Authentication failed'* ]]; then
  sed -i -e 's+//adminAuth: {+adminAuth: require("./user-authentication_v2.js"),\n    //adminAuth: {+' /usr/lib/node_modules/node-red/settings.js
else
  sed -i -e 's+adminAuth: require("./user-authentication_v2.js"),\n    //adminAuth: {+//adminAuth: {+' /usr/lib/node_modules/node-red/settings.js
fi


if [ ! -e container_first_start ]; then

  echo "Container is starting the first time"

  #copy the settings file to the correct location
  cp /usr/lib/node_modules/node-red/settings.js /root/settings/settings.js


  #generate keys and self-signed certificate

  mkdir -p /root/.node-red/certs
  openssl genrsa -out /root/.node-red/certs/node-key.pem 4096
  openssl req -new -sha256 -key /root/.node-red/certs/node-key.pem -out /root/.node-red/certs/node-csr.pem -subj "/C=DE/ST=Hessen/L=Hattersheim/O=Hilscher/OU=Hilscher/CN=$HOSTNAME/emailAddress=myown@hilscher.com"
  openssl x509 -req -days 365 -in /root/.node-red/certs/node-csr.pem -signkey /root/.node-red/certs/node-key.pem -out /root/.node-red/certs/node-cert.pem 

  #make hardware dependent nodes dynamically available

  #check 4DI4DO, NPIX-LEDs, USER-LEDs nodes support
  if [[ -e "/dev/gpiomem" ]]; then
    echo "Precondition for node-red-contrib-npix-io node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-contrib-npix-io /usr/lib/node_modules/node-red-contrib-npix-io
    echo "Precondition for node-red-contrib-user-leds node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-contrib-user-leds /usr/lib/node_modules/node-red-contrib-user-leds
    echo "Precondition for node-red-contrib-npix-leds node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-contrib-npix-leds /usr/lib/node_modules/node-red-contrib-npix-leds
    echo "Precondition for node-red-node-pi-gpio node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-node-pi-gpio /usr/lib/node_modules/node-red-node-pi-gpio
  fi

  #check FRAM, 4AI16U, CAN nodes support
  if [[ -e "/dev/i2c-1" ]]; then
    echo "Precondition for node-red-contrib-fram node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-contrib-fram /usr/lib/node_modules/node-red-contrib-fram 
#    echo "Precondition for node-red-contrib-npix-ai node(s) met. Installing node(s)." 
#    ln -s -f /usr/lib/node_modules_tmp/node-red-contrib-npix-ai /usr/lib/node_modules/node-red-contrib-npix-ai
    echo "Precondition for node-red-contrib-canbus node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-contrib-canbus /usr/lib/node_modules/node-red-contrib-canbus
  fi

  #check serial port node support
  if [[ -e "/dev/ttyS0" ]]; then
    echo "Precondition for node-red-node-serialport node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-node-serialport /usr/lib/node_modules/node-red-node-serialport 
  fi

  #check bluetooth node support
  if [[ -e "/dev/ttyAMA0" ]] && [[ -e "/dev/vcio" ]]; then
    echo "Precondition for node-red-contrib-generic-ble node(s) met. Installing node(s)." 
    ln -s -f /usr/lib/node_modules_tmp/node-red-contrib-generic-ble /usr/lib/node_modules/node-red-contrib-generic-ble
  fi

  #check fieldbus node support
  if [[ -e "/dev/spidev0.0" ]]; then
    if [ ! "$FIELD" = "none" ]; then
      echo "Precondition for node-red-fieldbus node(s) met. Installing node(s)."
      ln -s -f /usr/lib/node_modules_tmp/fieldbus /usr/lib/node_modules/fieldbus
    fi
  fi

  touch container_first_start

fi

# start bluetooth if support allows it
if [[ -e "/dev/ttyAMA0" ]] && [[ -e "/dev/vcio" ]]; then

    #reset BCM chip (making sure get access even after container restart)
    /opt/vc/bin/vcmailbox 0x38041 8 8 128 0 >/dev/null
    sleep 1
    /opt/vc/bin/vcmailbox 0x38041 8 8 128 1 >/dev/null
    sleep 1

    #load firmware to BCM chip and attach to hci0
    hciattach /dev/ttyAMA0 bcm43xx 115200 noflow

    #start bluetooth daemon
    /usr/libexec/bluetooth/bluetoothd -d &
    pidbt="$!"

    #create hci0 device
    hciconfig hci0 up

fi


#check if fieldbus node support is not desired
if [ ! "$FIELD" = "none" ]; then
  #check fieldbus node support
  if [[ -e "/dev/spidev0.0" ]]; then

    if [ "$FIELD" = "pns" ]
    then
      firmware="R160D000.nxf"
    elif [ "$FIELD" = "eis" ]
    then
      firmware="R160H000.nxf"
    else
      firmware="R160D000.nxf"
    fi

    #copy firmware to location where driver will load it from
    if [ ! -f /opt/cifx/deviceconfig/FW/channel0/*.nxf ]; then
      cp /root/.node-red/FWnetPI/$firmware /opt/cifx/deviceconfig/FW/channel0/$firmware
    fi

    # start Fieldbus Web configurator as background task
    cd /usr/lib/node_modules_tmp/WebConfigurator/ServerContent/
    node app.js > /dev/null 2>&1 &
  fi
fi

# start Node-RED as background task
/usr/bin/node-red --settings /root/settings/settings.js flows.json &

# wait forever not to exit the container
while true
do
  tail -f /dev/null & wait ${!}
done

exit 0