ansible-roles/minifirewall/tasks/config.yml

---

- debug:
    var: minifirewall_trusted_ips
    verbosity: 1
- debug:
    var: minifirewall_privilegied_ips
    verbosity: 1

- name: Stat minifirewall config file (before)
  stat:
    path: "{{ minifirewall_main_file }}"
  register: minifirewall_before

- name: Check if minifirewall is running
  shell: /sbin/iptables -L -n | grep -E "^(DROP\s+udp|ACCEPT\s+icmp)\s+--\s+0\.0\.0\.0\/0\s+0\.0\.0\.0\/0\s*$"
  changed_when: False
  failed_when: False
  check_mode: no
  register: minifirewall_is_running

- debug:
    var: minifirewall_is_running
    verbosity: 1

- name: Begin marker for IP addresses
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "# BEGIN ANSIBLE MANAGED BLOCK FOR IPS"
    insertbefore: '^# Main interface'
    create: no

- name: End marker for IP addresses
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    create: no
    line: "# END ANSIBLE MANAGED BLOCK FOR IPS"
    insertafter: '^PRIVILEGIEDIPS='

- fail:
    msg: You must provide at least 1 trusted IP
  when: minifirewall_trusted_ips == []
- debug:
    msg: "Warning: minifirewall_trusted_ips='0.0.0.0/0', the firewall is useless!"
  when: minifirewall_trusted_ips == ["0.0.0.0/0"]

- name: Configure IP addresses
  blockinfile:
    dest: "{{ minifirewall_main_file }}"
    marker: "# {mark} ANSIBLE MANAGED BLOCK FOR IPS"
    content: |
      # Main interface
      INT='{{ minifirewall_int }}'

      # IPv6
      IPV6='{{ minifirewall_ipv6 }}'

      # Trusted IPv4 local network
      # ...will be often IP/32 if you don't trust anything
      INTLAN='{{ minifirewall_intlan }}'

      # Trusted IPv4 addresses for private and semi-public services
      TRUSTEDIPS='{{ minifirewall_trusted_ips | join(' ') }}'

      # Privilegied IPv4 addresses for semi-public services
      # (no need to add again TRUSTEDIPS)
      PRIVILEGIEDIPS='{{ minifirewall_privilegied_ips | join(' ') }}'      
    create: no
  register: minifirewall_config_ips

- name: Begin marker for ports
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "# BEGIN ANSIBLE MANAGED BLOCK FOR PORTS"
    insertbefore: '^# Protected services'
    create: no

- name: End marker for ports
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "# END ANSIBLE MANAGED BLOCK FOR PORTS"
    insertafter: '^SERVICESUDP3='
    create: no

- name: Configure ports
  blockinfile:
    dest: "{{ minifirewall_main_file }}"
    marker: "# {mark} ANSIBLE MANAGED BLOCK FOR PORTS"
    content: |
      # Protected services
      # (add also in Public services if needed)
      SERVICESTCP1p='{{ minifirewall_protected_ports_tcp | join(' ') }}'
      SERVICESUDP1p='{{ minifirewall_protected_ports_udp | join(' ') }}'

      # Public services (IPv4/IPv6)
      SERVICESTCP1='{{ minifirewall_public_ports_tcp | join(' ') }}'
      SERVICESUDP1='{{ minifirewall_public_ports_udp | join(' ') }}'

      # Semi-public services (IPv4)
      SERVICESTCP2='{{ minifirewall_semipublic_ports_tcp | join(' ') }}'
      SERVICESUDP2='{{ minifirewall_semipublic_ports_udp | join(' ') }}'

      # Private services (IPv4)
      SERVICESTCP3='{{ minifirewall_private_ports_tcp | join(' ') }}'
      SERVICESUDP3='{{ minifirewall_private_ports_udp | join(' ') }}'      
    create: no
  register: minifirewall_config_ports

