#!/bin/bash

###################################################
# Do not change any contents of this script!!
###################################################

# Some vars
myCONFIGFILE="/opt/tpot/etc/tpot.yml"
myCOMPOSEPATH="/opt/tpot/etc/compose"
myRED=""
myGREEN=""
myWHITE=""
myBLUE=""


# Check for existing tpot.yml
function fuCONFIGCHECK () {
  echo "### Checking for T-Pot configuration file ..."
  echo -n "###### $myBLUE$myCONFIGFILE$myWHITE "
  if ! [ -f $myCONFIGFILE ];
    then
      echo
      echo "[ $myRED""NOT OK""$myWHITE ] - No T-Pot configuration found."
      echo "Please create a link to your desired config i.e. 'ln -s /opt/tpot/etc/compose/standard.yml /opt/tpot/etc/tpot.yml'."
      echo
      exit 1
    else
      echo "[ $myGREEN""OK""$myWHITE ]"
  fi
}

# Let's test the internet connection
function fuCHECKINET () {
mySITES=$1
  echo "### Now checking availability of ..."
  for i in $mySITES;
    do
      echo -n "###### $myBLUE$i$myWHITE "
      curl --connect-timeout 5 -IsS $i 2>&1>/dev/null
        if [ $? -ne 0 ];
          then
	    echo
            echo "###### $myBLUE""Error - Internet connection test failed.""$myWHITE"" [ $myRED""NOT OK""$myWHITE ]"
            echo "Exiting.""$myWHITE"
            echo
            exit 1
          else
            echo "[ $myGREEN"OK"$myWHITE ]"
        fi
  done;
}

# Update
function fuSELFUPDATE () {
  echo "### Now checking for newer files in repository ..."
  git fetch --all
  myREMOTESTAT=$(git status | grep -c "up-to-date")
  if [ "$myREMOTESTAT" != "0" ];
    then
      echo "###### $myBLUE""No updates found in repository.""$myWHITE"
      return
  fi
  myRESULT=$(git diff --name-only origin/18.04 | grep update.sh)
  myLOCALSTAT=$(git status -uno | grep -c update.sh)
  if [ "$myRESULT" == "update.sh" ];
    then
      if [ "$myLOCALSTAT" == "0" ];
        then
          echo "###### $myBLUE""Found newer version, will update myself and restart.""$myWHITE"
          git reset --hard
          git pull --force
          exec "$1" "$2"
          exit 1
      fi
    else
      echo "###### $myBLUE""Update script is already up-to-date.""$myWHITE"
      git reset --hard
      git pull --force
  fi
}

# Let's check for version
function fuCHECK_VERSION () {
local myMINVERSION="18.04.0"
local myMASTERVERSION="18.10.0"
echo
echo "### Checking for version tag ..."
if [ -f "version" ];
  then
    myVERSION=$(cat version)
    if [[ "$myVERSION" > "$myMINVERSION" || "$myVERSION" == "$myMINVERSION" ]] && [[ "$myVERSION" < "$myMASTERVERSION" || "$myVERSION" == "$myMASTERVERSION" ]]
      then
        echo "###### $myBLUE$myVERSION is eligible for the update procedure.$myWHITE"" [ $myGREEN""OK""$myWHITE ]"
      else
        echo "###### $myBLUE $myVERSION cannot be upgraded automatically. Please run a fresh install.$myWHITE"" [ $myRED""NOT OK""$myWHITE ]"
	exit
    fi
  else
    echo "###### $myBLUE""Unable to determine version. Please run 'update.sh' from within '/opt/tpot'.""$myWHITE"" [ $myRED""NOT OK""$myWHITE ]"
    exit
  fi
}


# Stop T-Pot to avoid race conditions with running containers with regard to the current T-Pot config
function fuSTOP_TPOT () {
echo "### Need to stop T-Pot ..."
echo -n "###### $myBLUE Now stopping T-Pot.$myWHITE "
systemctl stop tpot
if [ $? -ne 0 ];
  then
    echo " [ $myRED""NOT OK""$myWHITE ]"
    echo "###### $myBLUE""Could not stop T-Pot.""$myWHITE"" [ $myRED""NOT OK""$myWHITE ]"
    echo "Exiting.""$myWHITE"
    echo
    exit 1
  else
    echo "[ $myGREEN"OK"$myWHITE ]"
fi
}

