piactl -- install, configure and control CNIL's PIA software

piactl

#!/bin/bash

ABOUT="piactl 0.10
Copyright (c) 2018-2020 Peeter P. Mõtsküla <peeterpaul@motskula.net>
https://gist.github.com/ppmotskula/4288167460de27d22225e4959c44c6c4
License: MIT License (https://opensource.org/licenses/MIT)

piactl helps you to install, configure and control CNIL's PIA software
(https://www.cnil.fr/en/open-source-pia-software-helps-carry-out-data-protection-impact-assesment)

Special thanks to github.com/ylachgar for his runbook and github.com/kosmas58 for his pia_docker

NOTE: piactl has been successfully tested on a fresh DigitalOcean droplet
      with 2 GB RAM and 1 VCPU running Ubuntu 18.04.2, and fresh VirtualBox VMs
      running Ubuntu 18.04.1 (server and desktop editions).
"

USAGE="Usage:
  piactl [status]
      Display running PIA software if any
  piactl start back|front|all
      Start PIA software (pia-back, pia, or both)
  piactl stop back|front|all
      Stop running PIA software
  piactl install back|front|all HOST [VERSION]
      Download and install PIA software (latest version unless a
      particular version number is given), and configure it to be
      accessed via specified hostname
  piactl reinstall back|front|all HOST [VERSION]
      Shortcut for 'piactl remove OPTIONS && piactl install OPTIONS'
  piactl secure back|front|all HOST
      Reconfigure installed PIA software to be served via https,
      obtaining letsencrypt (test) certificates unless already present
  piactl certify HOST
      Request non-test letsencrypt certificate for the given hostname.
      Note that letsencrypt certificates expire in 90 days. To renew
      them, run 'certbot renew' from time to time, or read certbot
      documentation for how to configure your system to auto-renew them
  piactl remove back|front|all
      Remove installed PIA software. If you want to also remove the
      dependencies and/or certificates, then you must do it manually
  piactl resetcap
      re-setcap /usr/bin/node to allow pia-front to run on :443
      (this may be needed when nodejs has been updated)
  piactl help|--help|-h
      Show this help message and exit

NOTE: you need root permissions to use piactl.
"

main() {
  case "$1" in
    ""|"status")         # piactl
      pia-status
      ;;

    "start")    # piactl start back|front|all
      if [ $# != 2 ] ; then
        usage "piactl start back|front|all"
      fi
      case "$2" in
        back)
          start-back
          ;;
        front)
          start-front
          ;;
        all)
          start-back
          start-front
          ;;
        *)
          usage "piactl start back|front|all";
      esac
      ;;

    "stop")     # piactl stop back|front|all
      if [ $# != 2 ] ; then usage ; fi
      case "$2" in
        back)
          stop-back
          ;;
        front)
          stop-front
          ;;
        all)
          stop-back
          stop-front
          ;;
        *)
          usage "piactl stop back|front|all";
      esac
      ;;

    "install")  # piactl install back|front|all HOST [VERSION]
      if [[ $# < 3 || $# > 4 ]] ; then
        usage "piactl install back|front|all HOST [VERSION]"
      fi
      install $2 $3 $4
      ;;

    "reinstall")  # piactl reinstall back|front|all HOST [VERSION]
      if [[ $# < 3 || $# > 4 ]] ; then
        usage "piactl reinstall back|front|all HOST [VERSION]"
      fi
      remove $2 && install $2 $3 $4
      ;;

    "secure")   # piactl secure back|front|all HOST
      if [ $# != 3 ] ; then
        usage "piactl secure back|front|all HOST"
      fi
      case "$2" in
        back)
          secure-back $3
          ;;
        front)
          secure-front $3
          ;;
        all)
          secure-back $3
          secure-front $3
          ;;
        *)
          usage "piactl secure back|front|all HOST";
      esac
      ;;

