---
- name: install selinux dependencies when selinux is installed on RHEL or Oracle Linux
  package:
    name: '{{ item }}'
    state: present
  with_items:
    - 'policycoreutils-python'
    - 'checkpolicy'
  when: ansible_os_family == 'RedHat' or ansible_os_family == 'Oracle Linux'

- name: install selinux dependencies when selinux is installed on Debian or Ubuntu
  apt:
    name: '{{ item }}'
    state: present
  with_items:
    - 'policycoreutils'
    - 'checkpolicy'
  when: ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu'

- name: check if ssh_password module is already installed
  shell: 'semodule -l | grep ssh_password'
  register: ssh_password_module
  failed_when: false
  changed_when: false
  check_mode: no

# The following tasks only get executed when selinux is in state enforcing, UsePam is 'no' and the ssh_password module is installed.
# See this issue for more info: https://github.com/hardening-io/ansible-ssh-hardening/issues/23
- block:
  - name: Create selinux custom policy drop folder
    file:
      path: '{{ ssh_custom_selinux_dir }}'
      state: 'directory'
      owner: 'root'
      group: 'root'
      mode: '0750'

  - name: Distributing custom selinux policies
    copy:
      src: 'ssh_password'
      dest: '{{ ssh_custom_selinux_dir }}'

  - name: check and compile policy
    shell: checkmodule -M -m -o {{ ssh_custom_selinux_dir }}/ssh_password.mod {{ ssh_custom_selinux_dir }}/ssh_password

  - name: create selinux policy module package
    shell: semodule_package -o {{ ssh_custom_selinux_dir }}/ssh_password.pp  -m {{ ssh_custom_selinux_dir }}/ssh_password.mod

  - name: install selinux policy
    shell: semodule -i {{ ssh_custom_selinux_dir }}/ssh_password.pp

  when: not ssh_use_pam and sestatus.stdout != 'Disabled' and ssh_password_module.stdout.find('ssh_password') != 0

# The following tasks only get executed when selinux is installed, UsePam is 'yes' and the ssh_password module is installed.
- name: remove selinux-policy when Pam is used, because Allowing sshd to read the shadow file directly is considered a potential security risk (http://danwalsh.livejournal.com/12333.html)
  command: semodule -r ssh_password
  when: ssh_use_pam and ssh_password_module.stdout.find('ssh_password') == 0