---
################################
# T-Pot - Abort if run as root #
################################

- name: T-Pot Abort if run as root
  hosts: all
  gather_facts: true
  become: false

  pre_tasks:
    - name: Check if running as root
      assert:
        that: ansible_user_id != 'root'
        fail_msg: "T-Pot playbook should not be run as root."
        success_msg: "Running as user: {{ ansible_user_id }}."
    - name: Check if supported distribution 
      assert:
        that: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]
        fail_msg: "T-Pot is not supported on this plattform: {{ ansible_distribution }}."
        success_msg: "T-Pot will now install on {{ ansible_distribution }}."

############################################################
# T-Pot - Install recommended, remove conflicting packages #
############################################################

- name: T-Pot - Install recommended, remove conflicting packages 
  hosts: all
  gather_facts: true
  become: true

  tasks:
    - name: Syncing clocks (All)
      shell: "hwclock --hctosys"
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

    - name: Install recommended packages (Debian, Ubuntu)
      package:
        name:
          - bash-completion
          - ca-certificates
          - curl 
          - git
          - gnupg
          - grc
          - neovim
          - net-tools
        state: latest
        update_cache: yes
      when: ansible_distribution in ["Debian", "Ubuntu"]

    - name: Install recommended packages (Fedora)
      package:
        name:
          - bash-completion
          - ca-certificates
          - curl
          - dnf-plugins-core
          - git
          - grc
          - neovim
          - net-tools
        state: latest 
        update_cache: yes
      when: ansible_distribution in ["Fedora"]

    - name: Remove conflicting packages (openSUSE Tumbleweed)
      package:
        name:
          - cups
          - net-tools
          - postfix
          - yast2-auth-client
          - yast2-auth-user
        state: absent 
        update_cache: yes
      when: ansible_distribution in ["openSUSE Tumbleweed"]

    - name: Install recommended packages (openSUSE Tumbleweed)
      package:
        name:
          - bash-completion
          - busybox-net-tools
          - ca-certificates
          - curl
          - git
          - grc
          - neovim
        state: latest
        update_cache: yes
      when: ansible_distribution in ["openSUSE Tumbleweed"]

#################################################
# T-Pot - Prepare for and install Docker Engine #
#################################################

- name: T-Pot - Prepare for and install Docker Engine
  hosts: all
  gather_facts: true
  become: true

  tasks:
    - name: Remove distribution based Docker packages (Debian, Fedora, Ubuntu)
      package:
        name:
          - docker
          - docker-engine
          - docker.io
          - containerd 
          - runc
        state: absent
        update_cache: yes
      when: ansible_distribution in ["Debian", "Fedora", "Ubuntu"]

    - name: Add folder for Docker Engine GPG key (Debian, Ubuntu)
      file:
        path: /etc/apt/keyrings
        state: directory
        mode: 0755
      when: ansible_distribution in ["Debian", "Ubuntu"]

    - name: Download Docker Engine GPG key (Debian, Ubuntu)
      get_url:
        url: https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg
        dest: /etc/apt/keyrings/docker
        mode: 0755
      when: ansible_distribution in ["Debian", "Ubuntu"]

    - name: Decrypt Docker Engine GPG key (Debian, Ubuntu)
      shell: gpg --dearmor /etc/apt/keyrings/docker
      args:
        creates: /etc/apt/keyrings/docker.gpg
      when: ansible_distribution in ["Debian", "Ubuntu"]

    - name: Add Docker Engine repository (Debian, Ubuntu)
      apt_repository:
        filename: docker
        repo: "deb [arch={{ ansible_architecture | replace('aarch64', 'arm64') }} signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} stable"
        state: present
        update_cache: yes
      when: ansible_distribution in ["Debian", "Ubuntu"]

    - name: Add Docker repository (Fedora)
      shell: |
        if [ "$(dnf repolist docker-ce-stable)" == "" ];
          then
            dnf -y config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repo
        fi
      when: ansible_distribution in ["Fedora"]

    - name: Install Docker Engine packages (openSUSE Tumbleweed)
      package:
        name:
          - docker
          - docker-compose 
        state: latest
        update_cache: yes
      when: ansible_distribution in ["openSUSE Tumbleweed"]

    - name: Install Docker Engine packages (Debian, Fedora, Ubuntu)
      package:
        name:
          - docker-ce 
          - docker-ce-cli 
          - containerd.io
          - docker-buildx-plugin
          - docker-compose-plugin 
        state: latest
        update_cache: yes
      notify: Restart Docker
      when: ansible_distribution in ["Debian", "Fedora", "Ubuntu"]

    - name: Enable Docker Engine upon boot (Debian, Fedora, openSUSE Tumbleweed, Ubuntu)
      service:
        name: docker
        state: started
        enabled: true 
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

  handlers:
    - name: Restart Docker
      service:
        name: docker
        state: restarted
        enabled: true
      when: ansible_distribution in ["Debian", "Fedora","openSUSE Tumbleweed", "Ubuntu"]

######################################################
# T-Pot - Adjust configs, add users and groups, etc. #
######################################################

