---
- name: Protect sysctl.conf
  ansible.builtin.file:
    path: /etc/sysctl.conf
    owner: root
    group: root
    mode: "0440"
    state: touch
    modification_time: preserve
    access_time: preserve

- name: Set Daemon umask, do config for rhel-family | NSA 2.2.4.1
  ansible.builtin.template:
    src: etc/sysconfig/rhel_sysconfig_init.j2
    dest: /etc/sysconfig/init
    owner: root
    group: root
    mode: "0544"
  when: ansible_facts.os_family == 'RedHat'

- name: Install initramfs-tools
  ansible.builtin.apt:
    name: initramfs-tools
    state: present
    update_cache: true
  when:
    - ansible_facts.os_family == 'Debian'
    - os_security_kernel_enable_module_loading

- name: Rebuild initramfs with starting pack of modules, if module loading at runtime is disabled
  ansible.builtin.template:
    src: etc/initramfs-tools/modules.j2
    dest: /etc/initramfs-tools/modules
    owner: root
    group: root
    mode: "0440"
  notify:
    - Update-initramfs
  when:
    - ansible_facts.os_family == 'Debian'
    - os_security_kernel_enable_module_loading
  register: initramfs

- name: Change sysctls
  when: ansible_virtualization_type not in ['docker', 'lxc', 'openvz']
  block:
    - name: Create a combined sysctl-dict if os-dependent sysctls are defined
      ansible.builtin.set_fact:
        sysctl_config: "{{ sysctl_config | combine(sysctl_custom_config) }}"
      when: sysctl_custom_config | default()

    # sysctl_rhel_config is kept for backwards-compatibility. use sysctl_custom_config instead
    - name: Create a combined sysctl-dict if os-dependent sysctls are defined
      ansible.builtin.set_fact:
        sysctl_config: "{{ sysctl_config | combine(sysctl_rhel_config) }}"
      when: sysctl_rhel_config | default()

    - name: Create a combined sysctl-dict if overwrites are defined
      ansible.builtin.set_fact:
        sysctl_config: "{{ sysctl_config | combine(sysctl_overwrite) }}"
      when: sysctl_overwrite | default()

    - name: Change various sysctl-settings, look at the sysctl-vars file for documentation
      ansible.posix.sysctl:
        name: "{{ item.key }}"
        value: "{{ item.value }}"
        sysctl_set: true
        state: present
        reload: true
        ignoreerrors: true
      with_dict: "{{ sysctl_config }}"
      when: item.key not in sysctl_unsupported_entries | default()

- name: Apply ufw defaults
  ansible.builtin.template:
    src: etc/default/ufw.j2
    dest: /etc/default/ufw
    mode: "0644"
  when:
    - ufw_manage_defaults
    - ansible_facts.os_family == 'Debian'
  tags: ufw