    "certify")  # piactl certify HOST
      if [ $# != 2 ] ; then
        usage "piactl certify HOST"
      fi
      certify $2 --prod
      ;;

    "remove")   # piactl remove back|front|all
      remove $2 $3 $4
      ;;

    "resetcap") # piactl resetcap
      resetcap
      ;;

    "help"|"--help"|"-h")     # piactl help
      echo "$ABOUT"
      echo "$USAGE"
      exit
      ;;

    *)          # piactl <unrecognized params>
      usage
      ;;
  esac
}


usage() {
  local MSG
  if [ $# != 0 ] ; then
    MSG="$@"
  else
    MSG="piactl [COMMAND] [OPTIONS]"
  fi
  echo "Usage:
  $MSG
Run 'piactl help' for details"
  exit 1
}


pid-front() {
  echo $(ps ax|grep -v grep|grep ' ng'|sed -e 's/\([0-9 ]*\).*/\1/'|sed -e 's/ //g')
}


pid-back() {
  echo $(ps ax|grep -v grep|grep '\[pia-back]'|sed -e 's/\([0-9 ]*\).*/\1/'|sed -e 's/ //g')
}


pia-status() {
  echo -n "PIA status: backend "
  if [ ! -e ~/pia-back ] ; then echo -n "not installed"
  else
    if [ "$(pid-back)" != "" ] ; then echo -n "running ($(pid-back))" ; else echo -n "stopped" ; fi
  fi
  echo -n ", frontend "
  if [ ! -e ~/pia ] ; then echo -n "not installed"
  else
    if [ "$(pid-front)" != "" ] ; then echo -n "running ($(pid-front))" ; else echo -n "stopped" ; fi
  fi
  echo
}


start-back() {
  if ( ! sudo -v ) ; then nosudo ; fi
  if [ ! -e ~/pia-back ] ; then
    echo "piactl: warning: backend not installed"
  elif [ "$(pid-back)" != "" ] ; then
    echo "piactl: warning: backend is already running ($(pid-back))"
  else
    cd ~/pia-back
    if [ -e ssl ] ; then
      sudo -Hu www-data bin/rails s -b "ssl://0.0.0.0?key=ssl/server.key&cert=ssl/server.crt" &
    else
      sudo -Hu www-data bin/rails s -b 0.0.0.0 &
    fi
  fi
}


start-front() {
  if ( ! sudo -v ) ; then nosudo ; fi
  if [ ! -e ~/pia ] ; then
    echo "piactl: warning: frontend not installed"
  elif [ "$(pid-front)" != "" ] ; then
    echo "piactl: warning: frontend is already running ($(pid-front))"
  else
    cd ~/pia
    sudo -Hu www-data npm run-script start &
  fi
}


stop-back() {
  if ( ! sudo -v ) ; then nosudo ; fi
  if [ ! -e ~/pia-back ] ; then
    echo "piactl: warning: backend not installed"
  elif [ "$(pid-back)" = "" ] ; then
    echo "piactl: warning: backend not running"
  else
    sudo -Hu www-data kill $(pid-back)
  fi
}


stop-front() {
  if ( ! sudo -v ) ; then nosudo ; fi
  if [ ! -e ~/pia ] ; then
    echo "piactl: warning: frontend not installed"
  elif [ "$(pid-front)" = "" ] ; then
    echo "piactl: warning: frontend not running"
  else
    sudo -Hu www-data kill $(pid-front)
  fi
}


nosudo() {
  echo "piactl: ERROR: you need root permissions but sudo failed"
  exit 1
}


install() {     # install back|front|all HOST [VERSION]
  if [[ $# < 2 || $# > 3 ]] ; then
    usage "piactl install back|front|all HOST [VERSION]"
  fi
  if ( ! sudo -v ) ; then nosudo ; fi
  case "$1" in
    back)
      install-back $2 $3
      ;;
    front)
      install-front $2 $3
      ;;
    all)
      install-back $2 $3
      install-front $2 $3
      ;;
    *)
      usage "piactl install back|front|all HOST [VERSION]";
  esac
}


install-back() {        # install-back HOST [VERSION]
  if [ -e ~/pia-back ] ; then
    echo "piactl: ERROR: ~/pia-back exists; remove or reinstall. Run 'piactl help' for details'"
    exit 1
  fi
  echo Installing pia-back into ~/pia-back...