# Backup
function fuBACKUP () {
local myARCHIVE="/root/$(date +%Y%m%d%H%M)_tpot_backup.tgz"
local myPATH=$PWD
echo "### Create a backup, just in case ... "
echo -n "###### $myBLUE Building archive in $myARCHIVE $myWHITE"
cd /opt/tpot
tar cvfz $myARCHIVE * 2>&1>/dev/null
if [ $? -ne 0 ];
  then
    echo " [ $myRED""NOT OK""$myWHITE ]"
    echo "###### $myBLUE""Something went wrong.""$myWHITE"" [ $myRED""NOT OK""$myWHITE ]"
    echo "Exiting.""$myWHITE"
    echo
    cd $myPATH
    exit 1
  else
    echo "[ $myGREEN"OK"$myWHITE ]"
    cd $myPATH
fi
}

# Let's load docker images in parallel
function fuPULLIMAGES {
local myTPOTCOMPOSE="/opt/tpot/etc/tpot.yml"
for name in $(cat $myTPOTCOMPOSE | grep -v '#' | grep image | cut -d'"' -f2 | uniq)
  do
    docker pull $name &
  done
wait
}

function fuUPDATER () {
local myPACKAGES="apache2-utils apparmor apt-transport-https aufs-tools bash-completion build-essential ca-certificates cgroupfs-mount cockpit cockpit-docker curl dialog dnsutils docker.io docker-compose dstat ethtool fail2ban genisoimage git glances grc html2text htop ifupdown iptables iw jq libcrack2 libltdl7 lm-sensors man multitail net-tools npm ntp openssh-server openssl pass prips syslinux psmisc pv python-pip unattended-upgrades unzip vim wireless-tools wpasupplicant"
echo "### Now upgrading packages ..."
apt-get -y autoclean
apt-get -y autoremove
apt-get update
apt-get -y install $myPACKAGES
# Some updates require interactive attention, you can override that for unattended upgrades.
# Be warned, this can easily break your system.
# apt-get dist-upgrade -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" --force-yes
apt-get -y dist-upgrade
npm install "https://github.com/taskrabbit/elasticsearch-dump#9fcc8cc" -g
pip install --upgrade pip
hash -r
pip install --upgrade elasticsearch-curator yq
wget https://github.com/bcicen/ctop/releases/download/v0.7.1/ctop-0.7.1-linux-amd64 -O /usr/bin/ctop && chmod +x /usr/bin/ctop
echo

echo "### Now replacing T-Pot related config files on host"
cp host/etc/systemd/* /etc/systemd/system/
cp host/etc/issue /etc/
echo

echo "### Now pulling latest docker images"
fuPULLIMAGES
echo

echo "### If you made changes to tpot.yml please ensure to add them again."
echo "### We stored the previous version as backup in /root/."
echo "### Done, please reboot."
}


################
# Main section #
################

# Got root?
myWHOAMI=$(whoami)
if [ "$myWHOAMI" != "root" ]
  then
    echo "Need to run as root ..."
    sudo ./$0
    exit
fi

# Only run with command switch
if [ "$1" != "-y" ]; then
  echo "This script will update / upgrade all T-Pot related scripts, tools and packages"
  echo "Some of your changes might be overwritten, so make sure to save your work"
  echo "This is beta feature and only recommended for experienced users, run with '-y' switch"
  echo
  exit
fi

fuCHECK_VERSION
echo

fuCONFIGCHECK
echo

fuCHECKINET "https://index.docker.io https://github.com https://pypi.python.org https://ubuntu.com"
echo

fuSTOP_TPOT
echo

fuBACKUP
echo

fuSELFUPDATE "$0" "$@"
echo

fuUPDATER
echo