- name: Configure DNSSERVEURS
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "DNSSERVEURS='{{ minifirewall_dns_servers | join(' ') }}'"
    regexp: "DNSSERVEURS='.*'"
    create: no
  when: minifirewall_dns_servers is not none

- name: Configure HTTPSITES
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "HTTPSITES='{{ minifirewall_http_sites | join(' ') }}'"
    regexp: "HTTPSITES='.*'"
    create: no

- name: Configure HTTPSITES for debian
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "HTTPSITES='{{ minifirewall_default_debian_http_sites | join(' ') }}' '{{ minifirewall_http_sites | join(' ') }}'"
    regexp: "HTTPSITES='.*'"
    create: no
  when: ansible_distribution == "Debian"

- name: Configure HTTPSITES for ubuntu
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "HTTPSITES='{{ minifirewall_default_ubuntu_http_sites | join(' ') }}' '{{ minifirewall_http_sites | join(' ') }}'"
    regexp: "HTTPSITES='.*'"
    create: no
  when: ansible_distribution == "Ubuntu"

- name: Configure HTTPSSITES
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "HTTPSSITES='{{ minifirewall_https_sites | join(' ') }}'"
    regexp: "HTTPSSITES='.*'"
    create: no
  when: minifirewall_https_sites is not none

- name: Configure FTPSITES
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "FTPSITES='{{ minifirewall_ftp_sites | join(' ') }}'"
    regexp: "FTPSITES='.*'"
    create: no
  when: minifirewall_ftp_sites is not none

- name: Configure SSHOK
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "SSHOK='{{ minifirewall_ssh_ok | join(' ') }}'"
    regexp: "SSHOK='.*'"
    create: no
  when: minifirewall_ssh_ok is not none

- name: Configure SMTPOK
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "SMTPOK='{{ minifirewall_smtp_ok | join(' ') }}'"
    regexp: "SMTPOK='.*'"
    create: no
  when: minifirewall_smtp_ok is not none

- name: Configure SMTPSECUREOK
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "SMTPSECUREOK='{{ minifirewall_smtp_secure_ok | join(' ') }}'"
    regexp: "SMTPSECUREOK='.*'"
    create: no
  when: minifirewall_smtp_secure_ok is not none

- name: Configure NTPOK
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "NTPOK='{{ minifirewall_ntp_ok | join(' ') }}'"
    regexp: "NTPOK='.*'"
    create: no
  when: minifirewall_ntp_ok is not none

- name: evomaintenance
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    line: "/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s {{ item }} -m state --state ESTABLISHED,RELATED -j ACCEPT"
    insertafter: "^# EvoMaintenance"
  with_items: "{{ evomaintenance_hosts }}"

- name: remove minifirewall example rule for the evomaintenance
  lineinfile:
    dest: "{{ minifirewall_main_file }}"
    regexp: '^#.*(--sport 5432).*(-s X\.X\.X\.X)'
    state: absent
  when: evomaintenance_hosts != []

- name: Stat minifirewall config file (after)
  stat:
    path: "{{ minifirewall_main_file }}"
  register: minifirewall_after

- name: restart minifirewall
  # service:
  #   name: minifirewall
  #   state: restarted
  command: /etc/init.d/minifirewall restart
  register: minifirewall_init_restart
  failed_when: "'starting IPTables rules is now finish : OK' not in minifirewall_init_restart.stdout"
  changed_when: "'starting IPTables rules is now finish : OK' in minifirewall_init_restart.stdout"
  when:
    - minifirewall_restart_if_needed
    - minifirewall_is_running.rc == 0
    - minifirewall_before.stat.checksum != minifirewall_after.stat.checksum

- name: restart minifirewall (noop)
  meta: noop
  register: minifirewall_init_restart
  failed_when: False
  changed_when: False
  when: not minifirewall_restart_if_needed

- debug:
    var: minifirewall_init_restart
    verbosity: 2