  local HOST=$1
  local VERSION=$2

  # install dependencies
  sudo apt update && sudo apt install -y git ruby-dev sqlite3 build-essential zlib1g-dev postgresql libpq-dev libssl-dev
  sudo gem install rails

  # set postgres password
  local PGPASS
  read -p 'Enter new password for PostgreSQL user (role) "postgres": ' PGPASS
  sudo -u postgres psql -c "ALTER USER postgres WITH PASSWORD '$PGPASS';"
  # the following alternative would be more secure as it leaves no traces in user's history
  # echo '\password postgres' | sudo -u postgres psql postgres

  # download latest pia-back, checking out specific version if provided
  cd
  git clone https://github.com/LINCnil/pia-back.git
  cd pia-back
  if [ "$VERSION" != "" ] ; then
    git checkout $VERSION
  fi
  
  # remove Gemfile.lock and install latest bundler
  rm Gemfile.lock
  sudo gem install bundler
  # alternative: install specific version of bundler
  #sudo gem install bundler -v `grep -A 1 "BUNDLED WITH" Gemfile.lock|tail -1`

  # fix Gemfile to refer to Ruby 2.5.1
  # as 2.6.5 is not yet available in Ubuntu repos
  sed -i "s/^\(ruby '~> 2\).6.5'/\1.5.1'/" Gemfile

  # fix Gemfile to fix Chrome 70 SSL curve compatibility issue
  # ( https://github.com/puma/puma/issues/1670 )
  sed -i "s/^gem 'puma'.*/gem 'puma', github: 'eric-norcross\/puma', branch: 'chrome_70_ssl_curve_compatiblity'/" Gemfile
  
  # configure and build pia-back
  sed -e "s/username:/username: postgres/" -e "s/password:/password: $PGPASS/" config/database.example.yml > config/database.yml
  bundle install
  bundle install --deployment # needed to get the SSL fix in
  local SECRET=`bin/rake secret`
  sed -e "s/__SECRET_KEY_HERE__/$SECRET/" config/application.example.yml > config/application.yml

  # allow requests to $HOST
  cat >> config/application.rb << .
Rails.application.configure do
  config.hosts << "$HOST"
end
.

  # create and initialise database
  bin/rake db:create
  bin/rake db:migrate

  # make log and tmp writeable to www-data
  sudo chgrp -R www-data tmp log
  sudo chmod -R g+w tmp log

  # create uploads and data and make them writeable to www-data
  sudo mkdir uploads data
  sudo chgrp -R www-data uploads data
  sudo chmod -R g+w uploads data

  # final message
  echo "Done. pia-back should now be installed. Start it with 'piactl start back', then go to http://$HOST:3000"
}


install-front() {       # install-front HOST [VERSION]
  if [ -e ~/pia ] ; then
    echo "piactl: ERROR: ~/pia exists; remove or reinstall. Run 'piactl help' for details'"
    exit 1
  fi
  echo "Installing pia (frontend) into ~/pia..."

  local HOST=$1
  local VERSION=$2

  # enable universe repository if not enabled -- needed for installing nodejs
  if ! grep -q universe /etc/apt/sources.list ; then
    sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu bionic universe"
  fi

  # install dependencies
  curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
  sudo echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
  sudo apt update && sudo apt install -y nodejs npm yarn

  # download latest pia, checking out specific version if needed
  cd
  git clone https://github.com/LINCnil/pia.git
  cd pia
  if [ "$VERSION" != "" ] ; then
    git checkout $VERSION
  fi
  
