---
- name: ensure safe environment for exams
  hosts: localhost
  vars:
    - config_ufw: true
    - pruefungsuser: "pruefung"

# to verify ufw configuration run:
# sudo ufw status verbose
  roles:
    - role: libreoffice


  tasks:
    - name: Install ufw
      apt: package=ufw state=present

    - name: Configure ufw defaults
      ufw: direction={{ item.direction }} policy={{ item.policy }}
      with_items:
        - { direction: 'incoming', policy: 'deny' }
        - { direction: 'outgoing', policy: 'deny' }
      environment:
        PATH: /sbin:{{ ansible_env.PATH }}       

    # disable ipv6
    - lineinfile:
        path: /etc/default/ufw
        state: present
        regexp: '^IPV6'
        line: 'IPV6=no'

    - name: Enable ufw logging
      ufw: logging=off
      environment:
        PATH: /sbin:{{ ansible_env.PATH }} 
    - name: Commenting a line.
      replace:
        path: /etc/ufw/before.rules
        regexp: '(.*limit --limit*)'
        replace: '#\1'
      when: config_ufw
    - name: Allow all access to tcp port 123
      ufw:
        rule: allow
        port: '3142'
        direction: '{{ item }}'
      with_items:
        - in
        - out
      when: config_ufw
      environment:
        PATH: /sbin:{{ ansible_env.PATH }}    

    - name: Allow SSH-Access to some servers
      ufw:
        rule: allow
        direction: '{{ item.direction }}'
        dest: '{{ item.destination }}'
        port: '22'
      with_items:
        - { direction: 'in',  destination: '10.0.0.1/32' }
        - { direction: 'out', destination: '10.0.0.1/32' }
        - { direction: 'in',  destination: '10.0.2.254/32' }
        - { direction: 'out', destination: '10.0.2.243/32' }
        - { direction: 'in',  destination: '10.16.109.252/32' }
        - { direction: 'out', destination: '10.16.109.252/32' }
        - { direction: 'in',  destination: '10.16.1.1/32' }
        - { direction: 'out', destination: '10.16.1.1/32' }
        - { direction: 'in',  destination: '162.55.5.40/32' }
        - { direction: 'out', destination: '162.55.5.40/32' }
      when: config_ufw
      environment:
        PATH: /sbin:{{ ansible_env.PATH }}
    - name: Allow https-Access to some servers
      ufw:
        rule: allow
        direction: '{{ item.direction }}'
        dest: '{{ item.destination }}'
        port: '443'
      with_items:
        - { direction: 'in',  destination: '10.0.0.1/32' }
        - { direction: 'out', destination: '10.0.0.1/32' }
        - { direction: 'in',  destination: '10.0.2.254/32' }
        - { direction: 'out', destination: '10.0.2.243/32' }
        - { direction: 'in',  destination: '10.16.109.252/32' }
        - { direction: 'out', destination: '10.16.109.252/32' }
        - { direction: 'in',  destination: '10.16.1.1/32' }
        - { direction: 'out', destination: '10.16.1.1/32' }
        - { direction: 'in',  destination: '162.55.5.40/32' }
        - { direction: 'out', destination: '162.55.5.40/32' }
      when: config_ufw
      environment:
        PATH: /sbin:{{ ansible_env.PATH }}      
    - name: Allow apt-proxy-Access to some servers
      ufw:
        rule: allow
        direction: '{{ item.direction }}'
        dest: '{{ item.destination }}'
        port: '3142'
      with_items:
        - { direction: 'in',  destination: '10.0.2.254/32' }
        - { direction: 'out', destination: '10.0.2.243/32' }
        - { direction: 'in',  destination: '10.16.1.3/32' }
        - { direction: 'out', destination: '10.16.1.3/32' }
      environment:
        PATH: /sbin:{{ ansible_env.PATH }}    
    - name: Allow DNS-Access to some servers
      ufw:
        rule: allow
        direction: '{{ item.direction }}'
        dest: '{{ item.destination }}'
        port: '53'
      with_items:
        - { direction: 'in',  destination: '10.0.0.1/32' }
        - { direction: 'out', destination: '10.0.0.1/32' }
        - { direction: 'in',  destination: '10.16.1.1/32' }
        - { direction: 'out', destination: '10.16.1.1/32' }
      when: config_ufw
      environment:
        PATH: /sbin:{{ ansible_env.PATH }}
    - name: Allow dns
      ufw: rule={{ item.rule }} port={{ item.port }}
      with_items:
        - { rule: 'allow', port: '53'}
      when: config_ufw
      environment:
        PATH: /sbin:{{ ansible_env.PATH }}
    - name: disable mounting of usb flash drives
      file:
        path: /media
        owner: root
        mode: '700' 

    - name: create user group pruefung
      group:
        name: "pruefung"
        state: present

    - name: create user student
      ansible.builtin.user:
        name: "pruefung"
        password: "{{ 'morz' | password_hash('sha512') }}"
        shell: /bin/bash
        comment: Prüfungsbenutzer
        group: pruefung

    - name: create .config  dir for created user
      file:
        path: "/home/pruefung/.config/"
        state: directory
        mode: "700"
        owner: "pruefung"
        group: "pruefung"

    - name: Set timezone to Europe/Vienna
      timezone:
        name: Europe/Vienna


    - name: purge some prior installed packages
      apt: 
        name: 
          - task-kde-desktop
          - task-german-kde-desktop
          - task-german-desktop
          - xdg-desktop-portal-kde
          - xdg-desktop-portal-wlr
          - akonadi-backend-sqlite
          - thunderbird-l10n-de
          - webext-privacy-badger
          - webext-ublock-origin-firefox
          - webext-ublock-origin-chromium
          - vlc
          - gimp
          - inkscape
          - flameshot
          - bluefish
          - nmap
          - net-tools
          - ghex
          - thonny
          - spyder
          - mu-editor
          - dia
          - vym
          - tree
          - sqlite3
          - kicad
          - kicad-doc-de
          - akonadi-backend-mysql
          - akonadi-contacts-data
          - akonadi-mime-data
          - akonadi-server
          - akregator
          - aspell
          - aspell-de
          - dolphin
          - firebird3.0-common
          - gimp-data
          - gwenview
          - hyphen-en-us
          - ingerman
          - ispell
          - kate
          - kcalc
          - kmail
          - knotes
          - korganizer
          - wamerican
          - dragonplayer
          - juk
        autoremove: yes
        state: absent
    - name: intall some prior installed packages
      apt: 
        name: 
          - curl
        state: latest

    - name: Enable ufw
      ufw: state=enabled

    - name: start ufw service
      service: 
        name: ufw
        state: restarted