- name: T-Pot - Adjust configs, add users and groups, etc.
  hosts: all
  gather_facts: true
  become: true

  tasks:
    - name: Create T-Pot group (All)
      group:
        name: tpot
        gid: 2000
        state: present
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

    - name: Create T-Pot user (All)
      user:
        name: tpot
        uid: 2000
        system: yes
        shell: /bin/false
        home: /nonexistent
        group: tpot
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

    - name: Disable ssh.socket unit (Ubuntu)
      systemd:
        name: ssh.socket
        state: stopped
        enabled: false
      when: ansible_distribution in ["Ubuntu"]

    - name: Remove ssh.socket.conf file (Ubuntu)
      file:
        path: /etc/systemd/system/ssh.service.d/00-socket.conf
        state: absent
      when: ansible_distribution in ["Ubuntu"]

    - name: Change SSH Port to 64295 (Debian, Fedora, Ubuntu)
      lineinfile:
        path: /etc/ssh/sshd_config
        line: "Port 64295"
        insertafter: EOF
      notify: Restart SSH
      when: ansible_distribution in ["Debian", "Fedora", "Ubuntu"]

    - name: Change SSH Port to 64295 (openSUSE Tumbleweed)
      lineinfile:
        path: /etc/ssh/sshd_config.d/port.conf
        line: "Port 64295"
        create: yes
      notify: Restart SSH
      when: ansible_distribution in ["openSUSE Tumbleweed"]

    - name: Add T-Pot SSH port to Firewall (Fedora, openSUSE Tumbleweed)
      firewalld:
        port: 64295/tcp
        permanent: yes
        state: enabled
      when: ansible_distribution in ["Fedora", "openSUSE Tumbleweed"]

    - name: Set T-Pot default target to ACCEPT (Fedora, openSUSE Tumbleweed)
      firewalld:
        zone: public
        target: ACCEPT
        permanent: yes
        state: enabled
      when: ansible_distribution in ["Fedora", "openSUSE Tumbleweed"]

    - name: Get Firewall rules (Fedora, openSUSE Tumbleweed)
      command: "firewall-cmd --list-all"
      register: firewall_output
      when: ansible_distribution in ["Fedora", "openSUSE Tumbleweed"]

    - name: Print Firewall rules (Fedora)
      debug:
        var: firewall_output.stdout_lines
      when: ansible_distribution in ["Fedora", "openSUSE Tumbleweed"]

    - name: Load kernel modules (Fedora)
      command: modprobe -v iptable_filter
      when: ansible_distribution in ["Fedora"]

    - name: Update iptables.conf (Fedora)
      lineinfile:
        path: /etc/modules-load.d/iptables.conf
        line: iptable_filter
        create: yes
      when: ansible_distribution in ["Fedora"]

    - name: Update SELinux config (Fedora)
      lineinfile:
        path: /etc/selinux/config
        regexp: '^SELINUX='
        line: 'SELINUX=permissive'
      when: ansible_distribution in ["Fedora"]

    - name: Modify DNSStubListener in resolved.conf (Fedora, Ubuntu)
      lineinfile:
        path: /etc/systemd/resolved.conf
        regexp: '^.*DNSStubListener=.*'
        line: 'DNSStubListener=no'
        state: present
      notify: Restart Resolved
      when: ansible_distribution in ["Fedora", "Ubuntu"]

  handlers:
    - name: Restart Resolved
      service:
        name: systemd-resolved
        state: restarted
      when: ansible_distribution in ["Fedora", "Ubuntu"]

    - name: Restart SSH
      service:
        name: "{{ 'sshd' if ansible_distribution == 'Debian|openSUSE Tumbleweed' else 'ssh' }}"
        state: restarted
        enabled: true
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

#######################################################################
# T-Pot - Adjust group users, bashrc, clone / update T-Pot repository #
#######################################################################

- name: T-Pot - Adjust group users, bashrc, clone / update T-Pot repository
  hosts: all
  gather_facts: true
  become: false

  tasks:
    - name: Add aliases (All)
      blockinfile:
        path: ~/.bashrc
        block: |
          alias dps='grc --colour=on docker ps -f status=running -f status=exited --format "table {{'{{'}}.Names{{'}}'}}\t{{'{{'}}.Status{{'}}'}}\t{{'{{'}}.Ports{{'}}'}}" | sort'
          alias dpsw='watch -c bash -ic dps'
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        insertafter: EOF
        state: present
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

    - name: Clone / Update T-Pot repository (All)
      git:
        repo: 'https://github.com/telekom-security/tpotce'
        dest: '/home/{{ ansible_user_id }}/tpotce/'
        version: dev
        clone: yes
        update: no
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

    - name: Add current user to Docker, T-Pot group (All)
      become: true
      user:
        name: "{{ ansible_user_id }}"
        groups: 
          - docker
          - tpot
        append: yes
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]

    - name: Refresh user session so docker commands will work
      command: newgrp docker

    - name: Check for non-root user id (All)
      debug:
        msg: "Detected user: '{{ ansible_user_id }}'"
      when: ansible_distribution in ["Debian", "Fedora", "openSUSE Tumbleweed", "Ubuntu"]
      failed_when: ansible_user_id == "root"