  # configure pia
  yarn install
  cp src/environments/environment.prod.ts.example src/environments/environment.prod.ts
  sed -i -e "s/version: ''/version: '$VERSION'/g" src/environments/environment.prod.ts

  # if you want to BUILD pia for use with other webservers, use the following command
  # node_modules/@angular/cli/bin/ng build --prod --build-optimizer --sourcemaps

  # remove version number from package.json (might throw errors otherwise)
  sed -i -e 's/^ *"version": .*//' package.json

  # create npm startup script
  sed -i -e 's/"ng",/"node_modules\/@angular\/cli\/bin\/ng",/g' package.json
  sed -i -e 's/"ng serve",/"ng serve --host 0.0.0.0 --public-host '$HOST'",/g' package.json

  # final message
  echo "Done. pia should now be installed. Start it with 'piactl start front', then go to http://$HOST:4200"
}


remove() {      # remove back|front|all
  if [ $# != 1 ] ; then
    usage "piactl remove back|front|all"
  fi
  case "$1" in
    back)
      remove-back
      ;;
    front)
      remove-front
      ;;
    all)
      remove-back
      remove-front
      ;;
    *)
      usage "piactl remove back|front|all";
  esac
}


remove-back() {
  if ( ! sudo -v ) ; then nosudo ; fi
  if [ -e ~/pia-back ] ; then
    stop-back
    killall ruby # otherwise 'rake secret' will fail when reinstalling
    local SURE
    read -p "Removing ~/pia-back including any possible customizations. Continue (y/N)? " SURE
    case "$SURE" in
      y|Y)
        sudo rm -rf ~/pia-back
        echo "Removed ~/pia-back. You may remove database, dependencies and certificates manually."
        ;;
      *)
        exit 2
        ;;
    esac
  else
    echo "piactl: warning: ~/pia-back not found, nothing to remove"
  fi
}


remove-front() {
  if ( ! sudo -v ) ; then nosudo ; fi
  if [ -e ~/pia ] ; then
    stop-front
    local SURE
    read -p "Removing ~/pia including any possible customizations. Continue (y/N)? " SURE
    case "$SURE" in
      y|Y)
        sudo rm -rf ~/pia
        echo "Removed ~/pia. You may remove dependencies and certificates manually."
        ;;
      *)
        exit 2
        ;;
    esac
  else
    echo "piactl: warning: ~/pia not found, nothing to remove"
  fi
}


secure-back() {         # secure-back HOST
  if ( ! sudo -v ) ; then nosudo ; fi

  local HOST=$1

  if [ ! -e ~/pia-back ] ; then
    echo "piactl: warning: pia-back is not installed, skipping"
  elif [ -e ~/pia-back/ssl ] ; then
    echo "piactl: warning: pia-back is already secured, skipping"
  else
    certify $HOST
    mkdir ~/pia-back/ssl
    cd ~/pia-back/ssl
    ln -s /etc/letsencrypt/live/$HOST/fullchain.pem server.crt
    ln -s /etc/letsencrypt/live/$HOST/privkey.pem server.key

    ## reinstall puma to get ssl support
    #local PUMA=$(puma --version|sed -e "s/puma version //")
    #sudo gem uninstall puma
    #sudo gem install puma -v "$PUMA"

    echo "Done. Restart pia-back, then go to https://$HOST:3000"
  fi
}


secure-front() {        # secure-front HOST
  if ( ! sudo -v ) ; then nosudo ; fi

  local HOST=$1

  if [ ! -e ~/pia ] ; then
    echo "piactl: warning: pia is not installed, skipping"
  elif [ -e ~/pia/ssl ] ; then
    echo "piactl: warning: pia is already secured, skipping"
  else
    certify $HOST
    mkdir ~/pia/ssl
    cd ~/pia/ssl
    ln -s /etc/letsencrypt/live/$HOST/fullchain.pem server.crt
    ln -s /etc/letsencrypt/live/$HOST/privkey.pem server.key

    cd ~/pia
    sed -i -e "s/ng serve --host/ng serve --ssl --port 443 --ssl-cert=ssl\/server.crt --ssl-key=ssl\/server.key --host/" package.json
    sed -i -e "s/--public-host [^ \"]*/--public-host $HOST/" package.json
    sudo setcap 'cap_net_bind_service=+ep' /usr/bin/node

    echo "Done. Restart pia-front, then go to https://$HOST"
  fi
}


certify() {             # certify HOST [--prod]
  if ( ! sudo -v ) ; then nosudo ; fi

  local HOST=$1
  local PROD=$2
  local TYPE="--test-cert"
  if [ "$PROD" = "--prod" ] ; then TYPE="" ; fi

  if ! dpkg -l certbot >/dev/null 2>&1 ; then
    # install certbot if not already installed
    sudo apt install certbot
  fi

  if [[ (! -e /etc/letsencrypt/live/$HOST) || ("$PROD" = "--prod") ]] ; then
    # request new certs if not yet requested or requested for production
    sudo certbot $TYPE certonly --standalone -d $HOST
    sudo chmod 755 /etc/letsencrypt/live /etc/letsencrypt/archive
  fi
}


resetcap() {            # resetcap
  if ( ! sudo -v ) ; then nosudo ; fi

  sudo setcap 'cap_net_bind_service=+ep' /usr/bin/node
}


main "$@"

Thank you @ppmotskula , i made it by crossing your script and the PIA Doc !

Automation of piactl using crontab not working on ubuntu 20.04. I've created a script under my user, when I run it under ssh it works perfect but when I run under crontab under my user I get my output but the ip doesn't change.
Here is my ssh output:
Welcome to Ubuntu 20.04.1 LTS (GNU/Linux 5.4.0-54-generic x86_64)

• Documentation: https://help.ubuntu.com
• Management: https://landscape.canonical.com
• Support: https://ubuntu.com/advantage

1 update can be installed immediately.
0 of these updates are security updates.
To see these additional updates run: apt list --upgradable

Your Hardware Enablement Stack (HWE) is supported until April 2025.
Last login: Wed Nov 25 18:37:13 2020 from 192.168.2.27

----alias pia and pias point to enable and disable script pasted below------

----xxx is my ip address-----

J@T:$ pia wo 25 nov 2020 18:48:06 CET - old ip: xxx
wo 25 nov 2020 18:48:07 CET - getting new ip...
wo 25 nov 2020 18:48:14 CET - new ip: 89.187.174.197
done!
J@T:$ pias wo 25 nov 2020 18:48:25 CET - old ip: 89.187.174.197
wo 25 nov 2020 18:48:25 CET - quitting openvpn service...
wo 25 nov 2020 18:48:28 CET - new ip: xxx
done!

-----here is the script------

J@T:~$ cat /home/J/Headless/PIA.sh #!/bin/bash
echo $(date) - old ip: $(wget http://ipecho.net/plain -O - -q;echo)
sleep 1
echo $(date) - getting new ip...
piactl background enable
sleep 3
piactl connect
sleep 3
echo $(date) - new ip: $(wget http://ipecho.net/plain -O - -q;echo)
echo done!

Here is the cron output.

J@T:$ cat /home/J/Desktop/pia.txt wo 25 nov 2020 18:30:01 CET - old ip: xxx
wo 25 nov 2020 18:30:02 CET - getting new ip...
wo 25 nov 2020 18:30:08 CET - new ip: xxx
done!
wo 25 nov 2020 18:45:01 CET - old ip: xxx
wo 25 nov 2020 18:45:01 CET - quitting openvpn service...
wo 25 nov 2020 18:45:04 CET - new ip: xxx
done!
J@T:$

I've also tried to run using sudo crontab -e, same effect, unsuccessful.